Add all 5 deployments solution for testing

Adds new target_elements parameter to CrawlerRunConfig that allows more flexible content selection than css_selector. This enables focusing markdown generation and data extraction on specific elements while still processing the entire page for links and media.

Key changes:
- Added target_elements list parameter to CrawlerRunConfig
- Modified WebScrapingStrategy and LXMLWebScrapingStrategy to handle target_elements
- Updated documentation with examples and comparison between css_selector and target_elements
- Fixed table extraction in content_scraping_strategy.py

BREAKING CHANGE: Table extraction logic has been modified to better handle thead/tbody structures

.github/DISCUSSION_TEMPLATE/feature-requests.yml

@@ -0,0 +1,59 @@
+title: "[Feature Request]: "
+labels: ["⚙️ New"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for your interest in suggesting a new feature! Before you submit, please take a moment to check if already exists in
+        this discussions category to avoid duplicates. 😊
+
+  - type: textarea
+    id: needs_to_be_done
+    attributes:
+      label: What needs to be done?
+      description: Please describe the feature or functionality you'd like to see.
+      placeholder: "e.g., Return alt text along with images scraped from a webpages in Result"
+    validations:
+      required: true
+
+  - type: textarea
+    id: problem_to_solve
+    attributes:
+      label: What problem does this solve?
+      description: Explain the pain point or issue this feature will help address.
+      placeholder: "e.g., Bypass Captchas added by cloudflare"
+    validations:
+      required: true
+
+  - type: textarea
+    id: target_users
+    attributes:
+      label: Target users/beneficiaries
+      description: Who would benefit from this feature? (e.g., specific teams, developers, users, etc.)
+      placeholder: "e.g., Marketing teams, developers"
+    validations:
+      required: false
+
+  - type: textarea
+    id: current_workarounds
+    attributes:
+      label: Current alternatives/workarounds
+      description: Are there any existing solutions or workarounds? How does this feature improve upon them?
+      placeholder: "e.g., Users manually select the css classes mapped to data fields to extract them"
+    validations:
+      required: false
+
+  - type: markdown
+    attributes:
+      value: |
+        ### 💡 Implementation Ideas
+
+  - type: textarea
+    id: proposed_approach
+    attributes:
+      label: Proposed approach
+      description: Share any ideas you have for how this feature could be implemented. Point out any challenges your foresee
+       and the success metrics for this feature
+      placeholder: "e.g., Implement a breadth first traversal algorithm for scraper"
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,127 @@
+name: Bug Report
+description: Report a bug with the Crawl4AI.
+title: "[Bug]: "
+labels: ["🐞 Bug","🩺 Needs Triage"]
+body:
+  - type: input
+    id: crawl4ai_version
+    attributes:
+      label: crawl4ai version
+      description: Specify the version of crawl4ai you are using.
+      placeholder: "e.g., 2.0.0"
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected_behavior
+    attributes:
+      label: Expected Behavior
+      description: Describe what you expected to happen.
+      placeholder: "Provide a detailed explanation of the expected outcome."
+    validations:
+      required: true
+
+  - type: textarea
+    id: current_behavior
+    attributes:
+      label: Current Behavior
+      description: Describe what is happening instead of the expected behavior.
+      placeholder: "Describe the actual result or issue you encountered."
+    validations:
+      required: true
+
+  - type: dropdown
+    id: reproducible
+    attributes:
+      label: Is this reproducible?
+      description: Indicate whether this bug can be reproduced consistently.
+      options:
+        - "Yes"
+        - "No"
+    validations:
+      required: true
+
+  - type: textarea
+    id: inputs
+    attributes:
+      label: Inputs Causing the Bug
+      description: Provide details about the inputs causing the issue.
+      placeholder: |
+        - URL(s): 
+        - Settings used: 
+        - Input data (if applicable): 
+      render: bash
+  
+  - type: textarea
+    id: steps_to_reproduce
+    attributes:
+      label: Steps to Reproduce
+      description: Provide step-by-step instructions to reproduce the issue.
+      placeholder: |
+        1. Go to...
+        2. Click on...
+        3. Observe the issue...
+      render: bash
+  
+  - type: textarea
+    id: code_snippets
+    attributes:
+      label: Code snippets
+      description: Provide code snippets(if any). Add comments as necessary
+      placeholder: print("Hello world")
+      render: python
+
+  # Header Section with Title
+  - type: markdown
+    attributes:
+      value: |
+          ## Supporting Information
+          Please provide the following details to help us understand and resolve your issue. This will assist us in reproducing and diagnosing the problem
+
+  - type: input
+    id: os
+    attributes:
+      label: OS
+      description: Please provide the operating system & distro where the issue occurs.
+      placeholder: "e.g., Windows, macOS, Linux"
+    validations:
+      required: true
+
+  - type: input
+    id: python_version
+    attributes:
+      label: Python version
+      description: Specify the Python version being used.
+      placeholder: "e.g., 3.8.5"
+    validations:
+      required: true
+
+  # Browser Field
+  - type: input
+    id: browser
+    attributes:
+      label: Browser
+      description: Provide the name of the browser you are using.
+      placeholder: "e.g., Chrome, Firefox, Safari"
+    validations:
+      required: false
+
+  # Browser Version Field
+  - type: input
+    id: browser_version
+    attributes:
+      label: Browser version
+      description: Provide the version of the browser you are using.
+      placeholder: "e.g., 91.0.4472.124"
+    validations:
+      required: false
+
+  # Error Logs Field (Text Area)
+  - type: textarea
+    id: error_logs
+    attributes:
+      label: Error logs & Screenshots (if applicable)
+      description: If you encountered any errors, please provide the error logs. Attach any relevant screenshots to help us understand the issue.
+      placeholder: "Paste error logs here and attach your screenshots"
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Feature Requests
+    url: https://github.com/unclecode/crawl4ai/discussions/categories/feature-requests
+    about: "Suggest new features or enhancements for Crawl4AI"
+  - name: Forums - Q&A
+    url: https://github.com/unclecode/crawl4ai/discussions/categories/forums-q-a
+    about: "Ask questions or engage in general discussions about Crawl4AI"

.github/pull_request_template.md

@@ -0,0 +1,19 @@
+## Summary
+Please include a summary of the change and/or which issues are fixed.
+
+eg: `Fixes #123` (Tag GitHub issue numbers in this format, so it automatically links the issues with your PR)
+
+## List of files changed and why
+eg: quickstart.py - To update the example as per new changes
+
+## How Has This Been Tested?
+Please describe the tests that you ran to verify your changes.
+
+## Checklist:
+
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] I have added/updated unit tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes

.gitignore

@@ -226,8 +226,32 @@ tree.md
 .local
 .do
 /plans
+plans/
+
+# Codeium
 .codeiumignore
 todo/
 
-# windsurf rules
-.windsurfrules
+# Continue development files
+.continue/
+.continuerc.json
+continue.lock
+continue_core.log
+contextProviders/
+continue_workspace/
+.continue-cache/
+continue_config.json
+
+# Continue temporary files
+.continue-temp/
+.continue-logs/
+.continue-downloads/
+
+# Continue VS Code specific
+.vscode-continue/
+.vscode-continue-cache/
+
+.prompts/
+
+.llm.env
+.private/

CHANGELOG.md

@@ -5,9 +5,137 @@ All notable changes to Crawl4AI will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-Okay, here's a detailed changelog in Markdown format, generated from the provided git diff and commit history. I've focused on user-facing changes, fixes, and features, and grouped them as requested:
+## Version 0.5.0 (2025-03-02)
 
-## Version 0.4.3 (2025-01-21)
+### Added
+
+- *(profiles)* Add BrowserProfiler class for dedicated browser profile management
+- *(cli)* Add interactive profile management to CLI with rich UI
+- *(profiles)* Add ability to crawl directly from profile management interface
+- *(browser)* Support identity-based browsing with persistent profiles
+- *(deep-crawling)* Add max_pages parameter to limit the number of pages crawled in all deep crawling strategies
+- *(deep-crawling)* Add score_threshold parameter to BFS and DFS strategies to filter URLs by score
+
+### Changed
+
+- *(browser)* Refactor profile management from ManagedBrowser to BrowserProfiler class
+- *(cli)* Enhance CLI with profile selection and status display for crawling
+- *(examples)* Update identity-based browsing example to use BrowserProfiler class
+- *(docs)* Update identity-based crawling documentation
+- *(docs)* Update deep crawling documentation with max_pages and score_threshold parameters
+- *(examples)* Add example demonstrating the use of max_pages and score_threshold parameters
+
+### Fixed
+
+- *(browser)* Fix profile detection and management on different platforms
+- *(cli)* Fix CLI command structure for better user experience
+- *(deep-crawling)* Improve BFS and DFS strategies to handle page count limits more efficiently
+
+
+## Version 0.5.0 (2025-02-21)
+
+### Added
+
+- *(crawler)* [**breaking**] Add memory-adaptive dispatcher with rate limiting
+- *(scraping)* [**breaking**] Add LXML-based scraping mode for improved performance
+- *(content-filter)* Add LLMContentFilter for intelligent markdown generation
+- *(dispatcher)* [**breaking**] Add streaming support for URL processing
+- *(browser)* [**breaking**] Improve browser context management and add shared data support
+- *(config)* [**breaking**] Add streaming support and config cloning
+- *(crawler)* Add URL redirection tracking
+- *(extraction)* Add LLM-powered schema generation utility
+- *(proxy)* Add proxy configuration support to CrawlerRunConfig
+- *(robots)* Add robots.txt compliance support
+- *(release)* [**breaking**] Prepare v0.4.3 beta release
+- *(proxy)* Add proxy rotation support and documentation
+- *(browser)* Add CDP URL configuration support
+- *(demo)* Uncomment feature demos and add fake-useragent dependency
+- *(pdf)* Add PDF processing capabilities
+- *(crawler)* [**breaking**] Enhance JavaScript execution and PDF processing
+- *(docker)* Add Docker deployment configuration and API server
+- *(docker)* Add Docker service integration and config serialization
+- *(docker)* [**breaking**] Enhance Docker deployment setup and configuration
+- *(api)* Improve cache handling and add API tests
+- *(crawler)* [**breaking**] Add deep crawling capabilities with BFS strategy
+- *(proxy)* [**breaking**] Add proxy rotation strategy
+- *(deep-crawling)* Add DFS strategy and update exports; refactor CLI entry point
+- *(cli)* Add command line interface with comprehensive features
+- *(config)* Enhance serialization and add deep crawling exports
+- *(crawler)* Add HTTP crawler strategy for lightweight web scraping
+- *(docker)* [**breaking**] Implement supervisor and secure API endpoints
+- *(docker)* [**breaking**] Add JWT authentication and improve server architecture
+
+### Changed
+
+- *(browser)* Update browser channel default to 'chromium' in BrowserConfig.from_args method
+- *(crawler)* Optimize response handling and default settings
+- *(crawler)* - Update hello_world example with proper content filtering
+- - Update hello_world.py example
+- *(docs)* [**breaking**] Reorganize documentation structure and update styles
+- *(dispatcher)* [**breaking**] Migrate to modular dispatcher system with enhanced monitoring
+- *(scraping)* [**breaking**] Replace ScrapingMode enum with strategy pattern
+- *(browser)* Improve browser path management
+- *(models)* Rename final_url to redirected_url for consistency
+- *(core)* [**breaking**] Improve type hints and remove unused file
+- *(docs)* Improve code formatting in features demo
+- *(user-agent)* Improve user agent generation system
+- *(core)* [**breaking**] Reorganize project structure and remove legacy code
+- *(docker)* Clean up import statements in server.py
+- *(docker)* Remove unused models and utilities for cleaner codebase
+- *(docker)* [**breaking**] Improve server architecture and configuration
+- *(deep-crawl)* [**breaking**] Reorganize deep crawling functionality into dedicated module
+- *(deep-crawling)* [**breaking**] Reorganize deep crawling strategies and add new implementations
+- *(crawling)* [**breaking**] Improve type hints and code cleanup
+- *(crawler)* [**breaking**] Improve HTML handling and cleanup codebase
+- *(crawler)* [**breaking**] Remove content filter functionality
+- *(examples)* Update API usage in features demo
+- *(config)* [**breaking**] Enhance serialization and config handling
+
+### Docs
+
+- Add Code of Conduct for the project (#410)
+
+### Documentation
+
+- *(extraction)* Add clarifying comments for CSS selector behavior
+- *(readme)* Update personal story and project vision
+- *(urls)* [**breaking**] Update documentation URLs to new domain
+- *(api)* Add streaming mode documentation and examples
+- *(readme)* Update version and feature announcements for v0.4.3b1
+- *(examples)* Update demo scripts and fix output formats
+- *(examples)* Update v0.4.3 features demo to v0.4.3b2
+- *(readme)* Update version references and fix links
+- *(multi-url)* [**breaking**] Improve documentation clarity and update examples
+- *(examples)* Update proxy rotation demo and disable other demos
+- *(api)* Improve formatting and readability of API documentation
+- *(examples)* Add SERP API project example
+- *(urls)* Update documentation URLs to new domain
+- *(readme)* Resolve merge conflict and update version info
+
+### Fixed
+
+- *(browser)* Update default browser channel to chromium and simplify channel selection logic
+- *(browser)* [**breaking**] Default to Chromium channel for new headless mode (#387)
+- *(browser)* Resolve merge conflicts in browser channel configuration
+- Prevent memory leaks by ensuring proper closure of Playwright pages
+- Not working long page screenshot (#403)
+- *(extraction)* JsonCss selector and crawler improvements
+- *(models)* [**breaking**] Make model fields optional with default values
+- *(dispatcher)* Adjust memory threshold and fix dispatcher initialization
+- *(install)* Ensure proper exit after running doctor command
+
+### Miscellaneous Tasks
+
+- *(cleanup)* Remove unused files and improve type hints
+- Add .gitattributes file
+
+## License Update
+
+Crawl4AI v0.5.0 updates the license to Apache 2.0 *with a required attribution clause*.  This means you are free to use, modify, and distribute Crawl4AI (even commercially), but you *must* clearly attribute the project in any public use or distribution.  See the updated `LICENSE` file for the full legal text and specific requirements.
+
+---
+
+## Version 0.4.3b2 (2025-01-21)
 
 This release introduces several powerful new features, including robots.txt compliance, dynamic proxy support, LLM-powered schema generation, and improved documentation.
 
@@ -135,9 +263,11 @@ This release introduces several powerful new features, including robots.txt comp
 - **Multiple Element Selection**: Modified `_get_elements` in `JsonCssExtractionStrategy` to return all matching elements instead of just the first one, ensuring comprehensive extraction. ([#extraction_strategy.py](crawl4ai/extraction_strategy.py))
 - **Error Handling in Scrolling**: Added robust error handling to ensure scrolling proceeds safely even if a configuration is missing. ([#async_crawler_strategy.py](crawl4ai/async_crawler_strategy.py))
 
-#### Other
-- **Git Ignore Update**: Added `/plans` to `.gitignore` for better development environment consistency. ([#.gitignore](.gitignore))
+## [0.4.267] - 2025 - 01 - 06
 
+### Added
+- **Windows Event Loop Configuration**: Introduced a utility function `configure_windows_event_loop` to resolve `NotImplementedError` for asyncio subprocesses on Windows. ([#utils.py](crawl4ai/utils.py), [#tutorials/async-webcrawler-basics.md](docs/md_v3/tutorials/async-webcrawler-basics.md))
+- **`page_need_scroll` Method**: Added a method to determine if a page requires scrolling before taking actions in `AsyncPlaywrightCrawlerStrategy`. ([#async_crawler_strategy.py](crawl4ai/async_crawler_strategy.py))
 
 ## [0.4.24] - 2024-12-31
 
@@ -281,12 +411,6 @@ This release introduces several powerful new features, including robots.txt comp
 - Fixed potential viewport mismatches by ensuring consistent use of `self.viewport_width` and `self.viewport_height` throughout the code.
 - Improved robustness of dynamic content loading to avoid timeouts and failed evaluations.
 
-
-
-
-
-
-
 ## [0.3.75] December 1, 2024
 
 ### PruningContentFilter

CODE_OF_CONDUCT.md

@@ -0,0 +1,131 @@
+# Crawl4AI Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, caste, color, religion, or sexual
+identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the overall
+  community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or advances of
+  any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email address,
+  without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official email address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+unclecode@crawl4ai.com. All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the
+community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
+[https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations

CONTRIBUTORS.md

@@ -24,6 +24,14 @@ We would like to thank the following people for their contributions to Crawl4AI:
 - [NanmiCoder](https://github.com/NanmiCoder) - fix: crawler strategy exception handling and fixes [#271](https://github.com/unclecode/crawl4ai/pull/271)
 - [paulokuong](https://github.com/paulokuong) - fix: RAWL4_AI_BASE_DIRECTORY should be Path object instead of string [#298](https://github.com/unclecode/crawl4ai/pull/298)
 
+#### Feb-Alpha-1
+- [sufianuddin](https://github.com/sufianuddin) - fix: [Documentation for JsonCssExtractionStrategy](https://github.com/unclecode/crawl4ai/issues/651)
+- [tautikAg](https://github.com/tautikAg) - fix: [Markdown output has incorect spacing](https://github.com/unclecode/crawl4ai/issues/599)
+- [cardit1](https://github.com/cardit1) - fix: ['AsyncPlaywrightCrawlerStrategy' object has no attribute 'downloads_path'](https://github.com/unclecode/crawl4ai/issues/585)
+- [dmurat](https://github.com/dmurat) - fix: [ Incorrect rendering of inline code inside of links ](https://github.com/unclecode/crawl4ai/issues/583)
+- [Sparshsing](https://github.com/Sparshsing) - fix: [Relative Urls in the webpage not extracted properly ](https://github.com/unclecode/crawl4ai/issues/570)
+
+
 
 ## Other Contributors
 
@@ -31,6 +39,11 @@ We would like to thank the following people for their contributions to Crawl4AI:
 - [Shiv Kumar](https://github.com/shivkumar0757)
 - [QIN2DIM](https://github.com/QIN2DIM)
 
+#### Typo fixes
+- [ssoydan](https://github.com/ssoydan)
+- [Darshan](https://github.com/Darshan2104)
+- [tuhinmallick](https://github.com/tuhinmallick)
+
 ## Acknowledgements
 
 We also want to thank all the users who have reported bugs, suggested features, or helped in any other way to make Crawl4AI better.

Dockerfile

@@ -1,32 +1,31 @@
-# syntax=docker/dockerfile:1.4
+FROM python:3.10-slim
 
-ARG TARGETPLATFORM
-ARG BUILDPLATFORM
+# Set build arguments
+ARG APP_HOME=/app
+ARG GITHUB_REPO=https://github.com/unclecode/crawl4ai.git
+ARG GITHUB_BRANCH=main
+ARG USE_LOCAL=true
 
-# Other build arguments
-ARG PYTHON_VERSION=3.10
-
-# Base stage with system dependencies
-FROM python:${PYTHON_VERSION}-slim as base
-
-# Declare ARG variables again within the build stage
-ARG INSTALL_TYPE=all
-ARG ENABLE_GPU=false
-
-# Platform-specific labels
-LABEL maintainer="unclecode"
-LABEL description="🔥🕷️ Crawl4AI: Open-source LLM Friendly Web Crawler & scraper"
-LABEL version="1.0"
-
-# Environment setup
-ENV PYTHONUNBUFFERED=1 \
-    PYTHONDONTWRITEBYTECODE=1 \
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONHASHSEED=random \
+    PYTHONUNBUFFERED=1 \
     PIP_NO_CACHE_DIR=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
     PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_DEFAULT_TIMEOUT=100 \
-    DEBIAN_FRONTEND=noninteractive
+    DEBIAN_FRONTEND=noninteractive \
+    REDIS_HOST=localhost \
+    REDIS_PORT=6379
+
+ARG PYTHON_VERSION=3.10
+ARG INSTALL_TYPE=default
+ARG ENABLE_GPU=false
+ARG TARGETARCH
+
+LABEL maintainer="unclecode"
+LABEL description="🔥🕷️ Crawl4AI: Open-source LLM Friendly Web Crawler & scraper"
+LABEL version="1.0"    
 
-# Install system dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     curl \
@@ -37,10 +36,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     pkg-config \
     python3-dev \
     libjpeg-dev \
-    libpng-dev \
+    redis-server \
+    supervisor \
     && rm -rf /var/lib/apt/lists/*
 
-# Playwright system dependencies for Linux
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libglib2.0-0 \
     libnss3 \
@@ -65,8 +64,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libatspi2.0-0 \
     && rm -rf /var/lib/apt/lists/*
 
-# GPU support if enabled and architecture is supported
-RUN if [ "$ENABLE_GPU" = "true" ] && [ "$TARGETPLATFORM" = "linux/amd64" ] ; then \
+RUN if [ "$ENABLE_GPU" = "true" ] && [ "$TARGETARCH" = "amd64" ] ; then \
     apt-get update && apt-get install -y --no-install-recommends \
     nvidia-cuda-toolkit \
     && rm -rf /var/lib/apt/lists/* ; \
@@ -74,19 +72,42 @@ else \
     echo "Skipping NVIDIA CUDA Toolkit installation (unsupported platform or GPU disabled)"; \
 fi
 
-# Create and set working directory
-WORKDIR /app
+RUN if [ "$TARGETARCH" = "arm64" ]; then \
+    echo "🦾 Installing ARM-specific optimizations"; \
+    apt-get update && apt-get install -y --no-install-recommends \
+    libopenblas-dev \
+    && rm -rf /var/lib/apt/lists/*; \
+elif [ "$TARGETARCH" = "amd64" ]; then \
+    echo "🖥️ Installing AMD64-specific optimizations"; \
+    apt-get update && apt-get install -y --no-install-recommends \
+    libomp-dev \
+    && rm -rf /var/lib/apt/lists/*; \
+else \
+    echo "Skipping platform-specific optimizations (unsupported platform)"; \
+fi
 
-# Copy the entire project
-COPY . .
+WORKDIR ${APP_HOME}
 
-# Install base requirements
+RUN echo '#!/bin/bash\n\
+if [ "$USE_LOCAL" = "true" ]; then\n\
+    echo "📦 Installing from local source..."\n\
+    pip install --no-cache-dir /tmp/project/\n\
+else\n\
+    echo "🌐 Installing from GitHub..."\n\
+    for i in {1..3}; do \n\
+        git clone --branch ${GITHUB_BRANCH} ${GITHUB_REPO} /tmp/crawl4ai && break || \n\
+        { echo "Attempt $i/3 failed! Taking a short break... ☕"; sleep 5; }; \n\
+    done\n\
+    pip install --no-cache-dir /tmp/crawl4ai\n\
+fi' > /tmp/install.sh && chmod +x /tmp/install.sh
+
+COPY . /tmp/project/
+
+COPY deploy/docker/supervisord.conf .
+
+COPY deploy/docker/requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Install required library for FastAPI
-RUN pip install fastapi uvicorn psutil
-
-# Install ML dependencies first for better layer caching
 RUN if [ "$INSTALL_TYPE" = "all" ] ; then \
         pip install --no-cache-dir \
             torch \
@@ -99,38 +120,37 @@ RUN if [ "$INSTALL_TYPE" = "all" ] ; then \
         python -m nltk.downloader punkt stopwords ; \
     fi
 
-# Install the package
 RUN if [ "$INSTALL_TYPE" = "all" ] ; then \
-        pip install ".[all]" && \
+        pip install "/tmp/project/[all]" && \
         python -m crawl4ai.model_loader ; \
     elif [ "$INSTALL_TYPE" = "torch" ] ; then \
-        pip install ".[torch]" ; \
+        pip install "/tmp/project/[torch]" ; \
     elif [ "$INSTALL_TYPE" = "transformer" ] ; then \
-        pip install ".[transformer]" && \
+        pip install "/tmp/project/[transformer]" && \
         python -m crawl4ai.model_loader ; \
     else \
-        pip install "." ; \
+        pip install "/tmp/project" ; \
     fi
+    
+RUN pip install --no-cache-dir --upgrade pip && \
+    /tmp/install.sh && \
+    python -c "import crawl4ai; print('✅ crawl4ai is ready to rock!')" && \
+    python -c "from playwright.sync_api import sync_playwright; print('✅ Playwright is feeling dramatic!')"
+    
+RUN playwright install --with-deps chromium
 
-    # Install MkDocs and required plugins
-RUN pip install --no-cache-dir \
-    mkdocs \
-    mkdocs-material \
-    mkdocs-terminal \
-    pymdown-extensions
+COPY deploy/docker/* ${APP_HOME}/
 
-# Build MkDocs documentation
-RUN mkdocs build
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD bash -c '\
+    MEM=$(free -m | awk "/^Mem:/{print \$2}"); \
+    if [ $MEM -lt 2048 ]; then \
+        echo "⚠️ Warning: Less than 2GB RAM available! Your container might need a memory boost! 🚀"; \
+        exit 1; \
+    fi && \
+    redis-cli ping > /dev/null && \
+    curl -f http://localhost:8000/health || exit 1'
 
-# Install Playwright and browsers
-RUN if [ "$TARGETPLATFORM" = "linux/amd64" ]; then \
-    playwright install chromium; \
-    elif [ "$TARGETPLATFORM" = "linux/arm64" ]; then \
-    playwright install chromium; \
-    fi
-
-# Expose port
-EXPOSE 8000 11235 9222 8080
-
-# Start the FastAPI server
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "11235"]
+EXPOSE 6379
+CMD ["supervisord", "-c", "supervisord.conf"]
+    

LICENSE

@@ -48,4 +48,22 @@ You may add Your own copyright statement to Your modifications and may provide a
 
 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
 
-END OF TERMS AND CONDITIONS
+END OF TERMS AND CONDITIONS
+
+---
+Attribution Requirement
+
+All distributions, publications, or public uses of this software, or derivative works based on this software, must include the following attribution:
+
+"This product includes software developed by UncleCode (https://x.com/unclecode) as part of the Crawl4AI project (https://github.com/unclecode/crawl4ai)."
+
+This attribution must be displayed in a prominent and easily accessible location, such as:
+
+-   For software distributions: In a NOTICE file, README file, or equivalent documentation.
+-   For publications (research papers, articles, blog posts): In the acknowledgments section or a footnote.
+-   For websites/web applications: In an "About" or "Credits" section.
+-   For command-line tools: In the help/usage output.
+
+This requirement ensures proper credit is given for the use of Crawl4AI and helps promote the project.
+
+---

README.md

@@ -15,14 +15,15 @@
 [![License](https://img.shields.io/github/license/unclecode/crawl4ai)](https://github.com/unclecode/crawl4ai/blob/main/LICENSE)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![Security: bandit](https://img.shields.io/badge/security-bandit-yellow.svg)](https://github.com/PyCQA/bandit)
+[![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-2.1-4baaaa.svg)](code_of_conduct.md)
 
 </div>
 
 Crawl4AI is the #1 trending GitHub repository, actively maintained by a vibrant community. It delivers blazing-fast, AI-ready web crawling tailored for LLMs, AI agents, and data pipelines. Open source, flexible, and built for real-time performance, Crawl4AI empowers developers with unmatched speed, precision, and deployment ease.  
 
-[✨ Check out latest update v0.4.3bx](#-recent-updates)
+[✨ Check out latest update v0.5.0](#-recent-updates)
 
-🎉 **Version 0.4.3bx is out!** This release brings exciting new features like a Memory Dispatcher System, Streaming Support, LLM-Powered Markdown Generation, Schema Generation, and Robots.txt Compliance! [Read the release notes →](https://docs.crawl4ai.com/blog)
+🎉 **Version 0.5.0 is out!** This major release introduces Deep Crawling with BFS/DFS/BestFirst strategies, Memory-Adaptive Dispatcher, Multiple Crawling Strategies (Playwright and HTTP), Docker Deployment with FastAPI, Command-Line Interface (CLI), and more! [Read the release notes →](https://docs.crawl4ai.com/blog)
 
 <details>
 <summary>🤓 <strong>My Personal Story</strong></summary>
@@ -67,7 +68,7 @@ If you encounter any browser-related issues, you can install them manually:
 python -m playwright install --with-deps chromium
 ```
 
-2. Run a simple web crawl:
+2. Run a simple web crawl with Python:
 ```python
 import asyncio
 from crawl4ai import *
@@ -83,6 +84,18 @@ if __name__ == "__main__":
     asyncio.run(main())
 ```
 
+3. Or use the new command-line interface:
+```bash
+# Basic crawl with markdown output
+crwl https://www.nbcnews.com/business -o markdown
+
+# Deep crawl with BFS strategy, max 10 pages
+crwl https://docs.crawl4ai.com --deep-crawl bfs --max-pages 10
+
+# Use LLM extraction with a specific question
+crwl https://www.example.com/products -q "Extract all product prices"
+```
+
 ## ✨ Features 
 
 <details>
@@ -111,6 +124,7 @@ if __name__ == "__main__":
 
 - 🖥️ **Managed Browser**: Use user-owned browsers with full control, avoiding bot detection.
 - 🔄 **Remote Browser Control**: Connect to Chrome Developer Tools Protocol for remote, large-scale data extraction.
+- 👤 **Browser Profiler**: Create and manage persistent profiles with saved authentication states, cookies, and settings.
 - 🔒 **Session Management**: Preserve browser states and reuse them for multi-step crawling.
 - 🧩 **Proxy Support**: Seamlessly connect to proxies with authentication for secure access.
 - ⚙️ **Full Browser Control**: Modify headers, cookies, user agents, and more for tailored crawling setups.
@@ -139,10 +153,11 @@ if __name__ == "__main__":
 <details>
 <summary>🚀 <strong>Deployment</strong></summary>
 
-- 🐳 **Dockerized Setup**: Optimized Docker image with API server for easy deployment.
+- 🐳 **Dockerized Setup**: Optimized Docker image with FastAPI server for easy deployment.
+- 🔑 **Secure Authentication**: Built-in JWT token authentication for API security.
 - 🔄 **API Gateway**: One-click deployment with secure token authentication for API-based workflows.
 - 🌐 **Scalable Architecture**: Designed for mass-scale production and optimized server performance.
-- ⚙️ **DigitalOcean Deployment**: Ready-to-deploy configurations for DigitalOcean and similar platforms.
+- ☁️ **Cloud Deployment**: Ready-to-deploy configurations for major cloud platforms.
 
 </details>
 
@@ -317,9 +332,8 @@ async def main():
             url="https://docs.micronaut.io/4.7.6/guide/",
             config=run_config
         )
-        print(len(result.markdown))
-        print(len(result.fit_markdown))
-        print(len(result.markdown_v2.fit_markdown))
+        print(len(result.markdown.raw_markdown))
+        print(len(result.markdown.fit_markdown))
 
 if __name__ == "__main__":
     asyncio.run(main())
@@ -406,7 +420,7 @@ if __name__ == "__main__":
 ```python
 import os
 import asyncio
-from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode
+from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode, LLMConfig
 from crawl4ai.extraction_strategy import LLMExtractionStrategy
 from pydantic import BaseModel, Field
 
@@ -422,7 +436,7 @@ async def main():
         extraction_strategy=LLMExtractionStrategy(
             # Here you can use any provider that Litellm library supports, for instance: ollama/qwen2
             # provider="ollama/qwen2", api_token="no-token", 
-            provider="openai/gpt-4o", api_token=os.getenv('OPENAI_API_KEY'), 
+            llm_config = LLMConfig(provider="openai/gpt-4o", api_token=os.getenv('OPENAI_API_KEY')), 
             schema=OpenAIModelFee.schema(),
             extraction_type="schema",
             instruction="""From the crawled content, extract all mentioned model names along with their fees for input and output tokens. 
@@ -446,7 +460,7 @@ if __name__ == "__main__":
 </details>
 
 <details>
-<summary>🤖 <strong>Using You own Browswer with Custome User Profile</strong></summary>
+<summary>🤖 <strong>Using You own Browser with Custom User Profile</strong></summary>
 
 ```python
 import os, sys
@@ -486,21 +500,31 @@ async def test_news_crawl():
 
 ## ✨ Recent Updates
 
--   **🚀 New Dispatcher System**: Scale to thousands of URLs with intelligent **memory monitoring**, **concurrency control**, and optional **rate limiting**. (See `MemoryAdaptiveDispatcher`, `SemaphoreDispatcher`, `RateLimiter`, `CrawlerMonitor`)
--   **⚡ Streaming Mode**: Process results **as they arrive** instead of waiting for an entire batch to complete. (Set `stream=True` in `CrawlerRunConfig`)
--   **🤖 Enhanced LLM Integration**:
-    -   **Automatic schema generation**: Create extraction rules from HTML using OpenAI or Ollama, no manual CSS/XPath needed.
-    -   **LLM-powered Markdown filtering**: Refine your markdown output with a new `LLMContentFilter` that understands content relevance.
-    -   **Ollama Support**: Use open-source or self-hosted models for private or cost-effective extraction.
--   **🏎️ Faster Scraping Option**: New `LXMLWebScrapingStrategy` offers **10-20x speedup** for large, complex pages (experimental).
--   **🤖 robots.txt Compliance**: Respect website rules with `check_robots_txt=True` and efficient local caching.
--   **🔄 Proxy Rotation**: Built-in support for dynamic proxy switching and IP verification, with support for authenticated proxies and session persistence.
--   **➡️ URL Redirection Tracking**: The `redirected_url` field now captures the final destination after any redirects.
--   **🪞 Improved Mirroring**: The `LXMLWebScrapingStrategy` now has much greater fidelity, allowing for almost pixel-perfect mirroring of websites.
--   **📈 Enhanced Monitoring**: Track memory, CPU, and individual crawler status with `CrawlerMonitor`.
--   **📝 Improved Documentation**: More examples, clearer explanations, and updated tutorials.
+### Version 0.5.0 Major Release Highlights
 
-Read the full details in our [0.4.3bx Release Notes](https://github.com/unclecode/crawl4ai/blob/main/CHANGELOG.md).
+-   **🚀 Deep Crawling System**: Explore websites beyond initial URLs with three strategies:
+    -   **BFS Strategy**: Breadth-first search explores websites level by level
+    -   **DFS Strategy**: Depth-first search explores each branch deeply before backtracking
+    -   **BestFirst Strategy**: Uses scoring functions to prioritize which URLs to crawl next
+    -   **Page Limiting**: Control the maximum number of pages to crawl with `max_pages` parameter
+    -   **Score Thresholds**: Filter URLs based on relevance scores
+-   **⚡ Memory-Adaptive Dispatcher**: Dynamically adjusts concurrency based on system memory with built-in rate limiting
+-   **🔄 Multiple Crawling Strategies**:
+    -   **AsyncPlaywrightCrawlerStrategy**: Browser-based crawling with JavaScript support (Default)
+    -   **AsyncHTTPCrawlerStrategy**: Fast, lightweight HTTP-only crawler for simple tasks
+-   **🐳 Docker Deployment**: Easy deployment with FastAPI server and streaming/non-streaming endpoints
+-   **💻 Command-Line Interface**: New `crwl` CLI provides convenient terminal access to all features with intuitive commands and configuration options
+-   **👤 Browser Profiler**: Create and manage persistent browser profiles to save authentication states, cookies, and settings for seamless crawling of protected content
+-   **🧠 Crawl4AI Coding Assistant**: AI-powered coding assistant to answer your question for Crawl4ai, and generate proper code for crawling.
+-   **🏎️ LXML Scraping Mode**: Fast HTML parsing using the `lxml` library for improved performance
+-   **🌐 Proxy Rotation**: Built-in support for proxy switching with `RoundRobinProxyStrategy`
+-   **🤖 LLM Content Filter**: Intelligent markdown generation using LLMs
+-   **📄 PDF Processing**: Extract text, images, and metadata from PDF files
+-   **🔗 URL Redirection Tracking**: Automatically follow and record HTTP redirects
+-   **🤖 LLM Schema Generation**: Easily create extraction schemas with LLM assistance
+-   **🔍 robots.txt Compliance**: Respect website crawling rules
+
+Read the full details in our [0.5.0 Release Notes](https://docs.crawl4ai.com/blog/releases/0.5.0.html) or check the [CHANGELOG](https://github.com/unclecode/crawl4ai/blob/main/CHANGELOG.md).
 
 ## Version Numbering in Crawl4AI
 
@@ -573,9 +597,83 @@ To check our development plans and upcoming features, visit our [Roadmap](https:
 
 We welcome contributions from the open-source community. Check out our [contribution guidelines](https://github.com/unclecode/crawl4ai/blob/main/CONTRIBUTORS.md) for more information.
 
-## 📄 License 
+I'll help modify the license section with badges. For the halftone effect, here's a version with it:
 
-Crawl4AI is released under the [Apache 2.0 License](https://github.com/unclecode/crawl4ai/blob/main/LICENSE).
+Here's the updated license section:
+
+## 📄 License & Attribution
+
+This project is licensed under the Apache License 2.0 with a required attribution clause. See the [Apache 2.0 License](https://github.com/unclecode/crawl4ai/blob/main/LICENSE) file for details.
+
+### Attribution Requirements
+When using Crawl4AI, you must include one of the following attribution methods:
+
+#### 1. Badge Attribution (Recommended)
+Add one of these badges to your README, documentation, or website:
+
+| Theme | Badge |
+|-------|-------|
+| **Disco Theme (Animated)** | <a href="https://github.com/unclecode/crawl4ai"><img src="./docs/assets/powered-by-disco.svg" alt="Powered by Crawl4AI" width="200"/></a> |
+| **Night Theme (Dark with Neon)** | <a href="https://github.com/unclecode/crawl4ai"><img src="./docs/assets/powered-by-night.svg" alt="Powered by Crawl4AI" width="200"/></a> |
+| **Dark Theme (Classic)** | <a href="https://github.com/unclecode/crawl4ai"><img src="./docs/assets/powered-by-dark.svg" alt="Powered by Crawl4AI" width="200"/></a> |
+| **Light Theme (Classic)** | <a href="https://github.com/unclecode/crawl4ai"><img src="./docs/assets/powered-by-light.svg" alt="Powered by Crawl4AI" width="200"/></a> |
+ 
+
+HTML code for adding the badges:
+```html
+<!-- Disco Theme (Animated) -->
+<a href="https://github.com/unclecode/crawl4ai">
+  <img src="https://raw.githubusercontent.com/unclecode/crawl4ai/main/docs/assets/powered-by-disco.svg" alt="Powered by Crawl4AI" width="200"/>
+</a>
+
+<!-- Night Theme (Dark with Neon) -->
+<a href="https://github.com/unclecode/crawl4ai">
+  <img src="https://raw.githubusercontent.com/unclecode/crawl4ai/main/docs/assets/powered-by-night.svg" alt="Powered by Crawl4AI" width="200"/>
+</a>
+
+<!-- Dark Theme (Classic) -->
+<a href="https://github.com/unclecode/crawl4ai">
+  <img src="https://raw.githubusercontent.com/unclecode/crawl4ai/main/docs/assets/powered-by-dark.svg" alt="Powered by Crawl4AI" width="200"/>
+</a>
+
+<!-- Light Theme (Classic) -->
+<a href="https://github.com/unclecode/crawl4ai">
+  <img src="https://raw.githubusercontent.com/unclecode/crawl4ai/main/docs/assets/powered-by-light.svg" alt="Powered by Crawl4AI" width="200"/>
+</a>
+
+<!-- Simple Shield Badge -->
+<a href="https://github.com/unclecode/crawl4ai">
+  <img src="https://img.shields.io/badge/Powered%20by-Crawl4AI-blue?style=flat-square" alt="Powered by Crawl4AI"/>
+</a>
+```
+
+#### 2. Text Attribution
+Add this line to your documentation:
+```
+This project uses Crawl4AI (https://github.com/unclecode/crawl4ai) for web data extraction.
+```
+
+## 📚 Citation
+
+If you use Crawl4AI in your research or project, please cite:
+
+```bibtex
+@software{crawl4ai2024,
+  author = {UncleCode},
+  title = {Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper},
+  year = {2024},
+  publisher = {GitHub},
+  journal = {GitHub Repository},
+  howpublished = {\url{https://github.com/unclecode/crawl4ai}},
+  commit = {Please use the commit hash you're working with}
+}
+```
+
+Text citation format:
+```
+UncleCode. (2024). Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper [Computer software]. 
+GitHub. https://github.com/unclecode/crawl4ai
+```
 
 ## 📧 Contact 
 

cliff.toml

@@ -0,0 +1,24 @@
+[changelog]
+# Template format
+header = """
+# Changelog\n
+All notable changes to this project will be documented in this file.\n
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).\n
+"""
+
+# Organize commits by type
+[git]
+conventional_commits = true
+filter_unconventional = true
+commit_parsers = [
+    { message = "^feat", group = "Added"},
+    { message = "^fix", group = "Fixed"},
+    { message = "^doc", group = "Documentation"},
+    { message = "^perf", group = "Performance"},
+    { message = "^refactor", group = "Changed"},
+    { message = "^style", group = "Changed"},
+    { message = "^test", group = "Testing"},
+    { message = "^chore\\(release\\): prepare for", skip = true},
+    { message = "^chore", group = "Miscellaneous Tasks"},
+]

crawl4ai/__init__.py

@@ -1,22 +1,38 @@
 # __init__.py
+import warnings
 
 from .async_webcrawler import AsyncWebCrawler, CacheMode
-from .async_configs import BrowserConfig, CrawlerRunConfig
+from .async_configs import BrowserConfig, CrawlerRunConfig, HTTPCrawlerConfig, LLMConfig
+
 from .content_scraping_strategy import (
     ContentScrapingStrategy,
     WebScrapingStrategy,
     LXMLWebScrapingStrategy,
 )
+from .async_logger import (
+    AsyncLoggerBase,
+    AsyncLogger,
+)
+from .proxy_strategy import (
+    ProxyRotationStrategy,
+    RoundRobinProxyStrategy,
+)
 from .extraction_strategy import (
     ExtractionStrategy,
     LLMExtractionStrategy,
     CosineStrategy,
     JsonCssExtractionStrategy,
-    JsonXPathExtractionStrategy
+    JsonXPathExtractionStrategy,
+    JsonLxmlExtractionStrategy
 )
 from .chunking_strategy import ChunkingStrategy, RegexChunking
 from .markdown_generation_strategy import DefaultMarkdownGenerator
-from .content_filter_strategy import PruningContentFilter, BM25ContentFilter, LLMContentFilter, RelevantContentFilter
+from .content_filter_strategy import (
+    PruningContentFilter,
+    BM25ContentFilter,
+    LLMContentFilter,
+    RelevantContentFilter,
+)
 from .models import CrawlResult, MarkdownGenerationResult
 from .async_dispatcher import (
     MemoryAdaptiveDispatcher,
@@ -24,23 +40,71 @@ from .async_dispatcher import (
     RateLimiter,
     CrawlerMonitor,
     DisplayMode,
-    BaseDispatcher
+    BaseDispatcher,
+)
+from .docker_client import Crawl4aiDockerClient
+from .hub import CrawlerHub
+from .browser_profiler import BrowserProfiler
+from .deep_crawling import (
+    DeepCrawlStrategy,
+    BFSDeepCrawlStrategy,
+    FilterChain,
+    URLPatternFilter,
+    DomainFilter,
+    ContentTypeFilter,
+    URLFilter,
+    FilterStats,
+    SEOFilter,
+    KeywordRelevanceScorer,
+    URLScorer,
+    CompositeScorer,
+    DomainAuthorityScorer,
+    FreshnessScorer,
+    PathDepthScorer,
+    BestFirstCrawlingStrategy,
+    DFSDeepCrawlStrategy,
+    DeepCrawlDecorator,
 )
 
 __all__ = [
+    "AsyncLoggerBase",
+    "AsyncLogger",
     "AsyncWebCrawler",
+    "BrowserProfiler",
+    "LLMConfig",
+    "DeepCrawlStrategy",
+    "BFSDeepCrawlStrategy",
+    "BestFirstCrawlingStrategy",
+    "DFSDeepCrawlStrategy",
+    "FilterChain",
+    "URLPatternFilter",
+    "ContentTypeFilter",
+    "DomainFilter",
+    "FilterStats",
+    "URLFilter",
+    "SEOFilter",
+    "KeywordRelevanceScorer",
+    "URLScorer",
+    "CompositeScorer",
+    "DomainAuthorityScorer",
+    "FreshnessScorer",
+    "PathDepthScorer",
+    "DeepCrawlDecorator",
     "CrawlResult",
+    "CrawlerHub",
     "CacheMode",
     "ContentScrapingStrategy",
     "WebScrapingStrategy",
     "LXMLWebScrapingStrategy",
     "BrowserConfig",
     "CrawlerRunConfig",
+    "HTTPCrawlerConfig",
     "ExtractionStrategy",
     "LLMExtractionStrategy",
     "CosineStrategy",
     "JsonCssExtractionStrategy",
     "JsonXPathExtractionStrategy",
+    "JsonLxmlExtractionStrategy",
     "ChunkingStrategy",
     "RegexChunking",
     "DefaultMarkdownGenerator",
@@ -55,35 +119,35 @@ __all__ = [
     "CrawlerMonitor",
     "DisplayMode",
     "MarkdownGenerationResult",
+    "Crawl4aiDockerClient",
+    "ProxyRotationStrategy",
+    "RoundRobinProxyStrategy",
 ]
 
 
-def is_sync_version_installed():
-    try:
-        import selenium
+# def is_sync_version_installed():
+#     try:
+#         import selenium # noqa
 
-        return True
-    except ImportError:
-        return False
+#         return True
+#     except ImportError:
+#         return False
 
 
-if is_sync_version_installed():
-    try:
-        from .web_crawler import WebCrawler
+# if is_sync_version_installed():
+#     try:
+#         from .web_crawler import WebCrawler
 
-        __all__.append("WebCrawler")
-    except ImportError:
-        print(
-            "Warning: Failed to import WebCrawler even though selenium is installed. This might be due to other missing dependencies."
-        )
-else:
-    WebCrawler = None
-    # import warnings
-    # print("Warning: Synchronous WebCrawler is not available. Install crawl4ai[sync] for synchronous support. However, please note that the synchronous version will be deprecated soon.")
-
-import warnings
-from pydantic import warnings as pydantic_warnings
+#         __all__.append("WebCrawler")
+#     except ImportError:
+#         print(
+#             "Warning: Failed to import WebCrawler even though selenium is installed. This might be due to other missing dependencies."
+#         )
+# else:
+#     WebCrawler = None
+#     # import warnings
+#     # print("Warning: Synchronous WebCrawler is not available. Install crawl4ai[sync] for synchronous support. However, please note that the synchronous version will be deprecated soon.")
 
 # Disable all Pydantic warnings
 warnings.filterwarnings("ignore", module="pydantic")
-# pydantic_warnings.filter_warnings()
+# pydantic_warnings.filter_warnings()

crawl4ai/__version__.py

@@ -1,3 +1,2 @@
 # crawl4ai/_version.py
-# __version__ = "0.4.3b3"
-__version__ = "0.4.248b3"
+__version__ = "0.5.0.post4"

crawl4ai/async_configs.py

@@ -1,20 +1,158 @@
+import os
 from .config import (
+    DEFAULT_PROVIDER,
     MIN_WORD_THRESHOLD,
     IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD,
+    PROVIDER_MODELS,
     SCREENSHOT_HEIGHT_TRESHOLD,
     PAGE_TIMEOUT,
     IMAGE_SCORE_THRESHOLD,
     SOCIAL_MEDIA_DOMAINS,
 )
 
-from .user_agent_generator import UserAgentGenerator, UAGen, ValidUAGenerator, OnlineUAGenerator
-from .extraction_strategy import ExtractionStrategy
+from .user_agent_generator import UAGen, ValidUAGenerator  # , OnlineUAGenerator
+from .extraction_strategy import ExtractionStrategy, LLMExtractionStrategy
 from .chunking_strategy import ChunkingStrategy, RegexChunking
+
 from .markdown_generation_strategy import MarkdownGenerationStrategy
-from .content_filter_strategy import RelevantContentFilter, BM25ContentFilter, LLMContentFilter, PruningContentFilter
 from .content_scraping_strategy import ContentScrapingStrategy, WebScrapingStrategy
-from typing import Optional, Union, List
+from .deep_crawling import DeepCrawlStrategy
+
 from .cache_context import CacheMode
+from .proxy_strategy import ProxyRotationStrategy
+
+from typing import Union, List
+import inspect
+from typing import Any, Dict, Optional
+from enum import Enum
+
+from .proxy_strategy import ProxyConfig
+
+
+def to_serializable_dict(obj: Any, ignore_default_value : bool = False) -> Dict:
+    """
+    Recursively convert an object to a serializable dictionary using {type, params} structure
+    for complex objects.
+    """
+    if obj is None:
+        return None
+
+    # Handle basic types
+    if isinstance(obj, (str, int, float, bool)):
+        return obj
+
+    # Handle Enum
+    if isinstance(obj, Enum):
+        return {"type": obj.__class__.__name__, "params": obj.value}
+
+    # Handle datetime objects
+    if hasattr(obj, "isoformat"):
+        return obj.isoformat()
+
+    # Handle lists, tuples, and sets, and basically any iterable
+    if isinstance(obj, (list, tuple, set)) or hasattr(obj, '__iter__') and not isinstance(obj, dict):
+        return [to_serializable_dict(item) for item in obj]
+
+    # Handle frozensets, which are not iterable
+    if isinstance(obj, frozenset):
+        return [to_serializable_dict(item) for item in list(obj)]
+
+    # Handle dictionaries - preserve them as-is
+    if isinstance(obj, dict):
+        return {
+            "type": "dict",  # Mark as plain dictionary
+            "value": {str(k): to_serializable_dict(v) for k, v in obj.items()},
+        }
+
+    _type = obj.__class__.__name__
+
+    # Handle class instances
+    if hasattr(obj, "__class__"):
+        # Get constructor signature
+        sig = inspect.signature(obj.__class__.__init__)
+        params = sig.parameters
+
+        # Get current values
+        current_values = {}
+        for name, param in params.items():
+            if name == "self":
+                continue
+
+            value = getattr(obj, name, param.default)
+
+            # Only include if different from default, considering empty values
+            if not (is_empty_value(value) and is_empty_value(param.default)):
+                if value != param.default and not ignore_default_value:
+                    current_values[name] = to_serializable_dict(value)
+        
+        if hasattr(obj, '__slots__'):
+            for slot in obj.__slots__:
+                if slot.startswith('_'):  # Handle private slots
+                    attr_name = slot[1:]  # Remove leading '_'
+                    value = getattr(obj, slot, None)
+                    if value is not None:
+                        current_values[attr_name] = to_serializable_dict(value)
+
+            
+        
+        return {
+            "type": obj.__class__.__name__,
+            "params": current_values
+        }
+        
+    return str(obj)
+
+
+def from_serializable_dict(data: Any) -> Any:
+    """
+    Recursively convert a serializable dictionary back to an object instance.
+    """
+    if data is None:
+        return None
+
+    # Handle basic types
+    if isinstance(data, (str, int, float, bool)):
+        return data
+
+    # Handle typed data
+    if isinstance(data, dict) and "type" in data:
+        # Handle plain dictionaries
+        if data["type"] == "dict":
+            return {k: from_serializable_dict(v) for k, v in data["value"].items()}
+
+        # Import from crawl4ai for class instances
+        import crawl4ai
+
+        cls = getattr(crawl4ai, data["type"])
+
+        # Handle Enum
+        if issubclass(cls, Enum):
+            return cls(data["params"])
+
+        # Handle class instances
+        constructor_args = {
+            k: from_serializable_dict(v) for k, v in data["params"].items()
+        }
+        return cls(**constructor_args)
+
+    # Handle lists
+    if isinstance(data, list):
+        return [from_serializable_dict(item) for item in data]
+
+    # Handle raw dictionaries (legacy support)
+    if isinstance(data, dict):
+        return {k: from_serializable_dict(v) for k, v in data.items()}
+
+    return data
+
+
+def is_empty_value(value: Any) -> bool:
+    """Check if a value is effectively empty/null."""
+    if value is None:
+        return True
+    if isinstance(value, (list, tuple, set, dict, str)) and len(value) == 0:
+        return True
+    return False
 
 
 class BrowserConfig:
@@ -44,10 +182,12 @@ class BrowserConfig:
                               is "chromium". Default: "chromium".
         proxy (Optional[str]): Proxy server URL (e.g., "http://username:password@proxy:port"). If None, no proxy is used.
                              Default: None.
-        proxy_config (dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
+        proxy_config (ProxyConfig or dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
                                      If None, no additional proxy config. Default: None.
         viewport_width (int): Default viewport width for pages. Default: 1080.
         viewport_height (int): Default viewport height for pages. Default: 600.
+        viewport (dict): Default viewport dimensions for pages. If set, overrides viewport_width and viewport_height.
+                         Default: None.
         verbose (bool): Enable verbose logging.
                         Default: True.
         accept_downloads (bool): Whether to allow file downloads. If True, requires a downloads_path.
@@ -87,12 +227,13 @@ class BrowserConfig:
         chrome_channel: str = "chromium",
         channel: str = "chromium",
         proxy: str = None,
-        proxy_config: dict = None,
+        proxy_config: Union[ProxyConfig, dict, None] = None,
         viewport_width: int = 1080,
         viewport_height: int = 600,
+        viewport: dict = None,
         accept_downloads: bool = False,
         downloads_path: str = None,
-        storage_state : Union[str, dict, None]=None,
+        storage_state: Union[str, dict, None] = None,
         ignore_https_errors: bool = True,
         java_script_enabled: bool = True,
         sleep_on_close: bool = False,
@@ -128,6 +269,10 @@ class BrowserConfig:
         self.proxy_config = proxy_config
         self.viewport_width = viewport_width
         self.viewport_height = viewport_height
+        self.viewport = viewport
+        if self.viewport is not None:
+            self.viewport_width = self.viewport.get("width", 1080)
+            self.viewport_height = self.viewport.get("height", 600)
         self.accept_downloads = accept_downloads
         self.downloads_path = downloads_path
         self.storage_state = storage_state
@@ -152,7 +297,7 @@ class BrowserConfig:
             )
         else:
             pass
-        
+
         self.browser_hint = UAGen.generate_client_hints(self.user_agent)
         self.headers.setdefault("sec-ch-ua", self.browser_hint)
 
@@ -172,7 +317,7 @@ class BrowserConfig:
             chrome_channel=kwargs.get("chrome_channel", "chromium"),
             channel=kwargs.get("channel", "chromium"),
             proxy=kwargs.get("proxy"),
-            proxy_config=kwargs.get("proxy_config"),
+            proxy_config=kwargs.get("proxy_config", None),
             viewport_width=kwargs.get("viewport_width", 1080),
             viewport_height=kwargs.get("viewport_height", 600),
             accept_downloads=kwargs.get("accept_downloads", False),
@@ -228,10 +373,10 @@ class BrowserConfig:
 
     def clone(self, **kwargs):
         """Create a copy of this configuration with updated values.
-        
+
         Args:
             **kwargs: Key-value pairs of configuration options to update
-            
+
         Returns:
             BrowserConfig: A new instance with the specified updates
         """
@@ -239,8 +384,98 @@ class BrowserConfig:
         config_dict.update(kwargs)
         return BrowserConfig.from_kwargs(config_dict)
 
+    # Create a funciton returns dict of the object
+    def dump(self) -> dict:
+        # Serialize the object to a dictionary
+        return to_serializable_dict(self)
+
+    @staticmethod
+    def load(data: dict) -> "BrowserConfig":
+        # Deserialize the object from a dictionary
+        config = from_serializable_dict(data)
+        if isinstance(config, BrowserConfig):
+            return config
+        return BrowserConfig.from_kwargs(config)
+
+
+class HTTPCrawlerConfig:
+    """HTTP-specific crawler configuration"""
+
+    method: str = "GET"
+    headers: Optional[Dict[str, str]] = None
+    data: Optional[Dict[str, Any]] = None
+    json: Optional[Dict[str, Any]] = None
+    follow_redirects: bool = True
+    verify_ssl: bool = True
+
+    def __init__(
+        self,
+        method: str = "GET",
+        headers: Optional[Dict[str, str]] = None,
+        data: Optional[Dict[str, Any]] = None,
+        json: Optional[Dict[str, Any]] = None,
+        follow_redirects: bool = True,
+        verify_ssl: bool = True,
+    ):
+        self.method = method
+        self.headers = headers
+        self.data = data
+        self.json = json
+        self.follow_redirects = follow_redirects
+        self.verify_ssl = verify_ssl
+
+    @staticmethod
+    def from_kwargs(kwargs: dict) -> "HTTPCrawlerConfig":
+        return HTTPCrawlerConfig(
+            method=kwargs.get("method", "GET"),
+            headers=kwargs.get("headers"),
+            data=kwargs.get("data"),
+            json=kwargs.get("json"),
+            follow_redirects=kwargs.get("follow_redirects", True),
+            verify_ssl=kwargs.get("verify_ssl", True),
+        )
+
+    def to_dict(self):
+        return {
+            "method": self.method,
+            "headers": self.headers,
+            "data": self.data,
+            "json": self.json,
+            "follow_redirects": self.follow_redirects,
+            "verify_ssl": self.verify_ssl,
+        }
+
+    def clone(self, **kwargs):
+        """Create a copy of this configuration with updated values.
+
+        Args:
+            **kwargs: Key-value pairs of configuration options to update
+
+        Returns:
+            HTTPCrawlerConfig: A new instance with the specified updates
+        """
+        config_dict = self.to_dict()
+        config_dict.update(kwargs)
+        return HTTPCrawlerConfig.from_kwargs(config_dict)
+
+    def dump(self) -> dict:
+        return to_serializable_dict(self)
+
+    @staticmethod
+    def load(data: dict) -> "HTTPCrawlerConfig":
+        config = from_serializable_dict(data)
+        if isinstance(config, HTTPCrawlerConfig):
+            return config
+        return HTTPCrawlerConfig.from_kwargs(config)
+
+class CrawlerRunConfig():
+    _UNWANTED_PROPS = {
+        'disable_cache' : 'Instead, use cache_mode=CacheMode.DISABLED',
+        'bypass_cache' : 'Instead, use cache_mode=CacheMode.BYPASS',
+        'no_cache_read' : 'Instead, use cache_mode=CacheMode.WRITE_ONLY',
+        'no_cache_write' : 'Instead, use cache_mode=CacheMode.READ_ONLY',
+    }
 
-class CrawlerRunConfig:
     """
     Configuration class for controlling how the crawler runs each crawl operation.
     This includes parameters for content extraction, page manipulation, waiting conditions,
@@ -250,6 +485,9 @@ class CrawlerRunConfig:
     By using this class, you have a single place to understand and adjust the crawling options.
 
     Attributes:
+        # Deep Crawl Parameters
+        deep_crawl_strategy (DeepCrawlStrategy or None): Strategy to use for deep crawling.
+
         # Content Processing Parameters
         word_count_threshold (int): Minimum word count threshold before processing content.
                                     Default: MIN_WORD_THRESHOLD (typically 200).
@@ -259,18 +497,27 @@ class CrawlerRunConfig:
                                               Default: RegexChunking().
         markdown_generator (MarkdownGenerationStrategy): Strategy for generating markdown.
                                                          Default: None.
-        content_filter (RelevantContentFilter or None): Optional filter to prune irrelevant content.
-                                                        Default: None.
         only_text (bool): If True, attempt to extract text-only content where applicable.
                           Default: False.
         css_selector (str or None): CSS selector to extract a specific portion of the page.
                                     Default: None.
+        
+        target_elements (list of str or None): List of CSS selectors for specific elements for Markdown generation 
+                                                and structured data extraction. When you set this, only the contents 
+                                                of these elements are processed for extraction and Markdown generation. 
+                                                If you do not set any value, the entire page is processed. 
+                                                The difference between this and css_selector is that this will shrink 
+                                                the initial raw HTML to the selected element, while this will only affect 
+                                                the extraction and Markdown generation.
+                                    Default: None
         excluded_tags (list of str or None): List of HTML tags to exclude from processing.
                                              Default: None.
         excluded_selector (str or None): CSS selector to exclude from processing.
                                          Default: None.
         keep_data_attributes (bool): If True, retain `data-*` attributes while removing unwanted attributes.
                                      Default: False.
+        keep_attrs (list of str): List of HTML attributes to keep during processing.
+                                      Default: [].
         remove_forms (bool): If True, remove all `<form>` elements from the HTML.
                              Default: False.
         prettiify (bool): If True, apply `fast_format_html` to produce prettified HTML output.
@@ -279,13 +526,15 @@ class CrawlerRunConfig:
                            Default: "lxml".
         scraping_strategy (ContentScrapingStrategy): Scraping strategy to use.
                            Default: WebScrapingStrategy.
-        proxy_config (dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
+        proxy_config (ProxyConfig or dict or None): Detailed proxy configuration, e.g. {"server": "...", "username": "..."}.
                                      If None, no additional proxy config. Default: None.
 
+        # SSL Parameters
+        fetch_ssl_certificate: bool = False,
         # Caching Parameters
         cache_mode (CacheMode or None): Defines how caching is handled.
                                         If None, defaults to CacheMode.ENABLED internally.
-                                        Default: None.
+                                        Default: CacheMode.BYPASS.
         session_id (str or None): Optional session ID to persist the browser context and the created
                                   page instance. If the ID already exists, the crawler does not
                                   create a new page and uses the current page to preserve the state.
@@ -357,16 +606,22 @@ class CrawlerRunConfig:
                                      Default: IMAGE_SCORE_THRESHOLD (e.g., 3).
         exclude_external_images (bool): If True, exclude all external images from processing.
                                          Default: False.
+        table_score_threshold (int): Minimum score threshold for processing a table.
+                                     Default: 7.
 
         # Link and Domain Handling Parameters
         exclude_social_media_domains (list of str): List of domains to exclude for social media links.
                                                     Default: SOCIAL_MEDIA_DOMAINS (from config).
         exclude_external_links (bool): If True, exclude all external links from the results.
                                        Default: False.
+        exclude_internal_links (bool): If True, exclude internal links from the results.
+                                       Default: False.
         exclude_social_media_links (bool): If True, exclude links pointing to social media domains.
                                            Default: False.
         exclude_domains (list of str): List of specific domains to exclude from results.
                                        Default: [].
+        exclude_internal_links (bool): If True, exclude internal links from the results.
+                                       Default: False.
 
         # Debugging and Logging Parameters
         verbose (bool): Enable verbose logging.
@@ -374,19 +629,27 @@ class CrawlerRunConfig:
         log_console (bool): If True, log console messages from the page.
                             Default: False.
 
-        # Streaming Parameters
+        # HTTP Crwler Strategy Parameters
+        method (str): HTTP method to use for the request, when using AsyncHTTPCrwalerStrategy.
+                        Default: "GET".
+        data (dict): Data to send in the request body, when using AsyncHTTPCrwalerStrategy.
+                        Default: None.
+        json (dict): JSON data to send in the request body, when using AsyncHTTPCrwalerStrategy.
+
+        # Connection Parameters
         stream (bool): If True, enables streaming of crawled URLs as they are processed when used with arun_many.
                       Default: False.
 
-        # Optional Parameters
-        stream (bool): If True, stream the page content as it is being loaded.
-        url: str = None  # This is not a compulsory parameter
         check_robots_txt (bool): Whether to check robots.txt rules before crawling. Default: False
-        user_agent (str): Custom User-Agent string to use. Default: None
-        user_agent_mode (str or None): Mode for generating the user agent (e.g., "random"). If None, use the provided
-                                       user_agent as-is. Default: None.
+                                 Default: False.
+        user_agent (str): Custom User-Agent string to use.
+                          Default: None.
+        user_agent_mode (str or None): Mode for generating the user agent (e.g., "random"). If None, use the provided user_agent as-is.
+                                       Default: None.
         user_agent_generator_config (dict or None): Configuration for user agent generation if user_agent_mode is set.
                                                     Default: None.
+
+        url: str = None  # This is not a compulsory parameter
     """
 
     def __init__(
@@ -396,21 +659,23 @@ class CrawlerRunConfig:
         extraction_strategy: ExtractionStrategy = None,
         chunking_strategy: ChunkingStrategy = RegexChunking(),
         markdown_generator: MarkdownGenerationStrategy = None,
-        content_filter : RelevantContentFilter = None,
         only_text: bool = False,
         css_selector: str = None,
+        target_elements: List[str] = None,
         excluded_tags: list = None,
         excluded_selector: str = None,
         keep_data_attributes: bool = False,
+        keep_attrs: list = None,
         remove_forms: bool = False,
         prettiify: bool = False,
         parser_type: str = "lxml",
         scraping_strategy: ContentScrapingStrategy = None,
-        proxy_config: dict = None,
+        proxy_config: Union[ProxyConfig, dict, None] = None,
+        proxy_rotation_strategy: Optional[ProxyRotationStrategy] = None,
         # SSL Parameters
         fetch_ssl_certificate: bool = False,
         # Caching Parameters
-        cache_mode: CacheMode =None,
+        cache_mode: CacheMode = CacheMode.BYPASS,
         session_id: str = None,
         bypass_cache: bool = False,
         disable_cache: bool = False,
@@ -445,23 +710,29 @@ class CrawlerRunConfig:
         pdf: bool = False,
         image_description_min_word_threshold: int = IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD,
         image_score_threshold: int = IMAGE_SCORE_THRESHOLD,
+        table_score_threshold: int = 7,
         exclude_external_images: bool = False,
         # Link and Domain Handling Parameters
         exclude_social_media_domains: list = None,
         exclude_external_links: bool = False,
         exclude_social_media_links: bool = False,
         exclude_domains: list = None,
+        exclude_internal_links: bool = False,
         # Debugging and Logging Parameters
         verbose: bool = True,
         log_console: bool = False,
-        # Streaming Parameters
+        # Connection Parameters
+        method: str = "GET",
         stream: bool = False,
         url: str = None,
         check_robots_txt: bool = False,
         user_agent: str = None,
         user_agent_mode: str = None,
         user_agent_generator_config: dict = {},
+        # Deep Crawl Parameters
+        deep_crawl_strategy: Optional[DeepCrawlStrategy] = None,
     ):
+        # TODO: Planning to set properties dynamically based on the __init__ signature
         self.url = url
 
         # Content Processing Parameters
@@ -469,17 +740,19 @@ class CrawlerRunConfig:
         self.extraction_strategy = extraction_strategy
         self.chunking_strategy = chunking_strategy
         self.markdown_generator = markdown_generator
-        self.content_filter = content_filter
         self.only_text = only_text
         self.css_selector = css_selector
+        self.target_elements = target_elements or []
         self.excluded_tags = excluded_tags or []
         self.excluded_selector = excluded_selector or ""
         self.keep_data_attributes = keep_data_attributes
+        self.keep_attrs = keep_attrs or []
         self.remove_forms = remove_forms
         self.prettiify = prettiify
         self.parser_type = parser_type
         self.scraping_strategy = scraping_strategy or WebScrapingStrategy()
         self.proxy_config = proxy_config
+        self.proxy_rotation_strategy = proxy_rotation_strategy
 
         # SSL Parameters
         self.fetch_ssl_certificate = fetch_ssl_certificate
@@ -524,6 +797,7 @@ class CrawlerRunConfig:
         self.image_description_min_word_threshold = image_description_min_word_threshold
         self.image_score_threshold = image_score_threshold
         self.exclude_external_images = exclude_external_images
+        self.table_score_threshold = table_score_threshold
 
         # Link and Domain Handling Parameters
         self.exclude_social_media_domains = (
@@ -532,13 +806,15 @@ class CrawlerRunConfig:
         self.exclude_external_links = exclude_external_links
         self.exclude_social_media_links = exclude_social_media_links
         self.exclude_domains = exclude_domains or []
+        self.exclude_internal_links = exclude_internal_links
 
         # Debugging and Logging Parameters
         self.verbose = verbose
         self.log_console = log_console
 
-        # Streaming Parameters
+        # Connection Parameters
         self.stream = stream
+        self.method = method
 
         # Robots.txt Handling Parameters
         self.check_robots_txt = check_robots_txt
@@ -566,6 +842,27 @@ class CrawlerRunConfig:
         if self.chunking_strategy is None:
             self.chunking_strategy = RegexChunking()
 
+        # Deep Crawl Parameters
+        self.deep_crawl_strategy = deep_crawl_strategy
+
+
+    def __getattr__(self, name):
+        """Handle attribute access."""
+        if name in self._UNWANTED_PROPS:
+            raise AttributeError(f"Getting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
+        raise AttributeError(f"'{self.__class__.__name__}' has no attribute '{name}'")
+
+    def __setattr__(self, name, value):
+        """Handle attribute setting."""
+        # TODO: Planning to set properties dynamically based on the __init__ signature
+        sig = inspect.signature(self.__init__)
+        all_params = sig.parameters  # Dictionary of parameter names and their details
+
+        if name in self._UNWANTED_PROPS and value is not all_params[name].default:
+            raise AttributeError(f"Setting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
+        
+        super().__setattr__(name, value)
+
     @staticmethod
     def from_kwargs(kwargs: dict) -> "CrawlerRunConfig":
         return CrawlerRunConfig(
@@ -574,21 +871,23 @@ class CrawlerRunConfig:
             extraction_strategy=kwargs.get("extraction_strategy"),
             chunking_strategy=kwargs.get("chunking_strategy", RegexChunking()),
             markdown_generator=kwargs.get("markdown_generator"),
-            content_filter=kwargs.get("content_filter"),
             only_text=kwargs.get("only_text", False),
             css_selector=kwargs.get("css_selector"),
+            target_elements=kwargs.get("target_elements", []),
             excluded_tags=kwargs.get("excluded_tags", []),
             excluded_selector=kwargs.get("excluded_selector", ""),
             keep_data_attributes=kwargs.get("keep_data_attributes", False),
+            keep_attrs=kwargs.get("keep_attrs", []),
             remove_forms=kwargs.get("remove_forms", False),
             prettiify=kwargs.get("prettiify", False),
             parser_type=kwargs.get("parser_type", "lxml"),
             scraping_strategy=kwargs.get("scraping_strategy"),
             proxy_config=kwargs.get("proxy_config"),
+            proxy_rotation_strategy=kwargs.get("proxy_rotation_strategy"),
             # SSL Parameters
             fetch_ssl_certificate=kwargs.get("fetch_ssl_certificate", False),
             # Caching Parameters
-            cache_mode=kwargs.get("cache_mode"),
+            cache_mode=kwargs.get("cache_mode", CacheMode.BYPASS),
             session_id=kwargs.get("session_id"),
             bypass_cache=kwargs.get("bypass_cache", False),
             disable_cache=kwargs.get("disable_cache", False),
@@ -630,6 +929,7 @@ class CrawlerRunConfig:
             image_score_threshold=kwargs.get(
                 "image_score_threshold", IMAGE_SCORE_THRESHOLD
             ),
+            table_score_threshold=kwargs.get("table_score_threshold", 7),
             exclude_external_images=kwargs.get("exclude_external_images", False),
             # Link and Domain Handling Parameters
             exclude_social_media_domains=kwargs.get(
@@ -638,36 +938,54 @@ class CrawlerRunConfig:
             exclude_external_links=kwargs.get("exclude_external_links", False),
             exclude_social_media_links=kwargs.get("exclude_social_media_links", False),
             exclude_domains=kwargs.get("exclude_domains", []),
+            exclude_internal_links=kwargs.get("exclude_internal_links", False),
             # Debugging and Logging Parameters
             verbose=kwargs.get("verbose", True),
             log_console=kwargs.get("log_console", False),
-            # Streaming Parameters
+            # Connection Parameters
+            method=kwargs.get("method", "GET"),
             stream=kwargs.get("stream", False),
-            url=kwargs.get("url"),
             check_robots_txt=kwargs.get("check_robots_txt", False),
             user_agent=kwargs.get("user_agent"),
             user_agent_mode=kwargs.get("user_agent_mode"),
             user_agent_generator_config=kwargs.get("user_agent_generator_config", {}),
+            # Deep Crawl Parameters
+            deep_crawl_strategy=kwargs.get("deep_crawl_strategy"),
+            url=kwargs.get("url"),
         )
 
     # Create a funciton returns dict of the object
+    def dump(self) -> dict:
+        # Serialize the object to a dictionary
+        return to_serializable_dict(self)
+
+    @staticmethod
+    def load(data: dict) -> "CrawlerRunConfig":
+        # Deserialize the object from a dictionary
+        config = from_serializable_dict(data)
+        if isinstance(config, CrawlerRunConfig):
+            return config
+        return CrawlerRunConfig.from_kwargs(config)
+
     def to_dict(self):
         return {
             "word_count_threshold": self.word_count_threshold,
             "extraction_strategy": self.extraction_strategy,
             "chunking_strategy": self.chunking_strategy,
             "markdown_generator": self.markdown_generator,
-            "content_filter": self.content_filter,
             "only_text": self.only_text,
             "css_selector": self.css_selector,
+            "target_elements": self.target_elements,
             "excluded_tags": self.excluded_tags,
             "excluded_selector": self.excluded_selector,
             "keep_data_attributes": self.keep_data_attributes,
+            "keep_attrs": self.keep_attrs,
             "remove_forms": self.remove_forms,
             "prettiify": self.prettiify,
             "parser_type": self.parser_type,
             "scraping_strategy": self.scraping_strategy,
             "proxy_config": self.proxy_config,
+            "proxy_rotation_strategy": self.proxy_rotation_strategy,
             "fetch_ssl_certificate": self.fetch_ssl_certificate,
             "cache_mode": self.cache_mode,
             "session_id": self.session_id,
@@ -701,35 +1019,39 @@ class CrawlerRunConfig:
             "pdf": self.pdf,
             "image_description_min_word_threshold": self.image_description_min_word_threshold,
             "image_score_threshold": self.image_score_threshold,
+            "table_score_threshold": self.table_score_threshold,
             "exclude_external_images": self.exclude_external_images,
             "exclude_social_media_domains": self.exclude_social_media_domains,
             "exclude_external_links": self.exclude_external_links,
             "exclude_social_media_links": self.exclude_social_media_links,
             "exclude_domains": self.exclude_domains,
+            "exclude_internal_links": self.exclude_internal_links,
             "verbose": self.verbose,
             "log_console": self.log_console,
+            "method": self.method,
             "stream": self.stream,
-            "url": self.url,
             "check_robots_txt": self.check_robots_txt,
             "user_agent": self.user_agent,
             "user_agent_mode": self.user_agent_mode,
             "user_agent_generator_config": self.user_agent_generator_config,
+            "deep_crawl_strategy": self.deep_crawl_strategy,
+            "url": self.url,
         }
 
     def clone(self, **kwargs):
         """Create a copy of this configuration with updated values.
-        
+
         Args:
             **kwargs: Key-value pairs of configuration options to update
-            
+
         Returns:
             CrawlerRunConfig: A new instance with the specified updates
-            
+
         Example:
             ```python
             # Create a new config with streaming enabled
             stream_config = config.clone(stream=True)
-            
+
             # Create a new config with multiple updates
             new_config = config.clone(
                 stream=True,
@@ -741,3 +1063,54 @@ class CrawlerRunConfig:
         config_dict = self.to_dict()
         config_dict.update(kwargs)
         return CrawlerRunConfig.from_kwargs(config_dict)
+
+
+class LLMConfig:
+    def __init__(
+        self,
+        provider: str = DEFAULT_PROVIDER,
+        api_token: Optional[str] = None,
+        base_url: Optional[str] = None,
+    ):
+        """Configuaration class for LLM provider and API token."""
+        self.provider = provider
+        if api_token and not api_token.startswith("env:"):
+            self.api_token = api_token
+        elif api_token and api_token.startswith("env:"):
+            self.api_token = os.getenv(api_token[4:])
+        else:
+            self.api_token = PROVIDER_MODELS.get(provider, "no-token") or os.getenv(
+                "OPENAI_API_KEY"
+            )
+        self.base_url = base_url
+
+
+    @staticmethod
+    def from_kwargs(kwargs: dict) -> "LLMConfig":
+        return LLMConfig(
+            provider=kwargs.get("provider", DEFAULT_PROVIDER),
+            api_token=kwargs.get("api_token"),
+            base_url=kwargs.get("base_url"),
+        )
+
+    def to_dict(self):
+        return {
+            "provider": self.provider,
+            "api_token": self.api_token,
+            "base_url": self.base_url
+        }
+
+    def clone(self, **kwargs):
+        """Create a copy of this configuration with updated values.
+
+        Args:
+            **kwargs: Key-value pairs of configuration options to update
+
+        Returns:
+            llm_config: A new instance with the specified updates
+        """
+        config_dict = self.to_dict()
+        config_dict.update(kwargs)
+        return LLMConfig.from_kwargs(config_dict)
+
+

crawl4ai/async_database.py

@@ -4,12 +4,12 @@ import aiosqlite
 import asyncio
 from typing import Optional, Dict
 from contextlib import asynccontextmanager
-import logging
 import json  # Added for serialization/deserialization
 from .utils import ensure_content_dirs, generate_content_hash
-from .models import CrawlResult, MarkdownGenerationResult
+from .models import CrawlResult, MarkdownGenerationResult, StringCompatibleMarkdown
+# , StringCompatibleMarkdown
 import aiofiles
-from .version_manager import VersionManager
+from .utils import VersionManager
 from .async_logger import AsyncLogger
 from .utils import get_error_context, create_box_message
 
@@ -336,12 +336,17 @@ class AsyncDatabaseManager:
                     except json.JSONDecodeError:
                         # Very UGLY, never mention it to me please
                         if field == "markdown" and isinstance(row_dict[field], str):
-                            row_dict[field] = row_dict[field]
+                            row_dict[field] = MarkdownGenerationResult(
+                                raw_markdown=row_dict[field] or "",
+                                markdown_with_citations="",
+                                references_markdown="",
+                                fit_markdown="",
+                                fit_html="",
+                            )
                         else:
                             row_dict[field] = {}
 
                 if isinstance(row_dict["markdown"], Dict):
-                    row_dict["markdown_v2"] = row_dict["markdown"]
                     if row_dict["markdown"].get("raw_markdown"):
                         row_dict["markdown"] = row_dict["markdown"]["raw_markdown"]
 
@@ -358,7 +363,7 @@ class AsyncDatabaseManager:
                 # Remove any fields not in CrawlResult model
                 valid_fields = CrawlResult.__annotations__.keys()
                 filtered_dict = {k: v for k, v in row_dict.items() if k in valid_fields}
-
+                filtered_dict["markdown"] = row_dict["markdown"]
                 return CrawlResult(**filtered_dict)
 
         try:
@@ -384,14 +389,14 @@ class AsyncDatabaseManager:
         }
 
         try:
-            if isinstance(result.markdown, MarkdownGenerationResult):
+            if isinstance(result.markdown, StringCompatibleMarkdown):
                 content_map["markdown"] = (
-                    result.markdown.model_dump_json(),
+                    result.markdown,
                     "markdown",
                 )
-            elif hasattr(result, "markdown_v2"):
+            elif isinstance(result.markdown, MarkdownGenerationResult):
                 content_map["markdown"] = (
-                    result.markdown_v2.model_dump_json(),
+                    result.markdown.model_dump_json(),
                     "markdown",
                 )
             elif isinstance(result.markdown, str):

crawl4ai/async_dispatcher.py

@@ -13,7 +13,7 @@ from rich.live import Live
 from rich.table import Table
 from rich.console import Console
 from rich import box
-from datetime import datetime, timedelta
+from datetime import timedelta, datetime
 from collections.abc import AsyncGenerator
 import time
 import psutil
@@ -24,6 +24,7 @@ from urllib.parse import urlparse
 import random
 from abc import ABC, abstractmethod
 
+from math import inf as infinity
 
 
 class RateLimiter:
@@ -97,7 +98,7 @@ class CrawlerMonitor:
         self.display_mode = display_mode
         self.stats: Dict[str, CrawlStats] = {}
         self.process = psutil.Process()
-        self.start_time = datetime.now()
+        self.start_time = time.time()
         self.live = Live(self._create_table(), refresh_per_second=2)
 
     def start(self):
@@ -151,7 +152,7 @@ class CrawlerMonitor:
         )
 
         # Duration
-        duration = datetime.now() - self.start_time
+        duration = time.time() - self.start_time
 
         # Create status row
         table.add_column("Status", style="bold cyan")
@@ -162,22 +163,22 @@ class CrawlerMonitor:
         table.add_row(
             "[yellow]In Queue[/yellow]",
             str(queued),
-            f"{(queued/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
+            f"{(queued / total_tasks * 100):.1f}%" if total_tasks > 0 else "0%",
         )
         table.add_row(
             "[blue]In Progress[/blue]",
             str(in_progress),
-            f"{(in_progress/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
+            f"{(in_progress / total_tasks * 100):.1f}%" if total_tasks > 0 else "0%",
         )
         table.add_row(
             "[green]Completed[/green]",
             str(completed),
-            f"{(completed/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
+            f"{(completed / total_tasks * 100):.1f}%" if total_tasks > 0 else "0%",
         )
         table.add_row(
             "[red]Failed[/red]",
             str(failed),
-            f"{(failed/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
+            f"{(failed / total_tasks * 100):.1f}%" if total_tasks > 0 else "0%",
         )
 
         # Add memory information
@@ -193,7 +194,7 @@ class CrawlerMonitor:
         )
         table.add_row(
             "[yellow]Runtime[/yellow]",
-            str(timedelta(seconds=int(duration.total_seconds()))),
+            str(timedelta(seconds=int(duration))),
             "",
         )
 
@@ -236,7 +237,7 @@ class CrawlerMonitor:
             f"{self.process.memory_info().rss / (1024 * 1024):.1f}",
             str(
                 timedelta(
-                    seconds=int((datetime.now() - self.start_time).total_seconds())
+                    seconds=int(time.time() - self.start_time)
                 )
             ),
             f"✓{completed_count} ✗{failed_count}",
@@ -251,7 +252,7 @@ class CrawlerMonitor:
             key=lambda x: (
                 x.status != CrawlStatus.IN_PROGRESS,
                 x.status != CrawlStatus.QUEUED,
-                x.end_time or datetime.max,
+                x.end_time or infinity,
             ),
         )[: self.max_visible_rows]
 
@@ -338,7 +339,7 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
         config: CrawlerRunConfig,
         task_id: str,
     ) -> CrawlerTaskResult:
-        start_time = datetime.now()
+        start_time = time.time()
         error_message = ""
         memory_usage = peak_memory = 0.0
 
@@ -371,7 +372,7 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
                         memory_usage=memory_usage,
                         peak_memory=peak_memory,
                         start_time=start_time,
-                        end_time=datetime.now(),
+                        end_time=time.time(),
                         error_message=error_message,
                     )
                     await self.result_queue.put(result)
@@ -393,7 +394,7 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
             )
 
         finally:
-            end_time = datetime.now()
+            end_time = time.time()
             if self.monitor:
                 self.monitor.update_task(
                     task_id,
@@ -420,59 +421,59 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
         urls: List[str],
         crawler: "AsyncWebCrawler",  # noqa: F821
         config: CrawlerRunConfig,
-        ) -> List[CrawlerTaskResult]:
-            self.crawler = crawler
+    ) -> List[CrawlerTaskResult]:
+        self.crawler = crawler
 
-            if self.monitor:
-                self.monitor.start()
+        if self.monitor:
+            self.monitor.start()
 
-            try:
-                pending_tasks = []
-                active_tasks = []
-                task_queue = []
+        try:
+            pending_tasks = []
+            active_tasks = []
+            task_queue = []
 
-                for url in urls:
-                    task_id = str(uuid.uuid4())
-                    if self.monitor:
-                        self.monitor.add_task(task_id, url)
-                    task_queue.append((url, task_id))
+            for url in urls:
+                task_id = str(uuid.uuid4())
+                if self.monitor:
+                    self.monitor.add_task(task_id, url)
+                task_queue.append((url, task_id))
 
-                while task_queue or active_tasks:
-                    wait_start_time = time.time()
-                    while len(active_tasks) < self.max_session_permit and task_queue:
-                        if psutil.virtual_memory().percent >= self.memory_threshold_percent:
-                            # Check if we've exceeded the timeout
-                            if time.time() - wait_start_time > self.memory_wait_timeout:
-                                raise MemoryError(
-                                    f"Memory usage above threshold ({self.memory_threshold_percent}%) for more than {self.memory_wait_timeout} seconds"
-                                )
-                            await asyncio.sleep(self.check_interval)
-                            continue
-
-                        url, task_id = task_queue.pop(0)
-                        task = asyncio.create_task(self.crawl_url(url, config, task_id))
-                        active_tasks.append(task)
-
-                    if not active_tasks:
+            while task_queue or active_tasks:
+                wait_start_time = time.time()
+                while len(active_tasks) < self.max_session_permit and task_queue:
+                    if psutil.virtual_memory().percent >= self.memory_threshold_percent:
+                        # Check if we've exceeded the timeout
+                        if time.time() - wait_start_time > self.memory_wait_timeout:
+                            raise MemoryError(
+                                f"Memory usage above threshold ({self.memory_threshold_percent}%) for more than {self.memory_wait_timeout} seconds"
+                            )
                         await asyncio.sleep(self.check_interval)
                         continue
 
-                    done, pending = await asyncio.wait(
-                        active_tasks, return_when=asyncio.FIRST_COMPLETED
-                    )
+                    url, task_id = task_queue.pop(0)
+                    task = asyncio.create_task(self.crawl_url(url, config, task_id))
+                    active_tasks.append(task)
 
-                    pending_tasks.extend(done)
-                    active_tasks = list(pending)
+                if not active_tasks:
+                    await asyncio.sleep(self.check_interval)
+                    continue
 
-                return await asyncio.gather(*pending_tasks)
-            finally:
-                if self.monitor:
-                    self.monitor.stop()
+                done, pending = await asyncio.wait(
+                    active_tasks, return_when=asyncio.FIRST_COMPLETED
+                )
+
+                pending_tasks.extend(done)
+                active_tasks = list(pending)
+
+            return await asyncio.gather(*pending_tasks)
+        finally:
+            if self.monitor:
+                self.monitor.stop()
 
     async def run_urls_stream(
         self,
         urls: List[str],
-        crawler: "AsyncWebCrawler",
+        crawler: "AsyncWebCrawler", # noqa: F821
         config: CrawlerRunConfig,
     ) -> AsyncGenerator[CrawlerTaskResult, None]:
         self.crawler = crawler
@@ -509,9 +510,7 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
                 # Wait for any task to complete and yield results
                 if active_tasks:
                     done, pending = await asyncio.wait(
-                        active_tasks,
-                        timeout=0.1,
-                        return_when=asyncio.FIRST_COMPLETED
+                        active_tasks, timeout=0.1, return_when=asyncio.FIRST_COMPLETED
                     )
                     for completed_task in done:
                         result = await completed_task
@@ -525,6 +524,7 @@ class MemoryAdaptiveDispatcher(BaseDispatcher):
             if self.monitor:
                 self.monitor.stop()
 
+
 class SemaphoreDispatcher(BaseDispatcher):
     def __init__(
         self,
@@ -544,7 +544,7 @@ class SemaphoreDispatcher(BaseDispatcher):
         task_id: str,
         semaphore: asyncio.Semaphore = None,
     ) -> CrawlerTaskResult:
-        start_time = datetime.now()
+        start_time = time.time()
         error_message = ""
         memory_usage = peak_memory = 0.0
 
@@ -577,7 +577,7 @@ class SemaphoreDispatcher(BaseDispatcher):
                             memory_usage=memory_usage,
                             peak_memory=peak_memory,
                             start_time=start_time,
-                            end_time=datetime.now(),
+                            end_time=time.time(),
                             error_message=error_message,
                         )
 
@@ -597,7 +597,7 @@ class SemaphoreDispatcher(BaseDispatcher):
             )
 
         finally:
-            end_time = datetime.now()
+            end_time = time.time()
             if self.monitor:
                 self.monitor.update_task(
                     task_id,

crawl4ai/async_dispatcher_.py

@@ -1,588 +0,0 @@
-from typing import Dict, Optional, List, Tuple
-from .async_configs import CrawlerRunConfig
-from .models import (
-    CrawlResult,
-    CrawlerTaskResult,
-    CrawlStatus,
-    DisplayMode,
-    CrawlStats,
-    DomainState,
-)
-
-from rich.live import Live
-from rich.table import Table
-from rich.console import Console
-from rich import box
-from datetime import datetime, timedelta
-
-import time
-import psutil
-import asyncio
-import uuid
-
-from urllib.parse import urlparse
-import random
-from abc import ABC, abstractmethod
-
-
-class RateLimiter:
-    def __init__(
-        self,
-        base_delay: Tuple[float, float] = (1.0, 3.0),
-        max_delay: float = 60.0,
-        max_retries: int = 3,
-        rate_limit_codes: List[int] = None,
-    ):
-        self.base_delay = base_delay
-        self.max_delay = max_delay
-        self.max_retries = max_retries
-        self.rate_limit_codes = rate_limit_codes or [429, 503]
-        self.domains: Dict[str, DomainState] = {}
-
-    def get_domain(self, url: str) -> str:
-        return urlparse(url).netloc
-
-    async def wait_if_needed(self, url: str) -> None:
-        domain = self.get_domain(url)
-        state = self.domains.get(domain)
-
-        if not state:
-            self.domains[domain] = DomainState()
-            state = self.domains[domain]
-
-        now = time.time()
-        if state.last_request_time:
-            wait_time = max(0, state.current_delay - (now - state.last_request_time))
-            if wait_time > 0:
-                await asyncio.sleep(wait_time)
-
-        # Random delay within base range if no current delay
-        if state.current_delay == 0:
-            state.current_delay = random.uniform(*self.base_delay)
-
-        state.last_request_time = time.time()
-
-    def update_delay(self, url: str, status_code: int) -> bool:
-        domain = self.get_domain(url)
-        state = self.domains[domain]
-
-        if status_code in self.rate_limit_codes:
-            state.fail_count += 1
-            if state.fail_count > self.max_retries:
-                return False
-
-            # Exponential backoff with random jitter
-            state.current_delay = min(
-                state.current_delay * 2 * random.uniform(0.75, 1.25), self.max_delay
-            )
-        else:
-            # Gradually reduce delay on success
-            state.current_delay = max(
-                random.uniform(*self.base_delay), state.current_delay * 0.75
-            )
-            state.fail_count = 0
-
-        return True
-
-
-class CrawlerMonitor:
-    def __init__(
-        self,
-        max_visible_rows: int = 15,
-        display_mode: DisplayMode = DisplayMode.DETAILED,
-    ):
-        self.console = Console()
-        self.max_visible_rows = max_visible_rows
-        self.display_mode = display_mode
-        self.stats: Dict[str, CrawlStats] = {}
-        self.process = psutil.Process()
-        self.start_time = datetime.now()
-        self.live = Live(self._create_table(), refresh_per_second=2)
-
-    def start(self):
-        self.live.start()
-
-    def stop(self):
-        self.live.stop()
-
-    def add_task(self, task_id: str, url: str):
-        self.stats[task_id] = CrawlStats(
-            task_id=task_id, url=url, status=CrawlStatus.QUEUED
-        )
-        self.live.update(self._create_table())
-
-    def update_task(self, task_id: str, **kwargs):
-        if task_id in self.stats:
-            for key, value in kwargs.items():
-                setattr(self.stats[task_id], key, value)
-            self.live.update(self._create_table())
-
-    def _create_aggregated_table(self) -> Table:
-        """Creates a compact table showing only aggregated statistics"""
-        table = Table(
-            box=box.ROUNDED,
-            title="Crawler Status Overview",
-            title_style="bold magenta",
-            header_style="bold blue",
-            show_lines=True,
-        )
-
-        # Calculate statistics
-        total_tasks = len(self.stats)
-        queued = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.QUEUED
-        )
-        in_progress = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.IN_PROGRESS
-        )
-        completed = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.COMPLETED
-        )
-        failed = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.FAILED
-        )
-
-        # Memory statistics
-        current_memory = self.process.memory_info().rss / (1024 * 1024)
-        total_task_memory = sum(stat.memory_usage for stat in self.stats.values())
-        peak_memory = max(
-            (stat.peak_memory for stat in self.stats.values()), default=0.0
-        )
-
-        # Duration
-        duration = datetime.now() - self.start_time
-
-        # Create status row
-        table.add_column("Status", style="bold cyan")
-        table.add_column("Count", justify="right")
-        table.add_column("Percentage", justify="right")
-
-        table.add_row("Total Tasks", str(total_tasks), "100%")
-        table.add_row(
-            "[yellow]In Queue[/yellow]",
-            str(queued),
-            f"{(queued/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
-        )
-        table.add_row(
-            "[blue]In Progress[/blue]",
-            str(in_progress),
-            f"{(in_progress/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
-        )
-        table.add_row(
-            "[green]Completed[/green]",
-            str(completed),
-            f"{(completed/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
-        )
-        table.add_row(
-            "[red]Failed[/red]",
-            str(failed),
-            f"{(failed/total_tasks*100):.1f}%" if total_tasks > 0 else "0%",
-        )
-
-        # Add memory information
-        table.add_section()
-        table.add_row(
-            "[magenta]Current Memory[/magenta]", f"{current_memory:.1f} MB", ""
-        )
-        table.add_row(
-            "[magenta]Total Task Memory[/magenta]", f"{total_task_memory:.1f} MB", ""
-        )
-        table.add_row(
-            "[magenta]Peak Task Memory[/magenta]", f"{peak_memory:.1f} MB", ""
-        )
-        table.add_row(
-            "[yellow]Runtime[/yellow]",
-            str(timedelta(seconds=int(duration.total_seconds()))),
-            "",
-        )
-
-        return table
-
-    def _create_detailed_table(self) -> Table:
-        table = Table(
-            box=box.ROUNDED,
-            title="Crawler Performance Monitor",
-            title_style="bold magenta",
-            header_style="bold blue",
-        )
-
-        # Add columns
-        table.add_column("Task ID", style="cyan", no_wrap=True)
-        table.add_column("URL", style="cyan", no_wrap=True)
-        table.add_column("Status", style="bold")
-        table.add_column("Memory (MB)", justify="right")
-        table.add_column("Peak (MB)", justify="right")
-        table.add_column("Duration", justify="right")
-        table.add_column("Info", style="italic")
-
-        # Add summary row
-        total_memory = sum(stat.memory_usage for stat in self.stats.values())
-        active_count = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.IN_PROGRESS
-        )
-        completed_count = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.COMPLETED
-        )
-        failed_count = sum(
-            1 for stat in self.stats.values() if stat.status == CrawlStatus.FAILED
-        )
-
-        table.add_row(
-            "[bold yellow]SUMMARY",
-            f"Total: {len(self.stats)}",
-            f"Active: {active_count}",
-            f"{total_memory:.1f}",
-            f"{self.process.memory_info().rss / (1024 * 1024):.1f}",
-            str(
-                timedelta(
-                    seconds=int((datetime.now() - self.start_time).total_seconds())
-                )
-            ),
-            f"✓{completed_count} ✗{failed_count}",
-            style="bold",
-        )
-
-        table.add_section()
-
-        # Add rows for each task
-        visible_stats = sorted(
-            self.stats.values(),
-            key=lambda x: (
-                x.status != CrawlStatus.IN_PROGRESS,
-                x.status != CrawlStatus.QUEUED,
-                x.end_time or datetime.max,
-            ),
-        )[: self.max_visible_rows]
-
-        for stat in visible_stats:
-            status_style = {
-                CrawlStatus.QUEUED: "white",
-                CrawlStatus.IN_PROGRESS: "yellow",
-                CrawlStatus.COMPLETED: "green",
-                CrawlStatus.FAILED: "red",
-            }[stat.status]
-
-            table.add_row(
-                stat.task_id[:8],  # Show first 8 chars of task ID
-                stat.url[:40] + "..." if len(stat.url) > 40 else stat.url,
-                f"[{status_style}]{stat.status.value}[/{status_style}]",
-                f"{stat.memory_usage:.1f}",
-                f"{stat.peak_memory:.1f}",
-                stat.duration,
-                stat.error_message[:40] if stat.error_message else "",
-            )
-
-        return table
-
-    def _create_table(self) -> Table:
-        """Creates the appropriate table based on display mode"""
-        if self.display_mode == DisplayMode.AGGREGATED:
-            return self._create_aggregated_table()
-        return self._create_detailed_table()
-
-
-class BaseDispatcher(ABC):
-    def __init__(
-        self,
-        rate_limiter: Optional[RateLimiter] = None,
-        monitor: Optional[CrawlerMonitor] = None,
-    ):
-        self.crawler = None
-        self._domain_last_hit: Dict[str, float] = {}
-        self.concurrent_sessions = 0
-        self.rate_limiter = rate_limiter
-        self.monitor = monitor
-
-    @abstractmethod
-    async def crawl_url(
-        self,
-        url: str,
-        config: CrawlerRunConfig,
-        task_id: str,
-        monitor: Optional[CrawlerMonitor] = None,
-    ) -> CrawlerTaskResult:
-        pass
-
-    @abstractmethod
-    async def run_urls(
-        self,
-        urls: List[str],
-        crawler: "AsyncWebCrawler",  # noqa: F821
-        config: CrawlerRunConfig,
-        monitor: Optional[CrawlerMonitor] = None,
-    ) -> List[CrawlerTaskResult]:
-        pass
-
-
-class MemoryAdaptiveDispatcher(BaseDispatcher):
-    def __init__(
-        self,
-        memory_threshold_percent: float = 90.0,
-        check_interval: float = 1.0,
-        max_session_permit: int = 20,
-        memory_wait_timeout: float = 300.0,  # 5 minutes default timeout
-        rate_limiter: Optional[RateLimiter] = None,
-        monitor: Optional[CrawlerMonitor] = None,
-    ):
-        super().__init__(rate_limiter, monitor)
-        self.memory_threshold_percent = memory_threshold_percent
-        self.check_interval = check_interval
-        self.max_session_permit = max_session_permit
-        self.memory_wait_timeout = memory_wait_timeout
-
-    async def crawl_url(
-        self,
-        url: str,
-        config: CrawlerRunConfig,
-        task_id: str,
-    ) -> CrawlerTaskResult:
-        start_time = datetime.now()
-        error_message = ""
-        memory_usage = peak_memory = 0.0
-
-        try:
-            if self.monitor:
-                self.monitor.update_task(
-                    task_id, status=CrawlStatus.IN_PROGRESS, start_time=start_time
-                )
-            self.concurrent_sessions += 1
-
-            if self.rate_limiter:
-                await self.rate_limiter.wait_if_needed(url)
-
-            process = psutil.Process()
-            start_memory = process.memory_info().rss / (1024 * 1024)
-            result = await self.crawler.arun(url, config=config, session_id=task_id)
-            end_memory = process.memory_info().rss / (1024 * 1024)
-
-            memory_usage = peak_memory = end_memory - start_memory
-
-            if self.rate_limiter and result.status_code:
-                if not self.rate_limiter.update_delay(url, result.status_code):
-                    error_message = f"Rate limit retry count exceeded for domain {urlparse(url).netloc}"
-                    if self.monitor:
-                        self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-                    return CrawlerTaskResult(
-                        task_id=task_id,
-                        url=url,
-                        result=result,
-                        memory_usage=memory_usage,
-                        peak_memory=peak_memory,
-                        start_time=start_time,
-                        end_time=datetime.now(),
-                        error_message=error_message,
-                    )
-
-            if not result.success:
-                error_message = result.error_message
-                if self.monitor:
-                    self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-            elif self.monitor:
-                self.monitor.update_task(task_id, status=CrawlStatus.COMPLETED)
-
-        except Exception as e:
-            error_message = str(e)
-            if self.monitor:
-                self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-            result = CrawlResult(
-                url=url, html="", metadata={}, success=False, error_message=str(e)
-            )
-
-        finally:
-            end_time = datetime.now()
-            if self.monitor:
-                self.monitor.update_task(
-                    task_id,
-                    end_time=end_time,
-                    memory_usage=memory_usage,
-                    peak_memory=peak_memory,
-                    error_message=error_message,
-                )
-            self.concurrent_sessions -= 1
-
-        return CrawlerTaskResult(
-            task_id=task_id,
-            url=url,
-            result=result,
-            memory_usage=memory_usage,
-            peak_memory=peak_memory,
-            start_time=start_time,
-            end_time=end_time,
-            error_message=error_message,
-        )
-
-    async def run_urls(
-        self,
-        urls: List[str],
-        crawler: "AsyncWebCrawler",  # noqa: F821
-        config: CrawlerRunConfig,
-    ) -> List[CrawlerTaskResult]:
-        self.crawler = crawler
-
-        if self.monitor:
-            self.monitor.start()
-
-        try:
-            pending_tasks = []
-            active_tasks = []
-            task_queue = []
-
-            for url in urls:
-                task_id = str(uuid.uuid4())
-                if self.monitor:
-                    self.monitor.add_task(task_id, url)
-                task_queue.append((url, task_id))
-
-            while task_queue or active_tasks:
-                wait_start_time = time.time()
-                while len(active_tasks) < self.max_session_permit and task_queue:
-                    if psutil.virtual_memory().percent >= self.memory_threshold_percent:
-                        # Check if we've exceeded the timeout
-                        if time.time() - wait_start_time > self.memory_wait_timeout:
-                            raise MemoryError(
-                                f"Memory usage above threshold ({self.memory_threshold_percent}%) for more than {self.memory_wait_timeout} seconds"
-                            )
-                        await asyncio.sleep(self.check_interval)
-                        continue
-
-                    url, task_id = task_queue.pop(0)
-                    task = asyncio.create_task(self.crawl_url(url, config, task_id))
-                    active_tasks.append(task)
-
-                if not active_tasks:
-                    await asyncio.sleep(self.check_interval)
-                    continue
-
-                done, pending = await asyncio.wait(
-                    active_tasks, return_when=asyncio.FIRST_COMPLETED
-                )
-
-                pending_tasks.extend(done)
-                active_tasks = list(pending)
-
-            return await asyncio.gather(*pending_tasks)
-        finally:
-            if self.monitor:
-                self.monitor.stop()
-
-
-class SemaphoreDispatcher(BaseDispatcher):
-    def __init__(
-        self,
-        semaphore_count: int = 5,
-        max_session_permit: int = 20,
-        rate_limiter: Optional[RateLimiter] = None,
-        monitor: Optional[CrawlerMonitor] = None,
-    ):
-        super().__init__(rate_limiter, monitor)
-        self.semaphore_count = semaphore_count
-        self.max_session_permit = max_session_permit
-
-    async def crawl_url(
-        self,
-        url: str,
-        config: CrawlerRunConfig,
-        task_id: str,
-        semaphore: asyncio.Semaphore = None,
-    ) -> CrawlerTaskResult:
-        start_time = datetime.now()
-        error_message = ""
-        memory_usage = peak_memory = 0.0
-
-        try:
-            if self.monitor:
-                self.monitor.update_task(
-                    task_id, status=CrawlStatus.IN_PROGRESS, start_time=start_time
-                )
-
-            if self.rate_limiter:
-                await self.rate_limiter.wait_if_needed(url)
-
-            async with semaphore:
-                process = psutil.Process()
-                start_memory = process.memory_info().rss / (1024 * 1024)
-                result = await self.crawler.arun(url, config=config, session_id=task_id)
-                end_memory = process.memory_info().rss / (1024 * 1024)
-
-                memory_usage = peak_memory = end_memory - start_memory
-
-                if self.rate_limiter and result.status_code:
-                    if not self.rate_limiter.update_delay(url, result.status_code):
-                        error_message = f"Rate limit retry count exceeded for domain {urlparse(url).netloc}"
-                        if self.monitor:
-                            self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-                        return CrawlerTaskResult(
-                            task_id=task_id,
-                            url=url,
-                            result=result,
-                            memory_usage=memory_usage,
-                            peak_memory=peak_memory,
-                            start_time=start_time,
-                            end_time=datetime.now(),
-                            error_message=error_message,
-                        )
-
-                if not result.success:
-                    error_message = result.error_message
-                    if self.monitor:
-                        self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-                elif self.monitor:
-                    self.monitor.update_task(task_id, status=CrawlStatus.COMPLETED)
-
-        except Exception as e:
-            error_message = str(e)
-            if self.monitor:
-                self.monitor.update_task(task_id, status=CrawlStatus.FAILED)
-            result = CrawlResult(
-                url=url, html="", metadata={}, success=False, error_message=str(e)
-            )
-
-        finally:
-            end_time = datetime.now()
-            if self.monitor:
-                self.monitor.update_task(
-                    task_id,
-                    end_time=end_time,
-                    memory_usage=memory_usage,
-                    peak_memory=peak_memory,
-                    error_message=error_message,
-                )
-
-        return CrawlerTaskResult(
-            task_id=task_id,
-            url=url,
-            result=result,
-            memory_usage=memory_usage,
-            peak_memory=peak_memory,
-            start_time=start_time,
-            end_time=end_time,
-            error_message=error_message,
-        )
-
-    async def run_urls(
-        self,
-        crawler: "AsyncWebCrawler",  # noqa: F821
-        urls: List[str],
-        config: CrawlerRunConfig,
-    ) -> List[CrawlerTaskResult]:
-        self.crawler = crawler
-        if self.monitor:
-            self.monitor.start()
-
-        try:
-            semaphore = asyncio.Semaphore(self.semaphore_count)
-            tasks = []
-
-            for url in urls:
-                task_id = str(uuid.uuid4())
-                if self.monitor:
-                    self.monitor.add_task(task_id, url)
-                task = asyncio.create_task(
-                    self.crawl_url(url, config, task_id, semaphore)
-                )
-                tasks.append(task)
-
-            return await asyncio.gather(*tasks, return_exceptions=True)
-        finally:
-            if self.monitor:
-                self.monitor.stop()

crawl4ai/async_logger.py

@@ -1,3 +1,4 @@
+from abc import ABC, abstractmethod
 from enum import Enum
 from typing import Optional, Dict, Any
 from colorama import Fore, Style, init
@@ -13,7 +14,37 @@ class LogLevel(Enum):
     ERROR = 5
 
 
-class AsyncLogger:
+
+class AsyncLoggerBase(ABC):
+    @abstractmethod
+    def debug(self, message: str, tag: str = "DEBUG", **kwargs):
+        pass
+
+    @abstractmethod
+    def info(self, message: str, tag: str = "INFO", **kwargs):
+        pass
+
+    @abstractmethod
+    def success(self, message: str, tag: str = "SUCCESS", **kwargs):
+        pass
+
+    @abstractmethod
+    def warning(self, message: str, tag: str = "WARNING", **kwargs):
+        pass
+
+    @abstractmethod
+    def error(self, message: str, tag: str = "ERROR", **kwargs):
+        pass
+
+    @abstractmethod
+    def url_status(self, url: str, success: bool, timing: float, tag: str = "FETCH", url_length: int = 50):
+        pass
+
+    @abstractmethod
+    def error_status(self, url: str, error: str, tag: str = "ERROR", url_length: int = 50):
+        pass
+
+class AsyncLogger(AsyncLoggerBase):
     """
     Asynchronous logger with support for colored console output and file logging.
     Supports templated messages with colored components.
@@ -225,3 +256,55 @@ class AsyncLogger:
             tag=tag,
             params={"url": url, "url_length": url_length, "error": error},
         )
+
+class AsyncFileLogger(AsyncLoggerBase):
+    """
+    File-only asynchronous logger that writes logs to a specified file.
+    """
+
+    def __init__(self, log_file: str):
+        """
+        Initialize the file logger.
+
+        Args:
+            log_file: File path for logging
+        """
+        self.log_file = log_file
+        os.makedirs(os.path.dirname(os.path.abspath(log_file)), exist_ok=True)
+
+    def _write_to_file(self, level: str, message: str, tag: str):
+        """Write a message to the log file."""
+        timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]
+        with open(self.log_file, "a", encoding="utf-8") as f:
+            f.write(f"[{timestamp}] [{level}] [{tag}] {message}\n")
+
+    def debug(self, message: str, tag: str = "DEBUG", **kwargs):
+        """Log a debug message to file."""
+        self._write_to_file("DEBUG", message, tag)
+
+    def info(self, message: str, tag: str = "INFO", **kwargs):
+        """Log an info message to file."""
+        self._write_to_file("INFO", message, tag)
+
+    def success(self, message: str, tag: str = "SUCCESS", **kwargs):
+        """Log a success message to file."""
+        self._write_to_file("SUCCESS", message, tag)
+
+    def warning(self, message: str, tag: str = "WARNING", **kwargs):
+        """Log a warning message to file."""
+        self._write_to_file("WARNING", message, tag)
+
+    def error(self, message: str, tag: str = "ERROR", **kwargs):
+        """Log an error message to file."""
+        self._write_to_file("ERROR", message, tag)
+
+    def url_status(self, url: str, success: bool, timing: float, tag: str = "FETCH", url_length: int = 50):
+        """Log URL fetch status to file."""
+        status = "SUCCESS" if success else "FAILED"
+        message = f"{url[:url_length]}... | Status: {status} | Time: {timing:.2f}s"
+        self._write_to_file("URL_STATUS", message, tag)
+
+    def error_status(self, url: str, error: str, tag: str = "ERROR", url_length: int = 50):
+        """Log error status to file."""
+        message = f"{url[:url_length]}... | Error: {error}"
+        self._write_to_file("ERROR", message, tag)

crawl4ai/async_webcrawler.py

@@ -1,16 +1,16 @@
+from .__version__ import __version__ as crawl4ai_version
 import os
 import sys
 import time
-import warnings
 from colorama import Fore
 from pathlib import Path
-from typing import Optional, List
+from typing import Optional, List, Generic, TypeVar
 import json
 import asyncio
 
 # from contextlib import nullcontext, asynccontextmanager
 from contextlib import asynccontextmanager
-from .models import CrawlResult, MarkdownGenerationResult, CrawlerTaskResult, DispatchResult
+from .models import CrawlResult, MarkdownGenerationResult, DispatchResult, ScrapingResult
 from .async_database import async_db_manager
 from .chunking_strategy import *  # noqa: F403
 from .chunking_strategy import RegexChunking, ChunkingStrategy, IdentityChunking
@@ -23,12 +23,13 @@ from .async_crawler_strategy import (
     AsyncPlaywrightCrawlerStrategy,
     AsyncCrawlResponse,
 )
-from .cache_context import CacheMode, CacheContext, _legacy_to_cache_mode
+from .cache_context import CacheMode, CacheContext
 from .markdown_generation_strategy import (
     DefaultMarkdownGenerator,
     MarkdownGenerationStrategy,
 )
-from .async_logger import AsyncLogger
+from .deep_crawling import DeepCrawlDecorator
+from .async_logger import AsyncLogger, AsyncLoggerBase
 from .async_configs import BrowserConfig, CrawlerRunConfig
 from .async_dispatcher import * # noqa: F403
 from .async_dispatcher import BaseDispatcher, MemoryAdaptiveDispatcher, RateLimiter
@@ -43,13 +44,44 @@ from .utils import (
     RobotsParser,
 )
 
-from typing import Union, AsyncGenerator, List, TypeVar
-from collections.abc import AsyncGenerator
+from typing import Union, AsyncGenerator
 
 CrawlResultT = TypeVar('CrawlResultT', bound=CrawlResult)
-RunManyReturn = Union[List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]
+# RunManyReturn = Union[CrawlResultT, List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]
+
+class CrawlResultContainer(Generic[CrawlResultT]):
+    def __init__(self, results: Union[CrawlResultT, List[CrawlResultT]]):
+        # Normalize to a list
+        if isinstance(results, list):
+            self._results = results
+        else:
+            self._results = [results]
+
+    def __iter__(self):
+        return iter(self._results)
+
+    def __getitem__(self, index):
+        return self._results[index]
+
+    def __len__(self):
+        return len(self._results)
+
+    def __getattr__(self, attr):
+        # Delegate attribute access to the first element.
+        if self._results:
+            return getattr(self._results[0], attr)
+        raise AttributeError(f"{self.__class__.__name__} object has no attribute '{attr}'")
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self._results!r})"
+
+# Redefine the union type. Now synchronous calls always return a container,
+# while stream mode is handled with an AsyncGenerator.
+RunManyReturn = Union[
+    CrawlResultContainer[CrawlResultT],
+    AsyncGenerator[CrawlResultT, None]
+]
 
-from .__version__ import __version__ as crawl4ai_version
 
 
 class AsyncWebCrawler:
@@ -76,31 +108,21 @@ class AsyncWebCrawler:
         await crawler.close()
         ```
 
-    Migration Guide:
-    Old way (deprecated):
-        crawler = AsyncWebCrawler(always_by_pass_cache=True, browser_type="chromium", headless=True)
-
-    New way (recommended):
-        browser_config = BrowserConfig(browser_type="chromium", headless=True)
-        crawler = AsyncWebCrawler(config=browser_config)
-
-
     Attributes:
         browser_config (BrowserConfig): Configuration object for browser settings.
         crawler_strategy (AsyncCrawlerStrategy): Strategy for crawling web pages.
         logger (AsyncLogger): Logger instance for recording events and errors.
-        always_bypass_cache (bool): Whether to always bypass cache.
         crawl4ai_folder (str): Directory for storing cache.
         base_directory (str): Base directory for storing cache.
         ready (bool): Whether the crawler is ready for use.
 
-        Methods:
-            start(): Start the crawler explicitly without using context manager.
-            close(): Close the crawler explicitly without using context manager.
-            arun(): Run the crawler for a single source: URL (web, local file, or raw HTML).
-            awarmup(): Perform warmup sequence.
-            arun_many(): Run the crawler for multiple sources.
-            aprocess_html(): Process HTML content.
+    Methods:
+        start(): Start the crawler explicitly without using context manager.
+        close(): Close the crawler explicitly without using context manager.
+        arun(): Run the crawler for a single source: URL (web, local file, or raw HTML).
+        awarmup(): Perform warmup sequence.
+        arun_many(): Run the crawler for multiple sources.
+        aprocess_html(): Process HTML content.
 
     Typical Usage:
         async with AsyncWebCrawler() as crawler:
@@ -121,81 +143,43 @@ class AsyncWebCrawler:
 
     def __init__(
         self,
-        crawler_strategy: Optional[AsyncCrawlerStrategy] = None,
-        config: Optional[BrowserConfig] = None,
-        always_bypass_cache: bool = False,
-        always_by_pass_cache: Optional[bool] = None,  # Deprecated parameter
+        crawler_strategy: AsyncCrawlerStrategy = None,
+        config: BrowserConfig = None,
         base_directory: str = str(os.getenv("CRAWL4_AI_BASE_DIRECTORY", Path.home())),
         thread_safe: bool = False,
+        logger: AsyncLoggerBase = None,
         **kwargs,
     ):
         """
         Initialize the AsyncWebCrawler.
 
         Args:
-            crawler_strategy: Strategy for crawling web pages. If None, will create AsyncPlaywrightCrawlerStrategy
-            config: Configuration object for browser settings. If None, will be created from kwargs
-            always_bypass_cache: Whether to always bypass cache (new parameter)
-            always_by_pass_cache: Deprecated, use always_bypass_cache instead
+            crawler_strategy: Strategy for crawling web pages. Default AsyncPlaywrightCrawlerStrategy
+            config: Configuration object for browser settings. Default BrowserConfig()
             base_directory: Base directory for storing cache
             thread_safe: Whether to use thread-safe operations
             **kwargs: Additional arguments for backwards compatibility
         """
         # Handle browser configuration
-        browser_config = config
-        if browser_config is not None:
-            if any(
-                k in kwargs
-                for k in [
-                    "browser_type",
-                    "headless",
-                    "viewport_width",
-                    "viewport_height",
-                ]
-            ):
-                self.logger.warning(
-                    message="Both browser_config and legacy browser parameters provided. browser_config will take precedence.",
-                    tag="WARNING",
-                )
-        else:
-            # Create browser config from kwargs for backwards compatibility
-            browser_config = BrowserConfig.from_kwargs(kwargs)
+        browser_config = config or BrowserConfig()
 
         self.browser_config = browser_config
 
         # Initialize logger first since other components may need it
-        self.logger = AsyncLogger(
+        self.logger = logger or AsyncLogger(
             log_file=os.path.join(base_directory, ".crawl4ai", "crawler.log"),
             verbose=self.browser_config.verbose,
             tag_width=10,
         )
 
         # Initialize crawler strategy
-        params = {k: v for k, v in kwargs.items() if k in ["browser_congig", "logger"]}
+        params = {k: v for k, v in kwargs.items() if k in ["browser_config", "logger"]}
         self.crawler_strategy = crawler_strategy or AsyncPlaywrightCrawlerStrategy(
             browser_config=browser_config,
             logger=self.logger,
             **params,  # Pass remaining kwargs for backwards compatibility
         )
 
-        # If craweler strategy doesnt have logger, use crawler logger
-        if not self.crawler_strategy.logger:
-            self.crawler_strategy.logger = self.logger
-
-        # Handle deprecated cache parameter
-        if always_by_pass_cache is not None:
-            if kwargs.get("warning", True):
-                warnings.warn(
-                    "'always_by_pass_cache' is deprecated and will be removed in version 0.5.0. "
-                    "Use 'always_bypass_cache' instead. "
-                    "Pass warning=False to suppress this warning.",
-                    DeprecationWarning,
-                    stacklevel=2,
-                )
-            self.always_bypass_cache = always_by_pass_cache
-        else:
-            self.always_bypass_cache = always_bypass_cache
-
         # Thread safety setup
         self._lock = asyncio.Lock() if thread_safe else None
 
@@ -209,6 +193,10 @@ class AsyncWebCrawler:
 
         self.ready = False
 
+        # Decorate arun method with deep crawling capabilities
+        self._deep_handler = DeepCrawlDecorator(self)
+        self.arun = self._deep_handler(self.arun)  
+
     async def start(self):
         """
         Start the crawler explicitly without using context manager.
@@ -263,26 +251,9 @@ class AsyncWebCrawler:
     async def arun(
         self,
         url: str,
-        config: Optional[CrawlerRunConfig] = None,
-        # Legacy parameters maintained for backwards compatibility
-        word_count_threshold=MIN_WORD_THRESHOLD,
-        extraction_strategy: ExtractionStrategy = None,
-        chunking_strategy: ChunkingStrategy = RegexChunking(),
-        content_filter: RelevantContentFilter = None,
-        cache_mode: Optional[CacheMode] = None,
-        # Deprecated cache parameters
-        bypass_cache: bool = False,
-        disable_cache: bool = False,
-        no_cache_read: bool = False,
-        no_cache_write: bool = False,
-        # Other legacy parameters
-        css_selector: str = None,
-        screenshot: bool = False,
-        pdf: bool = False,
-        user_agent: str = None,
-        verbose=True,
+        config: CrawlerRunConfig = None,
         **kwargs,
-    ) -> CrawlResult:
+    ) -> RunManyReturn:
         """
         Runs the crawler for a single source: URL (web, local file, or raw HTML).
 
@@ -311,61 +282,13 @@ class AsyncWebCrawler:
         Returns:
             CrawlResult: The result of crawling and processing
         """
-        crawler_config = config
+        config = config or CrawlerRunConfig()
         if not isinstance(url, str) or not url:
             raise ValueError("Invalid URL, make sure the URL is a non-empty string")
 
         async with self._lock or self.nullcontext():
             try:
-                # Handle configuration
-                if crawler_config is not None:
-                    # if any(param is not None for param in [
-                    #     word_count_threshold, extraction_strategy, chunking_strategy,
-                    #     content_filter, cache_mode, css_selector, screenshot, pdf
-                    # ]):
-                    #     self.logger.warning(
-                    #         message="Both crawler_config and legacy parameters provided. crawler_config will take precedence.",
-                    #         tag="WARNING"
-                    #     )
-                    config = crawler_config
-                else:
-                    # Merge all parameters into a single kwargs dict for config creation
-                    config_kwargs = {
-                        "word_count_threshold": word_count_threshold,
-                        "extraction_strategy": extraction_strategy,
-                        "chunking_strategy": chunking_strategy,
-                        "content_filter": content_filter,
-                        "cache_mode": cache_mode,
-                        "bypass_cache": bypass_cache,
-                        "disable_cache": disable_cache,
-                        "no_cache_read": no_cache_read,
-                        "no_cache_write": no_cache_write,
-                        "css_selector": css_selector,
-                        "screenshot": screenshot,
-                        "pdf": pdf,
-                        "verbose": verbose,
-                        **kwargs,
-                    }
-                    config = CrawlerRunConfig.from_kwargs(config_kwargs)
-
-                # Handle deprecated cache parameters
-                if any([bypass_cache, disable_cache, no_cache_read, no_cache_write]):
-                    if kwargs.get("warning", True):
-                        warnings.warn(
-                            "Cache control boolean flags are deprecated and will be removed in version 0.5.0. "
-                            "Use 'cache_mode' parameter instead.",
-                            DeprecationWarning,
-                            stacklevel=2,
-                        )
-
-                    # Convert legacy parameters if cache_mode not provided
-                    if config.cache_mode is None:
-                        config.cache_mode = _legacy_to_cache_mode(
-                            disable_cache=disable_cache,
-                            bypass_cache=bypass_cache,
-                            no_cache_read=no_cache_read,
-                            no_cache_write=no_cache_write,
-                        )
+                self.logger.verbose = config.verbose
 
                 # Default to ENABLED if no cache mode specified
                 if config.cache_mode is None:
@@ -373,7 +296,7 @@ class AsyncWebCrawler:
 
                 # Create cache context
                 cache_context = CacheContext(
-                    url, config.cache_mode, self.always_bypass_cache
+                    url, config.cache_mode, False
                 )
 
                 # Initialize processing variables
@@ -401,7 +324,11 @@ class AsyncWebCrawler:
                     # If screenshot is requested but its not in cache, then set cache_result to None
                     screenshot_data = cached_result.screenshot
                     pdf_data = cached_result.pdf
-                    if config.screenshot and not screenshot or config.pdf and not pdf:
+                    # if config.screenshot and not screenshot or config.pdf and not pdf:
+                    if config.screenshot and not screenshot_data:
+                        cached_result = None
+                    
+                    if config.pdf and not pdf_data:
                         cached_result = None
 
                     self.logger.url_status(
@@ -411,12 +338,24 @@ class AsyncWebCrawler:
                         tag="FETCH",
                     )
 
+                # Update proxy configuration from rotation strategy if available
+                if config and config.proxy_rotation_strategy:
+                    next_proxy = await config.proxy_rotation_strategy.get_next_proxy()
+                    if next_proxy:
+                        self.logger.info(
+                            message="Switch proxy: {proxy}",
+                            tag="PROXY",
+                            params={"proxy": next_proxy.server},
+                        )
+                        config.proxy_config = next_proxy
+                        # config = config.clone(proxy_config=next_proxy)
+
                 # Fetch fresh content if needed
                 if not cached_result or not html:
                     t1 = time.perf_counter()
 
-                    if user_agent:
-                        self.crawler_strategy.update_user_agent(user_agent)
+                    if config.user_agent:
+                        self.crawler_strategy.update_user_agent(config.user_agent)
 
                     # Check robots.txt if enabled
                     if config and config.check_robots_txt:
@@ -430,7 +369,9 @@ class AsyncWebCrawler:
                                 response_headers={"X-Robots-Status": "Blocked by robots.txt"}
                             )
 
-                    # Pass config to crawl method
+                    ##############################
+                    # Call CrawlerStrategy.crawl #
+                    ##############################
                     async_response = await self.crawler_strategy.crawl(
                         url,
                         config=config,  # Pass the entire config object
@@ -439,6 +380,7 @@ class AsyncWebCrawler:
                     html = sanitize_input_encode(async_response.html)
                     screenshot_data = async_response.screenshot
                     pdf_data = async_response.pdf_data
+                    js_execution_result = async_response.js_execution_result
 
                     t2 = time.perf_counter()
                     self.logger.url_status(
@@ -448,7 +390,9 @@ class AsyncWebCrawler:
                         tag="FETCH",
                     )
 
-                    # Process the HTML content
+                    ###############################################################
+                    # Process the HTML content, Call CrawlerStrategy.process_html #
+                    ###############################################################
                     crawl_result : CrawlResult = await self.aprocess_html(
                         url=url,
                         html=html,
@@ -465,30 +409,11 @@ class AsyncWebCrawler:
                     crawl_result.redirected_url = async_response.redirected_url or url
                     crawl_result.response_headers = async_response.response_headers
                     crawl_result.downloaded_files = async_response.downloaded_files
+                    crawl_result.js_execution_result = js_execution_result
                     crawl_result.ssl_certificate = (
                         async_response.ssl_certificate
                     )  # Add SSL certificate
 
-                    # # Check and set values from async_response to crawl_result
-                    # try:
-                    #     for key in vars(async_response):
-                    #         if hasattr(crawl_result, key):
-                    #             value = getattr(async_response, key, None)
-                    #             current_value = getattr(crawl_result, key, None)
-                    #             if value is not None and not current_value:
-                    #                 try:
-                    #                     setattr(crawl_result, key, value)
-                    #                 except Exception as e:
-                    #                     self.logger.warning(
-                    #                         message=f"Failed to set attribute {key}: {str(e)}",
-                    #                         tag="WARNING"
-                    #                     )
-                    # except Exception as e:
-                    #     self.logger.warning(
-                    #         message=f"Error copying response attributes: {str(e)}",
-                    #         tag="WARNING"
-                    #     )
-
                     crawl_result.success = bool(html)
                     crawl_result.session_id = getattr(config, "session_id", None)
 
@@ -510,7 +435,7 @@ class AsyncWebCrawler:
                     if cache_context.should_write() and not bool(cached_result):
                         await async_db_manager.acache_url(crawl_result)
 
-                    return crawl_result
+                    return CrawlResultContainer(crawl_result)
 
                 else:
                     self.logger.success(
@@ -527,7 +452,7 @@ class AsyncWebCrawler:
                     cached_result.success = bool(html)
                     cached_result.session_id = getattr(config, "session_id", None)
                     cached_result.redirected_url = cached_result.redirected_url or url
-                    return cached_result
+                    return CrawlResultContainer(cached_result)
 
             except Exception as e:
                 error_context = get_error_context(sys.exc_info())
@@ -538,8 +463,6 @@ class AsyncWebCrawler:
                     f"Error: {str(e)}\n\n"
                     f"Code context:\n{error_context['code_context']}"
                 )
-                # if not hasattr(e, "msg"):
-                #     e.msg = str(e)
 
                 self.logger.error_status(
                     url=url,
@@ -547,8 +470,10 @@ class AsyncWebCrawler:
                     tag="ERROR",
                 )
 
-                return CrawlResult(
-                    url=url, html="", success=False, error_message=error_message
+                return  CrawlResultContainer(
+                    CrawlResult(
+                        url=url, html="", success=False, error_message=error_message
+                    )
                 )
 
     async def aprocess_html(
@@ -578,6 +503,7 @@ class AsyncWebCrawler:
         Returns:
             CrawlResult: Processed result containing extracted and formatted content
         """
+        cleaned_html = ""
         try:
             _url = url if not kwargs.get("is_raw_html", False) else "Raw HTML"
             t1 = time.perf_counter()
@@ -588,11 +514,16 @@ class AsyncWebCrawler:
                 scraping_strategy.logger = self.logger
 
             # Process HTML content
-            params = {k: v for k, v in config.to_dict().items() if k not in ["url"]}
+            params = config.__dict__.copy()
+            params.pop("url", None)            
             # add keys from kwargs to params that doesn't exist in params
             params.update({k: v for k, v in kwargs.items() if k not in params.keys()})
 
-            result = scraping_strategy.scrap(url, html, **params)
+            
+            ################################
+            # Scraping Strategy Execution  #
+            ################################
+            result : ScrapingResult = scraping_strategy.scrap(url, html, **params)
 
             if result is None:
                 raise ValueError(
@@ -618,7 +549,9 @@ class AsyncWebCrawler:
             links = result.links.model_dump()
             metadata = result.metadata
 
-        # Markdown Generation
+        ################################
+        # Generate Markdown            #
+        ################################
         markdown_generator: Optional[MarkdownGenerationStrategy] = (
             config.markdown_generator or DefaultMarkdownGenerator()
         )
@@ -634,24 +567,23 @@ class AsyncWebCrawler:
                 # html2text_options=kwargs.get('html2text', {})
             )
         )
-        markdown_v2 = markdown_result
-        markdown = sanitize_input_encode(markdown_result.raw_markdown)
 
         # Log processing completion
         self.logger.info(
-            message="Processed {url:.50}... | Time: {timing}ms",
+            message="{url:.50}... | Time: {timing}s",
             tag="SCRAPE",
-            params={"url": _url, "timing": int((time.perf_counter() - t1) * 1000)},
+            params={"url": _url, "timing": int((time.perf_counter() - t1) * 1000) / 1000},
         )
 
-        # Handle content extraction if needed
+        ################################
+        # Structured Content Extraction           #
+        ################################
         if (
             not bool(extracted_content)
             and config.extraction_strategy
             and not isinstance(config.extraction_strategy, NoExtractionStrategy)
         ):
             t1 = time.perf_counter()
-
             # Choose content based on input_format
             content_format = config.extraction_strategy.input_format
             if content_format == "fit_markdown" and not markdown_result.fit_markdown:
@@ -663,15 +595,16 @@ class AsyncWebCrawler:
                 content_format = "markdown"
 
             content = {
-                "markdown": markdown,
+                "markdown": markdown_result.raw_markdown,
                 "html": html,
-                "fit_markdown": markdown_result.raw_markdown,
-            }.get(content_format, markdown)
+                "cleaned_html": cleaned_html,
+                "fit_markdown": markdown_result.fit_markdown,
+            }.get(content_format, markdown_result.raw_markdown)
 
             # Use IdentityChunking for HTML input, otherwise use provided chunking strategy
             chunking = (
                 IdentityChunking()
-                if content_format == "html"
+                if content_format in ["html", "cleaned_html"]
                 else config.chunking_strategy
             )
             sections = chunking.chunk(content)
@@ -700,10 +633,7 @@ class AsyncWebCrawler:
             url=url,
             html=html,
             cleaned_html=cleaned_html,
-            markdown_v2=markdown_v2,
-            markdown=markdown,
-            fit_markdown=markdown_result.fit_markdown,
-            fit_html=markdown_result.fit_html,
+            markdown=markdown_result,
             media=media,
             links=links,
             metadata=metadata,
@@ -720,17 +650,17 @@ class AsyncWebCrawler:
         config: Optional[CrawlerRunConfig] = None, 
         dispatcher: Optional[BaseDispatcher] = None,
         # Legacy parameters maintained for backwards compatibility
-        word_count_threshold=MIN_WORD_THRESHOLD,
-        extraction_strategy: ExtractionStrategy = None,
-        chunking_strategy: ChunkingStrategy = RegexChunking(),
-        content_filter: RelevantContentFilter = None,
-        cache_mode: Optional[CacheMode] = None,
-        bypass_cache: bool = False,
-        css_selector: str = None,
-        screenshot: bool = False,
-        pdf: bool = False,
-        user_agent: str = None,
-        verbose=True,
+        # word_count_threshold=MIN_WORD_THRESHOLD,
+        # extraction_strategy: ExtractionStrategy = None,
+        # chunking_strategy: ChunkingStrategy = RegexChunking(),
+        # content_filter: RelevantContentFilter = None,
+        # cache_mode: Optional[CacheMode] = None,
+        # bypass_cache: bool = False,
+        # css_selector: str = None,
+        # screenshot: bool = False,
+        # pdf: bool = False,
+        # user_agent: str = None,
+        # verbose=True,
         **kwargs
         ) -> RunManyReturn:
         """
@@ -763,20 +693,21 @@ class AsyncWebCrawler:
         ):
             print(f"Processed {result.url}: {len(result.markdown)} chars")
         """
-        if config is None:
-            config = CrawlerRunConfig(
-                word_count_threshold=word_count_threshold,
-                extraction_strategy=extraction_strategy,
-                chunking_strategy=chunking_strategy,
-                content_filter=content_filter,
-                cache_mode=cache_mode,
-                bypass_cache=bypass_cache,
-                css_selector=css_selector,
-                screenshot=screenshot,
-                pdf=pdf,
-                verbose=verbose,
-                **kwargs,
-            )
+        config = config or CrawlerRunConfig()
+        # if config is None:
+        #     config = CrawlerRunConfig(
+        #         word_count_threshold=word_count_threshold,
+        #         extraction_strategy=extraction_strategy,
+        #         chunking_strategy=chunking_strategy,
+        #         content_filter=content_filter,
+        #         cache_mode=cache_mode,
+        #         bypass_cache=bypass_cache,
+        #         css_selector=css_selector,
+        #         screenshot=screenshot,
+        #         pdf=pdf,
+        #         verbose=verbose,
+        #         **kwargs,
+        #     )
 
         if dispatcher is None:
             dispatcher = MemoryAdaptiveDispatcher(
@@ -785,18 +716,19 @@ class AsyncWebCrawler:
                 ),
             )
 
-        transform_result = lambda task_result: (
-            setattr(task_result.result, 'dispatch_result', 
-                DispatchResult(
-                    task_id=task_result.task_id,
-                    memory_usage=task_result.memory_usage,
-                    peak_memory=task_result.peak_memory,
-                    start_time=task_result.start_time,
-                    end_time=task_result.end_time,
-                    error_message=task_result.error_message,
+        def transform_result(task_result):
+            return (
+                    setattr(task_result.result, 'dispatch_result', 
+                        DispatchResult(
+                            task_id=task_result.task_id,
+                            memory_usage=task_result.memory_usage,
+                            peak_memory=task_result.peak_memory,
+                            start_time=task_result.start_time,
+                            end_time=task_result.end_time,
+                            error_message=task_result.error_message,
+                        )
+                    ) or task_result.result
                 )
-            ) or task_result.result
-        )
 
         stream = config.stream
         

crawl4ai/browser_manager.py

@@ -0,0 +1,880 @@
+import asyncio
+import time
+from typing import List, Optional
+import os
+import sys
+import shutil
+import tempfile
+import subprocess
+from playwright.async_api import BrowserContext
+import hashlib
+from .js_snippet import load_js_script
+from .config import DOWNLOAD_PAGE_TIMEOUT
+from .async_configs import BrowserConfig, CrawlerRunConfig
+from playwright_stealth import StealthConfig
+from .utils import get_chromium_path
+
+stealth_config = StealthConfig(
+    webdriver=True,
+    chrome_app=True,
+    chrome_csi=True,
+    chrome_load_times=True,
+    chrome_runtime=True,
+    navigator_languages=True,
+    navigator_plugins=True,
+    navigator_permissions=True,
+    webgl_vendor=True,
+    outerdimensions=True,
+    navigator_hardware_concurrency=True,
+    media_codecs=True,
+)
+
+BROWSER_DISABLE_OPTIONS = [
+    "--disable-background-networking",
+    "--disable-background-timer-throttling",
+    "--disable-backgrounding-occluded-windows",
+    "--disable-breakpad",
+    "--disable-client-side-phishing-detection",
+    "--disable-component-extensions-with-background-pages",
+    "--disable-default-apps",
+    "--disable-extensions",
+    "--disable-features=TranslateUI",
+    "--disable-hang-monitor",
+    "--disable-ipc-flooding-protection",
+    "--disable-popup-blocking",
+    "--disable-prompt-on-repost",
+    "--disable-sync",
+    "--force-color-profile=srgb",
+    "--metrics-recording-only",
+    "--no-first-run",
+    "--password-store=basic",
+    "--use-mock-keychain",
+]
+
+
+class ManagedBrowser:
+    """
+    Manages the browser process and context. This class allows to connect to the browser using CDP protocol.
+
+    Attributes:
+        browser_type (str): The type of browser to launch. Supported values: "chromium", "firefox", "webkit".
+                            Default: "chromium".
+        user_data_dir (str or None): Path to a user data directory for persistent sessions. If None, a
+                                     temporary directory may be used. Default: None.
+        headless (bool): Whether to run the browser in headless mode (no visible GUI).
+                         Default: True.
+        browser_process (subprocess.Popen): The process object for the browser.
+        temp_dir (str): Temporary directory for user data if not provided.
+        debugging_port (int): Port for debugging the browser.
+        host (str): Host for debugging the browser.
+
+        Methods:
+            start(): Starts the browser process and returns the CDP endpoint URL.
+            _get_browser_path(): Returns the browser executable path based on OS and browser type.
+            _get_browser_args(): Returns browser-specific command line arguments.
+            _get_user_data_dir(): Returns the user data directory path.
+            _cleanup(): Terminates the browser process and removes the temporary directory.
+            create_profile(): Static method to create a user profile by launching a browser for user interaction.
+    """
+
+    browser_type: str
+    user_data_dir: str
+    headless: bool
+    browser_process: subprocess.Popen
+    temp_dir: str
+    debugging_port: int
+    host: str
+
+    def __init__(
+        self,
+        browser_type: str = "chromium",
+        user_data_dir: Optional[str] = None,
+        headless: bool = False,
+        logger=None,
+        host: str = "localhost",
+        debugging_port: int = 9222,
+        cdp_url: Optional[str] = None, 
+    ):
+        """
+        Initialize the ManagedBrowser instance.
+
+        Args:
+            browser_type (str): The type of browser to launch. Supported values: "chromium", "firefox", "webkit".
+                                Default: "chromium".
+            user_data_dir (str or None): Path to a user data directory for persistent sessions. If None, a
+                                         temporary directory may be used. Default: None.
+            headless (bool): Whether to run the browser in headless mode (no visible GUI).
+                             Default: True.
+            logger (logging.Logger): Logger instance for logging messages. Default: None.
+            host (str): Host for debugging the browser. Default: "localhost".
+            debugging_port (int): Port for debugging the browser. Default: 9222.
+            cdp_url (str or None): CDP URL to connect to the browser. Default: None.
+        """
+        self.browser_type = browser_type
+        self.user_data_dir = user_data_dir
+        self.headless = headless
+        self.browser_process = None
+        self.temp_dir = None
+        self.debugging_port = debugging_port
+        self.host = host
+        self.logger = logger
+        self.shutting_down = False
+        self.cdp_url = cdp_url
+
+    async def start(self) -> str:
+        """
+        Starts the browser process or returns CDP endpoint URL.
+        If cdp_url is provided, returns it directly.
+        If user_data_dir is not provided for local browser, creates a temporary directory.
+        
+        Returns:
+            str: CDP endpoint URL
+        """
+        # If CDP URL provided, just return it
+        if self.cdp_url:
+            return self.cdp_url
+
+        # Create temp dir if needed
+        if not self.user_data_dir:
+            self.temp_dir = tempfile.mkdtemp(prefix="browser-profile-")
+            self.user_data_dir = self.temp_dir
+
+        # Get browser path and args based on OS and browser type
+        # browser_path = self._get_browser_path()
+        args = await self._get_browser_args()
+
+        # Start browser process
+        try:
+            self.browser_process = subprocess.Popen(
+                args, stdout=subprocess.PIPE, stderr=subprocess.PIPE
+            )
+            # Monitor browser process output for errors
+            asyncio.create_task(self._monitor_browser_process())
+            await asyncio.sleep(2)  # Give browser time to start
+            return f"http://{self.host}:{self.debugging_port}"
+        except Exception as e:
+            await self.cleanup()
+            raise Exception(f"Failed to start browser: {e}")
+
+    async def _monitor_browser_process(self):
+        """
+        Monitor the browser process for unexpected termination.
+
+        How it works:
+        1. Read stdout and stderr from the browser process.
+        2. If the process has terminated, log the error message and terminate the browser.
+        3. If the shutting_down flag is set, log the normal termination message.
+        4. If any other error occurs, log the error message.
+
+        Note: This method should be called in a separate task to avoid blocking the main event loop.
+        """
+        if self.browser_process:
+            try:
+                stdout, stderr = await asyncio.gather(
+                    asyncio.to_thread(self.browser_process.stdout.read),
+                    asyncio.to_thread(self.browser_process.stderr.read),
+                )
+
+                # Check shutting_down flag BEFORE logging anything
+                if self.browser_process.poll() is not None:
+                    if not self.shutting_down:
+                        self.logger.error(
+                            message="Browser process terminated unexpectedly | Code: {code} | STDOUT: {stdout} | STDERR: {stderr}",
+                            tag="ERROR",
+                            params={
+                                "code": self.browser_process.returncode,
+                                "stdout": stdout.decode(),
+                                "stderr": stderr.decode(),
+                            },
+                        )
+                        await self.cleanup()
+                    else:
+                        self.logger.info(
+                            message="Browser process terminated normally | Code: {code}",
+                            tag="INFO",
+                            params={"code": self.browser_process.returncode},
+                        )
+            except Exception as e:
+                if not self.shutting_down:
+                    self.logger.error(
+                        message="Error monitoring browser process: {error}",
+                        tag="ERROR",
+                        params={"error": str(e)},
+                    )
+
+    def _get_browser_path_WIP(self) -> str:
+        """Returns the browser executable path based on OS and browser type"""
+        if sys.platform == "darwin":  # macOS
+            paths = {
+                "chromium": "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome",
+                "firefox": "/Applications/Firefox.app/Contents/MacOS/firefox",
+                "webkit": "/Applications/Safari.app/Contents/MacOS/Safari",
+            }
+        elif sys.platform == "win32":  # Windows
+            paths = {
+                "chromium": "C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe",
+                "firefox": "C:\\Program Files\\Mozilla Firefox\\firefox.exe",
+                "webkit": None,  # WebKit not supported on Windows
+            }
+        else:  # Linux
+            paths = {
+                "chromium": "google-chrome",
+                "firefox": "firefox",
+                "webkit": None,  # WebKit not supported on Linux
+            }
+
+        return paths.get(self.browser_type)
+
+    async def _get_browser_path(self) -> str:
+        browser_path = await get_chromium_path(self.browser_type)
+        return browser_path
+
+    async def _get_browser_args(self) -> List[str]:
+        """Returns browser-specific command line arguments"""
+        base_args = [await self._get_browser_path()]
+
+        if self.browser_type == "chromium":
+            args = [
+                f"--remote-debugging-port={self.debugging_port}",
+                f"--user-data-dir={self.user_data_dir}",
+            ]
+            if self.headless:
+                args.append("--headless=new")
+        elif self.browser_type == "firefox":
+            args = [
+                "--remote-debugging-port",
+                str(self.debugging_port),
+                "--profile",
+                self.user_data_dir,
+            ]
+            if self.headless:
+                args.append("--headless")
+        else:
+            raise NotImplementedError(f"Browser type {self.browser_type} not supported")
+
+        return base_args + args
+
+    async def cleanup(self):
+        """Cleanup browser process and temporary directory"""
+        # Set shutting_down flag BEFORE any termination actions
+        self.shutting_down = True
+
+        if self.browser_process:
+            try:
+                self.browser_process.terminate()
+                # Wait for process to end gracefully
+                for _ in range(10):  # 10 attempts, 100ms each
+                    if self.browser_process.poll() is not None:
+                        break
+                    await asyncio.sleep(0.1)
+
+                # Force kill if still running
+                if self.browser_process.poll() is None:
+                    self.browser_process.kill()
+                    await asyncio.sleep(0.1)  # Brief wait for kill to take effect
+
+            except Exception as e:
+                self.logger.error(
+                    message="Error terminating browser: {error}",
+                    tag="ERROR",
+                    params={"error": str(e)},
+                )
+
+        if self.temp_dir and os.path.exists(self.temp_dir):
+            try:
+                shutil.rmtree(self.temp_dir)
+            except Exception as e:
+                self.logger.error(
+                    message="Error removing temporary directory: {error}",
+                    tag="ERROR",
+                    params={"error": str(e)},
+                )
+                
+    # These methods have been moved to BrowserProfiler class
+    @staticmethod
+    async def create_profile(browser_config=None, profile_name=None, logger=None):
+        """
+        This method has been moved to the BrowserProfiler class.
+        
+        Creates a browser profile by launching a browser for interactive user setup
+        and waits until the user closes it. The profile is stored in a directory that
+        can be used later with BrowserConfig.user_data_dir.
+        
+        Please use BrowserProfiler.create_profile() instead.
+        
+        Example:
+            ```python
+            from crawl4ai.browser_profiler import BrowserProfiler
+            
+            profiler = BrowserProfiler()
+            profile_path = await profiler.create_profile(profile_name="my-login-profile")
+            ```
+        """
+        from .browser_profiler import BrowserProfiler
+        
+        # Create a BrowserProfiler instance and delegate to it
+        profiler = BrowserProfiler(logger=logger)
+        return await profiler.create_profile(profile_name=profile_name, browser_config=browser_config)
+    
+    @staticmethod
+    def list_profiles():
+        """
+        This method has been moved to the BrowserProfiler class.
+        
+        Lists all available browser profiles in the Crawl4AI profiles directory.
+        
+        Please use BrowserProfiler.list_profiles() instead.
+        
+        Example:
+            ```python
+            from crawl4ai.browser_profiler import BrowserProfiler
+            
+            profiler = BrowserProfiler()
+            profiles = profiler.list_profiles()
+            ```
+        """
+        from .browser_profiler import BrowserProfiler
+        
+        # Create a BrowserProfiler instance and delegate to it
+        profiler = BrowserProfiler()
+        return profiler.list_profiles()
+        
+    @staticmethod
+    def delete_profile(profile_name_or_path):
+        """
+        This method has been moved to the BrowserProfiler class.
+        
+        Delete a browser profile by name or path.
+        
+        Please use BrowserProfiler.delete_profile() instead.
+        
+        Example:
+            ```python
+            from crawl4ai.browser_profiler import BrowserProfiler
+            
+            profiler = BrowserProfiler()
+            success = profiler.delete_profile("my-profile")
+            ```
+        """
+        from .browser_profiler import BrowserProfiler
+        
+        # Create a BrowserProfiler instance and delegate to it
+        profiler = BrowserProfiler()
+        return profiler.delete_profile(profile_name_or_path)
+
+
+
+
+class BrowserManager:
+    """
+    Manages the browser instance and context.
+
+    Attributes:
+        config (BrowserConfig): Configuration object containing all browser settings
+        logger: Logger instance for recording events and errors
+        browser (Browser): The browser instance
+        default_context (BrowserContext): The default browser context
+        managed_browser (ManagedBrowser): The managed browser instance
+        playwright (Playwright): The Playwright instance
+        sessions (dict): Dictionary to store session information
+        session_ttl (int): Session timeout in seconds
+    """
+    
+
+    def __init__(self, browser_config: BrowserConfig, logger=None):
+        """
+        Initialize the BrowserManager with a browser configuration.
+
+        Args:
+            browser_config (BrowserConfig): Configuration object containing all browser settings
+            logger: Logger instance for recording events and errors
+        """
+        self.config: BrowserConfig = browser_config
+        self.logger = logger
+
+        # Browser state
+        self.browser = None
+        self.default_context = None
+        self.managed_browser = None
+        self.playwright = None
+
+        # Session management
+        self.sessions = {}
+        self.session_ttl = 1800  # 30 minutes
+
+        # Keep track of contexts by a "config signature," so each unique config reuses a single context
+        self.contexts_by_config = {}
+        self._contexts_lock = asyncio.Lock() 
+
+        # Initialize ManagedBrowser if needed
+        if self.config.use_managed_browser:
+            self.managed_browser = ManagedBrowser(
+                browser_type=self.config.browser_type,
+                user_data_dir=self.config.user_data_dir,
+                headless=self.config.headless,
+                logger=self.logger,
+                debugging_port=self.config.debugging_port,
+                cdp_url=self.config.cdp_url,
+            )
+
+    async def start(self):
+        """
+        Start the browser instance and set up the default context.
+
+        How it works:
+        1. Check if Playwright is already initialized.
+        2. If not, initialize Playwright.
+        3. If managed browser is used, start it and connect to the CDP endpoint.
+        4. If managed browser is not used, launch the browser and set up the default context.
+
+        Note: This method should be called in a separate task to avoid blocking the main event loop.
+        """
+        if self.playwright is None:
+            from playwright.async_api import async_playwright
+
+            self.playwright = await async_playwright().start()
+
+        if self.config.cdp_url or self.config.use_managed_browser:
+            self.config.use_managed_browser = True
+            cdp_url = await self.managed_browser.start() if not self.config.cdp_url else self.config.cdp_url
+            self.browser = await self.playwright.chromium.connect_over_cdp(cdp_url)
+            contexts = self.browser.contexts
+            if contexts:
+                self.default_context = contexts[0]
+            else:
+                self.default_context = await self.create_browser_context()
+                # self.default_context = await self.browser.new_context(
+                #     viewport={
+                #         "width": self.config.viewport_width,
+                #         "height": self.config.viewport_height,
+                #     },
+                #     storage_state=self.config.storage_state,
+                #     user_agent=self.config.headers.get(
+                #         "User-Agent", self.config.user_agent
+                #     ),
+                #     accept_downloads=self.config.accept_downloads,
+                #     ignore_https_errors=self.config.ignore_https_errors,
+                #     java_script_enabled=self.config.java_script_enabled,
+                # )
+            await self.setup_context(self.default_context)
+        else:
+            browser_args = self._build_browser_args()
+
+            # Launch appropriate browser type
+            if self.config.browser_type == "firefox":
+                self.browser = await self.playwright.firefox.launch(**browser_args)
+            elif self.config.browser_type == "webkit":
+                self.browser = await self.playwright.webkit.launch(**browser_args)
+            else:
+                self.browser = await self.playwright.chromium.launch(**browser_args)
+
+            self.default_context = self.browser
+
+    def _build_browser_args(self) -> dict:
+        """Build browser launch arguments from config."""
+        args = [
+            "--disable-gpu",
+            "--disable-gpu-compositing",
+            "--disable-software-rasterizer",
+            "--no-sandbox",
+            "--disable-dev-shm-usage",
+            "--no-first-run",
+            "--no-default-browser-check",
+            "--disable-infobars",
+            "--window-position=0,0",
+            "--ignore-certificate-errors",
+            "--ignore-certificate-errors-spki-list",
+            "--disable-blink-features=AutomationControlled",
+            "--window-position=400,0",
+            "--disable-renderer-backgrounding",
+            "--disable-ipc-flooding-protection",
+            "--force-color-profile=srgb",
+            "--mute-audio",
+            "--disable-background-timer-throttling",
+            # "--single-process",
+            f"--window-size={self.config.viewport_width},{self.config.viewport_height}",
+        ]
+
+        if self.config.light_mode:
+            args.extend(BROWSER_DISABLE_OPTIONS)
+
+        if self.config.text_mode:
+            args.extend(
+                [
+                    "--blink-settings=imagesEnabled=false",
+                    "--disable-remote-fonts",
+                    "--disable-images",
+                    "--disable-javascript",
+                    "--disable-software-rasterizer",
+                    "--disable-dev-shm-usage",
+                ]
+            )
+
+        if self.config.extra_args:
+            args.extend(self.config.extra_args)
+
+        browser_args = {"headless": self.config.headless, "args": args}
+
+        if self.config.chrome_channel:
+            browser_args["channel"] = self.config.chrome_channel
+
+        if self.config.accept_downloads:
+            browser_args["downloads_path"] = self.config.downloads_path or os.path.join(
+                os.getcwd(), "downloads"
+            )
+            os.makedirs(browser_args["downloads_path"], exist_ok=True)
+
+        if self.config.proxy or self.config.proxy_config:
+            from playwright.async_api import ProxySettings
+
+            proxy_settings = (
+                ProxySettings(server=self.config.proxy)
+                if self.config.proxy
+                else ProxySettings(
+                    server=self.config.proxy_config.server,
+                    username=self.config.proxy_config.username,
+                    password=self.config.proxy_config.password,
+                )
+            )
+            browser_args["proxy"] = proxy_settings
+
+        return browser_args
+
+    async def setup_context(
+        self,
+        context: BrowserContext,
+        crawlerRunConfig: CrawlerRunConfig = None,
+        is_default=False,
+    ):
+        """
+        Set up a browser context with the configured options.
+
+        How it works:
+        1. Set extra HTTP headers if provided.
+        2. Add cookies if provided.
+        3. Load storage state if provided.
+        4. Accept downloads if enabled.
+        5. Set default timeouts for navigation and download.
+        6. Set user agent if provided.
+        7. Set browser hints if provided.
+        8. Set proxy if provided.
+        9. Set downloads path if provided.
+        10. Set storage state if provided.
+        11. Set cache if provided.
+        12. Set extra HTTP headers if provided.
+        13. Add cookies if provided.
+        14. Set default timeouts for navigation and download if enabled.
+        15. Set user agent if provided.
+        16. Set browser hints if provided.
+
+        Args:
+            context (BrowserContext): The browser context to set up
+            crawlerRunConfig (CrawlerRunConfig): Configuration object containing all browser settings
+            is_default (bool): Flag indicating if this is the default context
+        Returns:
+            None
+        """
+        if self.config.headers:
+            await context.set_extra_http_headers(self.config.headers)
+
+        if self.config.cookies:
+            await context.add_cookies(self.config.cookies)
+
+        if self.config.storage_state:
+            await context.storage_state(path=None)
+
+        if self.config.accept_downloads:
+            context.set_default_timeout(DOWNLOAD_PAGE_TIMEOUT)
+            context.set_default_navigation_timeout(DOWNLOAD_PAGE_TIMEOUT)
+            if self.config.downloads_path:
+                context._impl_obj._options["accept_downloads"] = True
+                context._impl_obj._options[
+                    "downloads_path"
+                ] = self.config.downloads_path
+
+        # Handle user agent and browser hints
+        if self.config.user_agent:
+            combined_headers = {
+                "User-Agent": self.config.user_agent,
+                "sec-ch-ua": self.config.browser_hint,
+            }
+            combined_headers.update(self.config.headers)
+            await context.set_extra_http_headers(combined_headers)
+
+        # Add default cookie
+        await context.add_cookies(
+            [
+                {
+                    "name": "cookiesEnabled",
+                    "value": "true",
+                    "url": crawlerRunConfig.url
+                    if crawlerRunConfig
+                    else "https://crawl4ai.com/",
+                }
+            ]
+        )
+
+        # Handle navigator overrides
+        if crawlerRunConfig:
+            if (
+                crawlerRunConfig.override_navigator
+                or crawlerRunConfig.simulate_user
+                or crawlerRunConfig.magic
+            ):
+                await context.add_init_script(load_js_script("navigator_overrider"))        
+
+    async def create_browser_context(self, crawlerRunConfig: CrawlerRunConfig = None):
+        """
+        Creates and returns a new browser context with configured settings.
+        Applies text-only mode settings if text_mode is enabled in config.
+
+        Returns:
+            Context: Browser context object with the specified configurations
+        """
+        # Base settings
+        user_agent = self.config.headers.get("User-Agent", self.config.user_agent) 
+        viewport_settings = {
+            "width": self.config.viewport_width,
+            "height": self.config.viewport_height,
+        }
+        proxy_settings = {"server": self.config.proxy} if self.config.proxy else None
+
+        blocked_extensions = [
+            # Images
+            "jpg",
+            "jpeg",
+            "png",
+            "gif",
+            "webp",
+            "svg",
+            "ico",
+            "bmp",
+            "tiff",
+            "psd",
+            # Fonts
+            "woff",
+            "woff2",
+            "ttf",
+            "otf",
+            "eot",
+            # Styles
+            # 'css', 'less', 'scss', 'sass',
+            # Media
+            "mp4",
+            "webm",
+            "ogg",
+            "avi",
+            "mov",
+            "wmv",
+            "flv",
+            "m4v",
+            "mp3",
+            "wav",
+            "aac",
+            "m4a",
+            "opus",
+            "flac",
+            # Documents
+            "pdf",
+            "doc",
+            "docx",
+            "xls",
+            "xlsx",
+            "ppt",
+            "pptx",
+            # Archives
+            "zip",
+            "rar",
+            "7z",
+            "tar",
+            "gz",
+            # Scripts and data
+            "xml",
+            "swf",
+            "wasm",
+        ]
+
+        # Common context settings
+        context_settings = {
+            "user_agent": user_agent,
+            "viewport": viewport_settings,
+            "proxy": proxy_settings,
+            "accept_downloads": self.config.accept_downloads,
+            "storage_state": self.config.storage_state,
+            "ignore_https_errors": self.config.ignore_https_errors,
+            "device_scale_factor": 1.0,
+            "java_script_enabled": self.config.java_script_enabled,
+        }
+        
+        if crawlerRunConfig:
+            # Check if there is value for crawlerRunConfig.proxy_config set add that to context
+            if crawlerRunConfig.proxy_config:
+                proxy_settings = {
+                    "server": crawlerRunConfig.proxy_config.server,
+                }
+                if crawlerRunConfig.proxy_config.username:
+                    proxy_settings.update({
+                        "username": crawlerRunConfig.proxy_config.username,
+                        "password": crawlerRunConfig.proxy_config.password,
+                    })
+                context_settings["proxy"] = proxy_settings
+
+        if self.config.text_mode:
+            text_mode_settings = {
+                "has_touch": False,
+                "is_mobile": False,
+            }
+            # Update context settings with text mode settings
+            context_settings.update(text_mode_settings)
+
+        # Create and return the context with all settings
+        context = await self.browser.new_context(**context_settings)
+
+        # Apply text mode settings if enabled
+        if self.config.text_mode:
+            # Create and apply route patterns for each extension
+            for ext in blocked_extensions:
+                await context.route(f"**/*.{ext}", lambda route: route.abort())
+        return context
+
+    def _make_config_signature(self, crawlerRunConfig: CrawlerRunConfig) -> str:
+        """
+        Converts the crawlerRunConfig into a dict, excludes ephemeral fields,
+        then returns a hash of the sorted JSON. This yields a stable signature
+        that identifies configurations requiring a unique browser context.
+        """
+        import json
+
+        config_dict = crawlerRunConfig.__dict__.copy()
+        # Exclude items that do not affect browser-level setup.
+        # Expand or adjust as needed, e.g. chunking_strategy is purely for data extraction, not for browser config.
+        ephemeral_keys = [
+            "session_id",
+            "js_code",
+            "scraping_strategy",
+            "extraction_strategy",
+            "chunking_strategy",
+            "cache_mode",
+            "content_filter",
+            "semaphore_count",
+            "url"
+        ]
+        for key in ephemeral_keys:
+            if key in config_dict:
+                del config_dict[key]
+        # Convert to canonical JSON string
+        signature_json = json.dumps(config_dict, sort_keys=True, default=str)
+
+        # Hash the JSON so we get a compact, unique string
+        signature_hash = hashlib.sha256(signature_json.encode("utf-8")).hexdigest()
+        return signature_hash
+
+    async def get_page(self, crawlerRunConfig: CrawlerRunConfig):
+        """
+        Get a page for the given session ID, creating a new one if needed.
+
+        Args:
+            crawlerRunConfig (CrawlerRunConfig): Configuration object containing all browser settings
+
+        Returns:
+            (page, context): The Page and its BrowserContext
+        """
+        self._cleanup_expired_sessions()
+
+        # If a session_id is provided and we already have it, reuse that page + context
+        if crawlerRunConfig.session_id and crawlerRunConfig.session_id in self.sessions:
+            context, page, _ = self.sessions[crawlerRunConfig.session_id]
+            # Update last-used timestamp
+            self.sessions[crawlerRunConfig.session_id] = (context, page, time.time())
+            return page, context
+
+        # If using a managed browser, just grab the shared default_context
+        if self.config.use_managed_browser:
+            context = self.default_context
+            pages = context.pages
+            page = next((p for p in pages if p.url == crawlerRunConfig.url), None)
+            if not page:
+                page = await context.new_page()
+        else:
+            # Otherwise, check if we have an existing context for this config
+            config_signature = self._make_config_signature(crawlerRunConfig)
+
+            async with self._contexts_lock:
+                if config_signature in self.contexts_by_config:
+                    context = self.contexts_by_config[config_signature]
+                else:
+                    # Create and setup a new context
+                    context = await self.create_browser_context(crawlerRunConfig)
+                    await self.setup_context(context, crawlerRunConfig)
+                    self.contexts_by_config[config_signature] = context
+
+            # Create a new page from the chosen context
+            page = await context.new_page()
+
+        # If a session_id is specified, store this session so we can reuse later
+        if crawlerRunConfig.session_id:
+            self.sessions[crawlerRunConfig.session_id] = (context, page, time.time())
+
+        return page, context
+
+    async def kill_session(self, session_id: str):
+        """
+        Kill a browser session and clean up resources.
+
+        Args:
+            session_id (str): The session ID to kill.
+        """
+        if session_id in self.sessions:
+            context, page, _ = self.sessions[session_id]
+            await page.close()
+            if not self.config.use_managed_browser:
+                await context.close()
+            del self.sessions[session_id]
+
+    def _cleanup_expired_sessions(self):
+        """Clean up expired sessions based on TTL."""
+        current_time = time.time()
+        expired_sessions = [
+            sid
+            for sid, (_, _, last_used) in self.sessions.items()
+            if current_time - last_used > self.session_ttl
+        ]
+        for sid in expired_sessions:
+            asyncio.create_task(self.kill_session(sid))
+
+    async def close(self):
+        """Close all browser resources and clean up."""
+        if self.config.cdp_url:
+            return
+        
+        if self.config.sleep_on_close:
+            await asyncio.sleep(0.5)
+
+        session_ids = list(self.sessions.keys())
+        for session_id in session_ids:
+            await self.kill_session(session_id)
+
+        # Now close all contexts we created. This reclaims memory from ephemeral contexts.
+        for ctx in self.contexts_by_config.values():
+            try:
+                await ctx.close()
+            except Exception as e:
+                self.logger.error(
+                    message="Error closing context: {error}",
+                    tag="ERROR",
+                    params={"error": str(e)}
+                )
+        self.contexts_by_config.clear()
+
+        if self.browser:
+            await self.browser.close()
+            self.browser = None
+
+        if self.managed_browser:
+            await asyncio.sleep(0.5)
+            await self.managed_browser.cleanup()
+            self.managed_browser = None
+
+        if self.playwright:
+            await self.playwright.stop()
+            self.playwright = None

crawl4ai/browser_profiler.py

@@ -0,0 +1,769 @@
+"""
+Browser Profiler Module
+
+This module provides a dedicated class for managing browser profiles
+that can be used for identity-based crawling with Crawl4AI.
+"""
+
+import os
+import asyncio
+import signal
+import sys
+import datetime
+import uuid
+import shutil
+from typing import List, Dict, Optional, Any
+from colorama import Fore, Style, init
+
+from .async_configs import BrowserConfig
+from .browser_manager import ManagedBrowser
+from .async_logger import AsyncLogger, AsyncLoggerBase
+from .utils import get_home_folder
+
+
+class BrowserProfiler:
+    """
+    A dedicated class for managing browser profiles for Crawl4AI.
+    
+    The BrowserProfiler allows you to:
+    - Create browser profiles interactively
+    - List available profiles
+    - Delete profiles when no longer needed
+    - Get profile paths for use in BrowserConfig
+    
+    Profiles are stored by default in ~/.crawl4ai/profiles/
+    """
+    
+    def __init__(self, logger: Optional[AsyncLoggerBase] = None):
+        """
+        Initialize the BrowserProfiler.
+        
+        Args:
+            logger (AsyncLoggerBase, optional): Logger for outputting messages.
+                If None, a default AsyncLogger will be created.
+        """
+        # Initialize colorama for colorful terminal output
+        init()
+        
+        # Create a logger if not provided
+        if logger is None:
+            self.logger = AsyncLogger(verbose=True)
+        elif not isinstance(logger, AsyncLoggerBase):
+            self.logger = AsyncLogger(verbose=True)
+        else:
+            self.logger = logger
+            
+        # Ensure profiles directory exists
+        self.profiles_dir = os.path.join(get_home_folder(), "profiles")
+        os.makedirs(self.profiles_dir, exist_ok=True)
+    
+    async def create_profile(self, 
+                            profile_name: Optional[str] = None, 
+                            browser_config: Optional[BrowserConfig] = None) -> Optional[str]:
+        """
+        Creates a browser profile by launching a browser for interactive user setup
+        and waits until the user closes it. The profile is stored in a directory that
+        can be used later with BrowserConfig.user_data_dir.
+        
+        Args:
+            profile_name (str, optional): Name for the profile directory.
+                If None, a name is generated based on timestamp.
+            browser_config (BrowserConfig, optional): Configuration for the browser.
+                If None, a default configuration is used with headless=False.
+                
+        Returns:
+            str: Path to the created profile directory, or None if creation failed
+            
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            
+            # Create a profile interactively
+            profile_path = await profiler.create_profile(
+                profile_name="my-login-profile"
+            )
+            
+            # Use the profile in a crawler
+            browser_config = BrowserConfig(
+                headless=True,
+                use_managed_browser=True,
+                user_data_dir=profile_path
+            )
+            
+            async with AsyncWebCrawler(config=browser_config) as crawler:
+                # The crawler will now use your profile with all your cookies and login state
+                result = await crawler.arun("https://example.com/dashboard")
+            ```
+        """
+        # Create default browser config if none provided
+        if browser_config is None:
+            from .async_configs import BrowserConfig
+            browser_config = BrowserConfig(
+                browser_type="chromium",
+                headless=False,  # Must be visible for user interaction
+                verbose=True
+            )
+        else:
+            # Ensure headless is False for user interaction
+            browser_config.headless = False
+            
+        # Generate profile name if not provided
+        if not profile_name:
+            timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
+            profile_name = f"profile_{timestamp}_{uuid.uuid4().hex[:6]}"
+            
+        # Sanitize profile name (replace spaces and special chars)
+        profile_name = "".join(c if c.isalnum() or c in "-_" else "_" for c in profile_name)
+        
+        # Set user data directory
+        profile_path = os.path.join(self.profiles_dir, profile_name)
+        os.makedirs(profile_path, exist_ok=True)
+        
+        # Print instructions for the user with colorama formatting
+        border = f"{Fore.CYAN}{'='*80}{Style.RESET_ALL}"
+        self.logger.info(f"\n{border}", tag="PROFILE")
+        self.logger.info(f"Creating browser profile: {Fore.GREEN}{profile_name}{Style.RESET_ALL}", tag="PROFILE")
+        self.logger.info(f"Profile directory: {Fore.YELLOW}{profile_path}{Style.RESET_ALL}", tag="PROFILE")
+        
+        self.logger.info("\nInstructions:", tag="PROFILE")
+        self.logger.info("1. A browser window will open for you to set up your profile.", tag="PROFILE")
+        self.logger.info(f"2. {Fore.CYAN}Log in to websites{Style.RESET_ALL}, configure settings, etc. as needed.", tag="PROFILE")
+        self.logger.info(f"3. When you're done, {Fore.YELLOW}press 'q' in this terminal{Style.RESET_ALL} to close the browser.", tag="PROFILE")
+        self.logger.info("4. The profile will be saved and ready to use with Crawl4AI.", tag="PROFILE")
+        self.logger.info(f"{border}\n", tag="PROFILE")
+        
+        # Create managed browser instance
+        managed_browser = ManagedBrowser(
+            browser_type=browser_config.browser_type,
+            user_data_dir=profile_path,
+            headless=False,  # Must be visible
+            logger=self.logger,
+            debugging_port=browser_config.debugging_port
+        )
+        
+        # Set up signal handlers to ensure cleanup on interrupt
+        original_sigint = signal.getsignal(signal.SIGINT)
+        original_sigterm = signal.getsignal(signal.SIGTERM)
+        
+        # Define cleanup handler for signals
+        async def cleanup_handler(sig, frame):
+            self.logger.warning("\nCleaning up browser process...", tag="PROFILE")
+            await managed_browser.cleanup()
+            # Restore original signal handlers
+            signal.signal(signal.SIGINT, original_sigint)
+            signal.signal(signal.SIGTERM, original_sigterm)
+            if sig == signal.SIGINT:
+                self.logger.error("Profile creation interrupted. Profile may be incomplete.", tag="PROFILE")
+                sys.exit(1)
+                
+        # Set signal handlers
+        def sigint_handler(sig, frame):
+            asyncio.create_task(cleanup_handler(sig, frame))
+        
+        signal.signal(signal.SIGINT, sigint_handler)
+        signal.signal(signal.SIGTERM, sigint_handler)
+        
+        # Event to signal when user is done with the browser
+        user_done_event = asyncio.Event()
+        
+        # Run keyboard input loop in a separate task
+        async def listen_for_quit_command():
+            import termios
+            import tty
+            import select
+            
+            # First output the prompt
+            self.logger.info(f"{Fore.CYAN}Press '{Fore.WHITE}q{Fore.CYAN}' when you've finished using the browser...{Style.RESET_ALL}", tag="PROFILE")
+            
+            # Save original terminal settings
+            fd = sys.stdin.fileno()
+            old_settings = termios.tcgetattr(fd)
+            
+            try:
+                # Switch to non-canonical mode (no line buffering)
+                tty.setcbreak(fd)
+                
+                while True:
+                    # Check if input is available (non-blocking)
+                    readable, _, _ = select.select([sys.stdin], [], [], 0.5)
+                    if readable:
+                        key = sys.stdin.read(1)
+                        if key.lower() == 'q':
+                            self.logger.info(f"{Fore.GREEN}Closing browser and saving profile...{Style.RESET_ALL}", tag="PROFILE")
+                            user_done_event.set()
+                            return
+                    
+                    # Check if the browser process has already exited
+                    if managed_browser.browser_process and managed_browser.browser_process.poll() is not None:
+                        self.logger.info("Browser already closed. Ending input listener.", tag="PROFILE")
+                        user_done_event.set()
+                        return
+                        
+                    await asyncio.sleep(0.1)
+            
+            finally:
+                # Restore terminal settings 
+                termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+        
+        try:
+            # Start the browser
+            await managed_browser.start()
+            
+            # Check if browser started successfully
+            browser_process = managed_browser.browser_process
+            if not browser_process:
+                self.logger.error("Failed to start browser process.", tag="PROFILE")
+                return None
+            
+            self.logger.info(f"Browser launched. {Fore.CYAN}Waiting for you to finish...{Style.RESET_ALL}", tag="PROFILE") 
+            
+            # Start listening for keyboard input
+            listener_task = asyncio.create_task(listen_for_quit_command())
+            
+            # Wait for either the user to press 'q' or for the browser process to exit naturally
+            while not user_done_event.is_set() and browser_process.poll() is None:
+                await asyncio.sleep(0.5)
+            
+            # Cancel the listener task if it's still running
+            if not listener_task.done():
+                listener_task.cancel()
+                try:
+                    await listener_task
+                except asyncio.CancelledError:
+                    pass
+            
+            # If the browser is still running and the user pressed 'q', terminate it
+            if browser_process.poll() is None and user_done_event.is_set():
+                self.logger.info("Terminating browser process...", tag="PROFILE")
+                await managed_browser.cleanup()
+            
+            self.logger.success(f"Browser closed. Profile saved at: {Fore.GREEN}{profile_path}{Style.RESET_ALL}", tag="PROFILE")
+                
+        except Exception as e:
+            self.logger.error(f"Error creating profile: {str(e)}", tag="PROFILE")
+            await managed_browser.cleanup()
+            return None
+        finally:
+            # Restore original signal handlers
+            signal.signal(signal.SIGINT, original_sigint)
+            signal.signal(signal.SIGTERM, original_sigterm)
+            
+            # Make sure browser is fully cleaned up
+            await managed_browser.cleanup()
+        
+        # Return the profile path
+        return profile_path
+    
+    def list_profiles(self) -> List[Dict[str, Any]]:
+        """
+        Lists all available browser profiles in the Crawl4AI profiles directory.
+        
+        Returns:
+            list: A list of dictionaries containing profile information:
+                  [{"name": "profile_name", "path": "/path/to/profile", "created": datetime, "type": "chromium|firefox"}]
+                  
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            
+            # List all available profiles
+            profiles = profiler.list_profiles()
+            
+            for profile in profiles:
+                print(f"Profile: {profile['name']}")
+                print(f"  Path: {profile['path']}")
+                print(f"  Created: {profile['created']}")
+                print(f"  Browser type: {profile['type']}")
+            ```
+        """
+        if not os.path.exists(self.profiles_dir):
+            return []
+            
+        profiles = []
+        
+        for name in os.listdir(self.profiles_dir):
+            profile_path = os.path.join(self.profiles_dir, name)
+            
+            # Skip if not a directory
+            if not os.path.isdir(profile_path):
+                continue
+                
+            # Check if this looks like a valid browser profile
+            # For Chromium: Look for Preferences file
+            # For Firefox: Look for prefs.js file
+            is_valid = False
+            
+            if os.path.exists(os.path.join(profile_path, "Preferences")) or \
+               os.path.exists(os.path.join(profile_path, "Default", "Preferences")):
+                is_valid = "chromium"
+            elif os.path.exists(os.path.join(profile_path, "prefs.js")):
+                is_valid = "firefox"
+                
+            if is_valid:
+                # Get creation time
+                created = datetime.datetime.fromtimestamp(
+                    os.path.getctime(profile_path)
+                )
+                
+                profiles.append({
+                    "name": name,
+                    "path": profile_path,
+                    "created": created,
+                    "type": is_valid
+                })
+                
+        # Sort by creation time, newest first
+        profiles.sort(key=lambda x: x["created"], reverse=True)
+        
+        return profiles
+    
+    def get_profile_path(self, profile_name: str) -> Optional[str]:
+        """
+        Get the full path to a profile by name.
+        
+        Args:
+            profile_name (str): Name of the profile (not the full path)
+            
+        Returns:
+            str: Full path to the profile directory, or None if not found
+            
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            
+            path = profiler.get_profile_path("my-profile")
+            if path:
+                print(f"Profile path: {path}")
+            else:
+                print("Profile not found")
+            ```
+        """
+        profile_path = os.path.join(self.profiles_dir, profile_name)
+        
+        # Check if path exists and is a valid profile
+        if not os.path.isdir(profile_path):
+            # Chrck if profile_name itself is full path
+            if os.path.isabs(profile_name):
+                profile_path = profile_name
+            else:
+                return None
+        
+        # Look for profile indicators
+        is_profile = (
+            os.path.exists(os.path.join(profile_path, "Preferences")) or
+            os.path.exists(os.path.join(profile_path, "Default", "Preferences")) or
+            os.path.exists(os.path.join(profile_path, "prefs.js"))
+        )
+        
+        if not is_profile:
+            return None  # Not a valid browser profile
+            
+        return profile_path
+    
+    def delete_profile(self, profile_name_or_path: str) -> bool:
+        """
+        Delete a browser profile by name or path.
+        
+        Args:
+            profile_name_or_path (str): Name of the profile or full path to profile directory
+            
+        Returns:
+            bool: True if the profile was deleted successfully, False otherwise
+            
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            
+            # Delete by name
+            success = profiler.delete_profile("my-profile")
+            
+            # Delete by path
+            success = profiler.delete_profile("/path/to/.crawl4ai/profiles/my-profile")
+            ```
+        """
+        # Determine if input is a name or a path
+        if os.path.isabs(profile_name_or_path):
+            # Full path provided
+            profile_path = profile_name_or_path
+        else:
+            # Just a name provided, construct path
+            profile_path = os.path.join(self.profiles_dir, profile_name_or_path)
+        
+        # Check if path exists and is a valid profile
+        if not os.path.isdir(profile_path):
+            return False
+            
+        # Look for profile indicators
+        is_profile = (
+            os.path.exists(os.path.join(profile_path, "Preferences")) or
+            os.path.exists(os.path.join(profile_path, "Default", "Preferences")) or
+            os.path.exists(os.path.join(profile_path, "prefs.js"))
+        )
+        
+        if not is_profile:
+            return False  # Not a valid browser profile
+            
+        # Delete the profile directory
+        try:
+            shutil.rmtree(profile_path)
+            return True
+        except Exception:
+            return False
+            
+    async def interactive_manager(self, crawl_callback=None):
+        """
+        Launch an interactive profile management console.
+        
+        Args:
+            crawl_callback (callable, optional): Function to call when selecting option to use 
+                a profile for crawling. It will be called with (profile_path, url).
+                
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            
+            # Define a custom crawl function
+            async def my_crawl_function(profile_path, url):
+                print(f"Crawling {url} with profile {profile_path}")
+                # Implement your crawling logic here
+                
+            # Start interactive manager
+            await profiler.interactive_manager(crawl_callback=my_crawl_function)
+            ```
+        """
+        while True:
+            self.logger.info(f"\n{Fore.CYAN}Profile Management Options:{Style.RESET_ALL}", tag="MENU")
+            self.logger.info(f"1. {Fore.GREEN}Create a new profile{Style.RESET_ALL}", tag="MENU")
+            self.logger.info(f"2. {Fore.YELLOW}List available profiles{Style.RESET_ALL}", tag="MENU")
+            self.logger.info(f"3. {Fore.RED}Delete a profile{Style.RESET_ALL}", tag="MENU")
+            
+            # Only show crawl option if callback provided
+            if crawl_callback:
+                self.logger.info(f"4. {Fore.CYAN}Use a profile to crawl a website{Style.RESET_ALL}", tag="MENU")
+                self.logger.info(f"5. {Fore.MAGENTA}Exit{Style.RESET_ALL}", tag="MENU")
+                exit_option = "5"
+            else:
+                self.logger.info(f"4. {Fore.MAGENTA}Exit{Style.RESET_ALL}", tag="MENU")
+                exit_option = "4"
+            
+            choice = input(f"\n{Fore.CYAN}Enter your choice (1-{exit_option}): {Style.RESET_ALL}")
+            
+            if choice == "1":
+                # Create new profile
+                name = input(f"{Fore.GREEN}Enter a name for the new profile (or press Enter for auto-generated name): {Style.RESET_ALL}")
+                await self.create_profile(name or None)
+                
+            elif choice == "2":
+                # List profiles
+                profiles = self.list_profiles()
+                
+                if not profiles:
+                    self.logger.warning("  No profiles found. Create one first with option 1.", tag="PROFILES")
+                    continue
+                
+                # Print profile information with colorama formatting
+                self.logger.info("\nAvailable profiles:", tag="PROFILES")
+                for i, profile in enumerate(profiles):
+                    self.logger.info(f"[{i+1}] {Fore.CYAN}{profile['name']}{Style.RESET_ALL}", tag="PROFILES")
+                    self.logger.info(f"    Path: {Fore.YELLOW}{profile['path']}{Style.RESET_ALL}", tag="PROFILES")
+                    self.logger.info(f"    Created: {profile['created'].strftime('%Y-%m-%d %H:%M:%S')}", tag="PROFILES")
+                    self.logger.info(f"    Browser type: {profile['type']}", tag="PROFILES")
+                    self.logger.info("", tag="PROFILES")  # Empty line for spacing
+                
+            elif choice == "3":
+                # Delete profile
+                profiles = self.list_profiles()
+                if not profiles:
+                    self.logger.warning("No profiles found to delete", tag="PROFILES")
+                    continue
+                    
+                # Display numbered list
+                self.logger.info(f"\n{Fore.YELLOW}Available profiles:{Style.RESET_ALL}", tag="PROFILES")
+                for i, profile in enumerate(profiles):
+                    self.logger.info(f"[{i+1}] {profile['name']}", tag="PROFILES")
+                    
+                # Get profile to delete
+                profile_idx = input(f"{Fore.RED}Enter the number of the profile to delete (or 'c' to cancel): {Style.RESET_ALL}")
+                if profile_idx.lower() == 'c':
+                    continue
+                    
+                try:
+                    idx = int(profile_idx) - 1
+                    if 0 <= idx < len(profiles):
+                        profile_name = profiles[idx]["name"]
+                        self.logger.info(f"Deleting profile: {Fore.YELLOW}{profile_name}{Style.RESET_ALL}", tag="PROFILES")
+                        
+                        # Confirm deletion
+                        confirm = input(f"{Fore.RED}Are you sure you want to delete this profile? (y/n): {Style.RESET_ALL}")
+                        if confirm.lower() == 'y':
+                            success = self.delete_profile(profiles[idx]["path"])
+                            
+                            if success:
+                                self.logger.success(f"Profile {Fore.GREEN}{profile_name}{Style.RESET_ALL} deleted successfully", tag="PROFILES")
+                            else:
+                                self.logger.error(f"Failed to delete profile {Fore.RED}{profile_name}{Style.RESET_ALL}", tag="PROFILES")
+                    else:
+                        self.logger.error("Invalid profile number", tag="PROFILES")
+                except ValueError:
+                    self.logger.error("Please enter a valid number", tag="PROFILES")
+                    
+            elif choice == "4" and crawl_callback:
+                # Use profile to crawl a site
+                profiles = self.list_profiles()
+                if not profiles:
+                    self.logger.warning("No profiles found. Create one first.", tag="PROFILES")
+                    continue
+                    
+                # Display numbered list
+                self.logger.info(f"\n{Fore.YELLOW}Available profiles:{Style.RESET_ALL}", tag="PROFILES")
+                for i, profile in enumerate(profiles):
+                    self.logger.info(f"[{i+1}] {profile['name']}", tag="PROFILES")
+                    
+                # Get profile to use
+                profile_idx = input(f"{Fore.CYAN}Enter the number of the profile to use (or 'c' to cancel): {Style.RESET_ALL}")
+                if profile_idx.lower() == 'c':
+                    continue
+                    
+                try:
+                    idx = int(profile_idx) - 1
+                    if 0 <= idx < len(profiles):
+                        profile_path = profiles[idx]["path"]
+                        url = input(f"{Fore.CYAN}Enter the URL to crawl: {Style.RESET_ALL}")
+                        if url:
+                            # Call the provided crawl callback
+                            await crawl_callback(profile_path, url)
+                        else:
+                            self.logger.error("No URL provided", tag="CRAWL")
+                    else:
+                        self.logger.error("Invalid profile number", tag="PROFILES")
+                except ValueError:
+                    self.logger.error("Please enter a valid number", tag="PROFILES")
+                    
+            elif choice == exit_option:
+                # Exit
+                self.logger.info("Exiting profile management", tag="MENU")
+                break
+                
+            else:
+                self.logger.error(f"Invalid choice. Please enter a number between 1 and {exit_option}.", tag="MENU")
+
+
+    async def launch_standalone_browser(self, 
+                                  browser_type: str = "chromium",
+                                  user_data_dir: Optional[str] = None,
+                                  debugging_port: int = 9222,
+                                  headless: bool = False) -> Optional[str]:
+        """
+        Launch a standalone browser with CDP debugging enabled and keep it running
+        until the user presses 'q'. Returns and displays the CDP URL.
+        
+        Args:
+            browser_type (str): Type of browser to launch ('chromium' or 'firefox')
+            user_data_dir (str, optional): Path to user profile directory
+            debugging_port (int): Port to use for CDP debugging
+            headless (bool): Whether to run in headless mode
+            
+        Returns:
+            str: CDP URL for the browser, or None if launch failed
+            
+        Example:
+            ```python
+            profiler = BrowserProfiler()
+            cdp_url = await profiler.launch_standalone_browser(
+                user_data_dir="/path/to/profile",
+                debugging_port=9222
+            )
+            # Use cdp_url to connect to the browser
+            ```
+        """
+        # Use the provided directory if specified, otherwise create a temporary directory
+        if user_data_dir:
+            # Directory is provided directly, ensure it exists
+            profile_path = user_data_dir
+            os.makedirs(profile_path, exist_ok=True)
+        else:
+            # Create a temporary profile directory
+            timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
+            profile_name = f"temp_{timestamp}_{uuid.uuid4().hex[:6]}"
+            profile_path = os.path.join(self.profiles_dir, profile_name)
+            os.makedirs(profile_path, exist_ok=True)
+        
+        # Print initial information
+        border = f"{Fore.CYAN}{'='*80}{Style.RESET_ALL}"
+        self.logger.info(f"\n{border}", tag="CDP")
+        self.logger.info(f"Launching standalone browser with CDP debugging", tag="CDP")
+        self.logger.info(f"Browser type: {Fore.GREEN}{browser_type}{Style.RESET_ALL}", tag="CDP")
+        self.logger.info(f"Profile path: {Fore.YELLOW}{profile_path}{Style.RESET_ALL}", tag="CDP")
+        self.logger.info(f"Debugging port: {Fore.CYAN}{debugging_port}{Style.RESET_ALL}", tag="CDP")
+        self.logger.info(f"Headless mode: {Fore.CYAN}{headless}{Style.RESET_ALL}", tag="CDP")
+        
+        # Create managed browser instance
+        managed_browser = ManagedBrowser(
+            browser_type=browser_type,
+            user_data_dir=profile_path,
+            headless=headless,
+            logger=self.logger,
+            debugging_port=debugging_port
+        )
+        
+        # Set up signal handlers to ensure cleanup on interrupt
+        original_sigint = signal.getsignal(signal.SIGINT)
+        original_sigterm = signal.getsignal(signal.SIGTERM)
+        
+        # Define cleanup handler for signals
+        async def cleanup_handler(sig, frame):
+            self.logger.warning("\nCleaning up browser process...", tag="CDP")
+            await managed_browser.cleanup()
+            # Restore original signal handlers
+            signal.signal(signal.SIGINT, original_sigint)
+            signal.signal(signal.SIGTERM, original_sigterm)
+            if sig == signal.SIGINT:
+                self.logger.error("Browser terminated by user.", tag="CDP")
+                sys.exit(1)
+                    
+        # Set signal handlers
+        def sigint_handler(sig, frame):
+            asyncio.create_task(cleanup_handler(sig, frame))
+        
+        signal.signal(signal.SIGINT, sigint_handler)
+        signal.signal(signal.SIGTERM, sigint_handler)
+        
+        # Event to signal when user wants to exit
+        user_done_event = asyncio.Event()
+        
+        # Run keyboard input loop in a separate task
+        async def listen_for_quit_command():
+            import termios
+            import tty
+            import select
+            
+            # First output the prompt
+            self.logger.info(f"{Fore.CYAN}Press '{Fore.WHITE}q{Fore.CYAN}' to stop the browser and exit...{Style.RESET_ALL}", tag="CDP")
+            
+            # Save original terminal settings
+            fd = sys.stdin.fileno()
+            old_settings = termios.tcgetattr(fd)
+            
+            try:
+                # Switch to non-canonical mode (no line buffering)
+                tty.setcbreak(fd)
+                
+                while True:
+                    # Check if input is available (non-blocking)
+                    readable, _, _ = select.select([sys.stdin], [], [], 0.5)
+                    if readable:
+                        key = sys.stdin.read(1)
+                        if key.lower() == 'q':
+                            self.logger.info(f"{Fore.GREEN}Closing browser...{Style.RESET_ALL}", tag="CDP")
+                            user_done_event.set()
+                            return
+                    
+                    # Check if the browser process has already exited
+                    if managed_browser.browser_process and managed_browser.browser_process.poll() is not None:
+                        self.logger.info("Browser already closed. Ending input listener.", tag="CDP")
+                        user_done_event.set()
+                        return
+                        
+                    await asyncio.sleep(0.1)
+            
+            finally:
+                # Restore terminal settings 
+                termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+                
+        # Function to retrieve and display CDP JSON config
+        async def get_cdp_json(port):
+            import aiohttp
+            cdp_url = f"http://localhost:{port}"
+            json_url = f"{cdp_url}/json/version"
+            
+            try:
+                async with aiohttp.ClientSession() as session:
+                    # Try multiple times in case the browser is still starting up
+                    for _ in range(10):
+                        try:
+                            async with session.get(json_url) as response:
+                                if response.status == 200:
+                                    data = await response.json()
+                                    return cdp_url, data
+                        except Exception:
+                            pass
+                        
+                        await asyncio.sleep(0.5)
+                    
+                    return cdp_url, None
+            except Exception as e:
+                self.logger.error(f"Error fetching CDP JSON: {str(e)}", tag="CDP")
+                return cdp_url, None
+        
+        cdp_url = None
+        config_json = None
+        
+        try:
+            # Start the browser
+            await managed_browser.start()
+            
+            # Check if browser started successfully
+            browser_process = managed_browser.browser_process
+            if not browser_process:
+                self.logger.error("Failed to start browser process.", tag="CDP")
+                return None
+            
+            self.logger.info(f"Browser launched successfully. Retrieving CDP information...", tag="CDP") 
+            
+            # Get CDP URL and JSON config
+            cdp_url, config_json = await get_cdp_json(debugging_port)
+            
+            if cdp_url:
+                self.logger.success(f"CDP URL: {Fore.GREEN}{cdp_url}{Style.RESET_ALL}", tag="CDP")
+                
+                if config_json:
+                    # Display relevant CDP information
+                    self.logger.info(f"Browser: {Fore.CYAN}{config_json.get('Browser', 'Unknown')}{Style.RESET_ALL}", tag="CDP")
+                    self.logger.info(f"Protocol Version: {config_json.get('Protocol-Version', 'Unknown')}", tag="CDP")
+                    if 'webSocketDebuggerUrl' in config_json:
+                        self.logger.info(f"WebSocket URL: {Fore.GREEN}{config_json['webSocketDebuggerUrl']}{Style.RESET_ALL}", tag="CDP")
+                else:
+                    self.logger.warning("Could not retrieve CDP configuration JSON", tag="CDP")
+            else:
+                self.logger.error(f"Failed to get CDP URL on port {debugging_port}", tag="CDP")
+                await managed_browser.cleanup()
+                return None
+            
+            # Start listening for keyboard input
+            listener_task = asyncio.create_task(listen_for_quit_command())
+            
+            # Wait for the user to press 'q' or for the browser process to exit naturally
+            while not user_done_event.is_set() and browser_process.poll() is None:
+                await asyncio.sleep(0.5)
+            
+            # Cancel the listener task if it's still running
+            if not listener_task.done():
+                listener_task.cancel()
+                try:
+                    await listener_task
+                except asyncio.CancelledError:
+                    pass
+            
+            # If the browser is still running and the user pressed 'q', terminate it
+            if browser_process.poll() is None and user_done_event.is_set():
+                self.logger.info("Terminating browser process...", tag="CDP")
+                await managed_browser.cleanup()
+            
+            self.logger.success(f"Browser closed.", tag="CDP")
+                
+        except Exception as e:
+            self.logger.error(f"Error launching standalone browser: {str(e)}", tag="CDP")
+            await managed_browser.cleanup()
+            return None
+        finally:
+            # Restore original signal handlers
+            signal.signal(signal.SIGINT, original_sigint)
+            signal.signal(signal.SIGTERM, original_sigterm)
+            
+            # Make sure browser is fully cleaned up
+            await managed_browser.cleanup()
+        
+        # Return the CDP URL
+        return cdp_url
+    
+

crawl4ai/chunking_strategy.py

@@ -4,7 +4,6 @@ from collections import Counter
 import string
 from .model_loader import load_nltk_punkt
 
-
 # Define the abstract base class for chunking strategies
 class ChunkingStrategy(ABC):
     """
@@ -72,6 +71,7 @@ class NlpSentenceChunking(ChunkingStrategy):
         """
         Initialize the NlpSentenceChunking object.
         """
+        from crawl4ai.le.legacy.model_loader import load_nltk_punkt
         load_nltk_punkt()
 
     def chunk(self, text: str) -> list:

crawl4ai/cli.py

@@ -1,123 +1,876 @@
 import click
+import os
 import sys
-import asyncio
-from typing import List
-from .docs_manager import DocsManager
-from .async_logger import AsyncLogger
+import time
 
-logger = AsyncLogger(verbose=True)
-docs_manager = DocsManager(logger)
+import humanize
+from typing import Dict, Any, Optional, List
+import json
+import yaml
+import anyio
+from rich.console import Console
+from rich.table import Table
+from rich.panel import Panel
+from rich.prompt import Prompt, Confirm
 
-
-def print_table(headers: List[str], rows: List[List[str]], padding: int = 2):
-    """Print formatted table with headers and rows"""
-    widths = [max(len(str(cell)) for cell in col) for col in zip(headers, *rows)]
-    border = "+" + "+".join("-" * (w + 2 * padding) for w in widths) + "+"
-
-    def format_row(row):
-        return (
-            "|"
-            + "|".join(
-                f"{' ' * padding}{str(cell):<{w}}{' ' * padding}"
-                for cell, w in zip(row, widths)
-            )
-            + "|"
-        )
-
-    click.echo(border)
-    click.echo(format_row(headers))
-    click.echo(border)
-    for row in rows:
-        click.echo(format_row(row))
-    click.echo(border)
-
-
-@click.group()
-def cli():
-    """Crawl4AI Command Line Interface"""
-    pass
-
-
-@cli.group()
-def docs():
-    """Documentation operations"""
-    pass
-
-
-@docs.command()
-@click.argument("sections", nargs=-1)
-@click.option(
-    "--mode", type=click.Choice(["extended", "condensed"]), default="extended"
+from crawl4ai import (
+    CacheMode,
+    AsyncWebCrawler, 
+    CrawlResult,
+    BrowserConfig, 
+    CrawlerRunConfig,
+    LLMExtractionStrategy, 
+    JsonCssExtractionStrategy,
+    JsonXPathExtractionStrategy,
+    BM25ContentFilter, 
+    PruningContentFilter,
+    BrowserProfiler,
+    LLMConfig
 )
-def combine(sections: tuple, mode: str):
-    """Combine documentation sections"""
+from litellm import completion
+from pathlib import Path
+
+
+# Initialize rich console
+console = Console()
+
+def get_global_config() -> dict:
+    config_dir = Path.home() / ".crawl4ai"
+    config_file = config_dir / "global.yml"
+    
+    if not config_file.exists():
+        config_dir.mkdir(parents=True, exist_ok=True)
+        return {}
+        
+    with open(config_file) as f:
+        return yaml.safe_load(f) or {}
+
+def save_global_config(config: dict):
+    config_file = Path.home() / ".crawl4ai" / "global.yml"
+    with open(config_file, "w") as f:
+        yaml.dump(config, f)
+
+def setup_llm_config() -> tuple[str, str]:
+    config = get_global_config()
+    provider = config.get("DEFAULT_LLM_PROVIDER")
+    token = config.get("DEFAULT_LLM_PROVIDER_TOKEN")
+    
+    if not provider:
+        click.echo("\nNo default LLM provider configured.")
+        click.echo("Provider format: 'company/model' (e.g., 'openai/gpt-4o', 'anthropic/claude-3-sonnet')")
+        click.echo("See available providers at: https://docs.litellm.ai/docs/providers")
+        provider = click.prompt("Enter provider")
+        
+    if not provider.startswith("ollama/"):
+        if not token:
+            token = click.prompt("Enter API token for " + provider, hide_input=True)
+    else:
+        token = "no-token"
+    
+    if not config.get("DEFAULT_LLM_PROVIDER") or not config.get("DEFAULT_LLM_PROVIDER_TOKEN"):
+        config["DEFAULT_LLM_PROVIDER"] = provider
+        config["DEFAULT_LLM_PROVIDER_TOKEN"] = token
+        save_global_config(config)
+        click.echo("\nConfiguration saved to ~/.crawl4ai/global.yml")
+    
+    return provider, token
+
+async def stream_llm_response(url: str, markdown: str, query: str, provider: str, token: str):
+    response = completion(
+        model=provider,
+        api_key=token,
+        messages=[
+            {
+                "content": f"You are Crawl4ai assistant, answering user question based on the provided context which is crawled from {url}.",
+                "role": "system"
+            },
+            {
+                "content": f"<|start of context|>\n{markdown}\n<|end of context|>\n\n{query}",
+                "role": "user"
+            },
+        ],
+        stream=True,
+    )
+    
+    for chunk in response:
+        if content := chunk["choices"][0]["delta"].get("content"):
+            print(content, end="", flush=True)
+    print()  # New line at end
+
+
+
+def parse_key_values(ctx, param, value) -> Dict[str, Any]:
+    if not value:
+        return {}
+    result = {}
+    pairs = value.split(',')
+    for pair in pairs:
+        try:
+            k, v = pair.split('=', 1)
+            # Handle common value types 
+            if v.lower() == 'true': v = True
+            elif v.lower() == 'false': v = False
+            elif v.isdigit(): v = int(v)
+            elif v.replace('.','',1).isdigit(): v = float(v)
+            elif v.startswith('[') and v.endswith(']'):
+                v = [x.strip() for x in v[1:-1].split(',') if x.strip()]
+            elif v.startswith('{') and v.endswith('}'):
+                try:
+                    v = json.loads(v)
+                except json.JSONDecodeError:
+                    raise click.BadParameter(f'Invalid JSON object: {v}')
+            result[k.strip()] = v
+        except ValueError:
+            raise click.BadParameter(f'Invalid key=value pair: {pair}')
+    return result
+
+def load_config_file(path: Optional[str]) -> dict:
+    if not path:
+        return {}
+    
     try:
-        asyncio.run(docs_manager.ensure_docs_exist())
-        click.echo(docs_manager.generate(sections, mode))
+        with open(path) as f:
+            if path.endswith((".yaml", ".yml")):
+                return yaml.safe_load(f)
+            return json.load(f)
     except Exception as e:
-        logger.error(str(e), tag="ERROR")
-        sys.exit(1)
+        raise click.BadParameter(f'Error loading config file {path}: {str(e)}')
 
+def load_schema_file(path: Optional[str]) -> dict:
+    if not path:
+        return None
+    return load_config_file(path)
 
-@docs.command()
-@click.argument("query")
-@click.option("--top-k", "-k", default=5)
-@click.option("--build-index", is_flag=True, help="Build index if missing")
-def search(query: str, top_k: int, build_index: bool):
-    """Search documentation"""
-    try:
-        result = docs_manager.search(query, top_k)
-        if result == "No search index available. Call build_search_index() first.":
-            if build_index or click.confirm("No search index found. Build it now?"):
-                asyncio.run(docs_manager.llm_text.generate_index_files())
-                result = docs_manager.search(query, top_k)
-        click.echo(result)
-    except Exception as e:
-        click.echo(f"Error: {str(e)}", err=True)
-        sys.exit(1)
+async def run_crawler(url: str, browser_cfg: BrowserConfig, crawler_cfg: CrawlerRunConfig, verbose: bool):
+    if verbose:
+        click.echo("Starting crawler with configurations:")
+        click.echo(f"Browser config: {browser_cfg.dump()}")
+        click.echo(f"Crawler config: {crawler_cfg.dump()}")
 
+    async with AsyncWebCrawler(config=browser_cfg) as crawler:
+        try:
+            result = await crawler.arun(url=url, config=crawler_cfg)
+            return result
+        except Exception as e:
+            raise click.ClickException(f"Crawling failed: {str(e)}")
 
-@docs.command()
-def update():
-    """Update docs from GitHub"""
-    try:
-        asyncio.run(docs_manager.fetch_docs())
-        click.echo("Documentation updated successfully")
-    except Exception as e:
-        click.echo(f"Error: {str(e)}", err=True)
-        sys.exit(1)
+def show_examples():
+    examples = """
+🚀 Crawl4AI CLI Examples
 
+1️⃣  Basic Usage:
+    # Simple crawl with default settings
+    crwl https://example.com
 
-@docs.command()
-@click.option("--force-facts", is_flag=True, help="Force regenerate fact files")
-@click.option("--clear-cache", is_flag=True, help="Clear BM25 cache")
-def index(force_facts: bool, clear_cache: bool):
-    """Build or rebuild search indexes"""
-    try:
-        asyncio.run(docs_manager.ensure_docs_exist())
-        asyncio.run(
-            docs_manager.llm_text.generate_index_files(
-                force_generate_facts=force_facts, clear_bm25_cache=clear_cache
-            )
+    # Get markdown output
+    crwl https://example.com -o markdown
+
+    # Verbose JSON output with cache bypass
+    crwl https://example.com -o json -v --bypass-cache
+
+2️⃣  Using Config Files:
+    # Using browser and crawler configs
+    crwl https://example.com -B browser.yml -C crawler.yml
+
+    # CSS-based extraction
+    crwl https://example.com -e extract_css.yml -s css_schema.json -o json
+
+    # LLM-based extraction
+    crwl https://example.com -e extract_llm.yml -s llm_schema.json -o json
+
+3️⃣  Direct Parameters:
+    # Browser settings
+    crwl https://example.com -b "headless=true,viewport_width=1280,user_agent_mode=random"
+
+    # Crawler settings
+    crwl https://example.com -c "css_selector=#main,delay_before_return_html=2,scan_full_page=true"
+
+4️⃣  Profile Management for Identity-Based Crawling:
+    # Launch interactive profile manager
+    crwl profiles
+
+    # Create, list, and delete browser profiles for identity-based crawling
+    # Use a profile for crawling (keeps you logged in)
+    crwl https://example.com -p my-profile-name
+
+    # Example: Crawl a site that requires login
+    # 1. First create a profile and log in:
+    crwl profiles
+    # 2. Then use that profile to crawl the authenticated site:
+    crwl https://site-requiring-login.com/dashboard -p my-profile-name
+
+5️⃣  CDP Mode for Browser Automation:
+    # Launch browser with CDP debugging on default port 9222
+    crwl cdp
+
+    # Use a specific profile and custom port
+    crwl cdp -p my-profile -P 9223
+
+    # Launch headless browser with CDP enabled
+    crwl cdp --headless
+
+    # Launch in incognito mode (ignores profile)
+    crwl cdp --incognito
+
+    # Use the CDP URL with other tools (Puppeteer, Playwright, etc.)
+    # The URL will be displayed in the terminal when the browser starts
+
+    
+6️⃣  Sample Config Files:
+
+browser.yml:
+    headless: true
+    viewport_width: 1280
+    user_agent_mode: "random"
+    verbose: true
+    ignore_https_errors: true
+
+extract_css.yml:
+    type: "json-css"
+    params:
+        verbose: true
+
+css_schema.json:
+    {
+      "name": "ArticleExtractor",
+      "baseSelector": ".article",
+      "fields": [
+        {
+          "name": "title",
+          "selector": "h1.title",
+          "type": "text"
+        },
+        {
+          "name": "link",
+          "selector": "a.read-more",
+          "type": "attribute",
+          "attribute": "href"
+        }
+      ]
+    }
+
+extract_llm.yml:
+    type: "llm"
+    provider: "openai/gpt-4"
+    instruction: "Extract all articles with their titles and links"
+    api_token: "your-token"
+    params:
+        temperature: 0.3
+        max_tokens: 1000
+
+llm_schema.json:
+    {
+      "title": "Article",
+      "type": "object",
+      "properties": {
+        "title": {
+          "type": "string",
+          "description": "The title of the article"
+        },
+        "link": {
+          "type": "string",
+          "description": "URL to the full article"
+        }
+      }
+    }
+
+7️⃣  Advanced Usage:
+    # Combine configs with direct parameters
+    crwl https://example.com -B browser.yml -b "headless=false,viewport_width=1920"
+
+    # Full extraction pipeline
+    crwl https://example.com \\
+        -B browser.yml \\
+        -C crawler.yml \\
+        -e extract_llm.yml \\
+        -s llm_schema.json \\
+        -o json \\
+        -v
+
+    # Content filtering with BM25
+    crwl https://example.com \\
+        -f filter_bm25.yml \\
+        -o markdown-fit
+
+    # Authenticated crawling with profile
+    crwl https://login-required-site.com \\
+        -p my-authenticated-profile \\
+        -c "css_selector=.dashboard-content" \\
+        -o markdown
+
+For more documentation visit: https://github.com/unclecode/crawl4ai
+
+8️⃣  Q&A with LLM:
+    # Ask a question about the content
+    crwl https://example.com -q "What is the main topic discussed?"
+
+    # First view content, then ask questions
+    crwl https://example.com -o markdown  # See the crawled content first
+    crwl https://example.com -q "Summarize the key points"
+    crwl https://example.com -q "What are the conclusions?"
+
+    # Advanced crawling with Q&A
+    crwl https://example.com \\
+        -B browser.yml \\
+        -c "css_selector=article,scan_full_page=true" \\
+        -q "What are the pros and cons mentioned?"
+
+    Note: First time using -q will prompt for LLM provider and API token.
+    These will be saved in ~/.crawl4ai/global.yml for future use.
+    
+    Supported provider format: 'company/model'
+    Examples:
+      - ollama/llama3.3
+      - openai/gpt-4
+      - anthropic/claude-3-sonnet
+      - cohere/command
+      - google/gemini-pro
+    
+    See full list of providers: https://docs.litellm.ai/docs/providers
+
+9️⃣ Profile Management:
+    # Launch interactive profile manager
+    crwl profiles
+
+    # Create a profile and use it for crawling
+    crwl profiles  # Create and set up your profile interactively
+    crwl https://example.com -p my-profile-name  # Use profile for crawling
+
+    # Example workflow for authenticated site
+    # 1. First create a profile and log in to the site:
+    crwl profiles  # Select "Create new profile" option
+    # 2. Then use that profile to crawl authenticated content:
+    crwl https://site-requiring-login.com/dashboard -p my-profile-name
+"""
+    click.echo(examples)
+
+def get_directory_size(path: str) -> int:
+    """Calculate the total size of a directory in bytes"""
+    total_size = 0
+    for dirpath, _, filenames in os.walk(path):
+        for f in filenames:
+            fp = os.path.join(dirpath, f)
+            if not os.path.islink(fp):
+                total_size += os.path.getsize(fp)
+    return total_size
+
+def display_profiles_table(profiles: List[Dict[str, Any]]):
+    """Display a rich table of browser profiles"""
+    if not profiles:
+        console.print(Panel("[yellow]No profiles found. Create one with the 'create' command.[/yellow]", 
+                          title="Browser Profiles", border_style="blue"))
+        return
+    
+    table = Table(title="Browser Profiles", show_header=True, header_style="bold cyan", border_style="blue")
+    table.add_column("#", style="dim", width=4)
+    table.add_column("Name", style="cyan", no_wrap=True)
+    table.add_column("Path", style="green")
+    table.add_column("Created", style="yellow")
+    table.add_column("Browser", style="magenta")
+    table.add_column("Size", style="blue", justify="right")
+    
+    for i, profile in enumerate(profiles):
+        # Calculate folder size
+        size = get_directory_size(profile["path"])
+        human_size = humanize.naturalsize(size)
+        
+        # Format creation date
+        created = profile["created"].strftime("%Y-%m-%d %H:%M")
+        
+        # Add row to table
+        table.add_row(
+            str(i+1), 
+            profile["name"], 
+            profile["path"], 
+            created, 
+            profile["type"].capitalize(), 
+            human_size
         )
-        click.echo("Search indexes built successfully")
-    except Exception as e:
-        click.echo(f"Error: {str(e)}", err=True)
-        sys.exit(1)
+    
+    console.print(table)
 
-
-# Add docs list command
-@docs.command()
-def list():
-    """List available documentation sections"""
+async def create_profile_interactive(profiler: BrowserProfiler):
+    """Interactive profile creation wizard"""
+    console.print(Panel("[bold cyan]Create Browser Profile[/bold cyan]\n"
+                      "This will open a browser window for you to set up your identity.\n"
+                      "Log in to sites, adjust settings, then press 'q' to save.",
+                      border_style="cyan"))
+    
+    profile_name = Prompt.ask("[cyan]Enter profile name[/cyan]", default=f"profile_{int(time.time())}")
+    
+    console.print("[cyan]Creating profile...[/cyan]")
+    console.print("[yellow]A browser window will open. After logging in to sites, press 'q' in this terminal to save.[/yellow]")
+    
+    # Create the profile
     try:
-        sections = docs_manager.list()
-        print_table(["Sections"], [[section] for section in sections])
-
+        profile_path = await profiler.create_profile(profile_name)
+        
+        if profile_path:
+            console.print(f"[green]Profile successfully created at:[/green] {profile_path}")
+        else:
+            console.print("[red]Failed to create profile.[/red]")
     except Exception as e:
-        click.echo(f"Error: {str(e)}", err=True)
+        console.print(f"[red]Error creating profile: {str(e)}[/red]")
+
+def delete_profile_interactive(profiler: BrowserProfiler):
+    """Interactive profile deletion"""
+    profiles = profiler.list_profiles()
+    
+    if not profiles:
+        console.print("[yellow]No profiles found to delete.[/yellow]")
+        return
+    
+    # Display profiles
+    display_profiles_table(profiles)
+    
+    # Get profile selection
+    idx = Prompt.ask(
+        "[red]Enter number of profile to delete[/red]", 
+        console=console,
+        choices=[str(i+1) for i in range(len(profiles))],
+        show_choices=False
+    )
+    
+    try:
+        idx = int(idx) - 1
+        profile = profiles[idx]
+        
+        # Confirm deletion
+        if Confirm.ask(f"[red]Are you sure you want to delete profile '{profile['name']}'?[/red]"):
+            success = profiler.delete_profile(profile["path"])
+            
+            if success:
+                console.print(f"[green]Profile '{profile['name']}' deleted successfully.[/green]")
+            else:
+                console.print(f"[red]Failed to delete profile '{profile['name']}'.[/red]")
+    except (ValueError, IndexError):
+        console.print("[red]Invalid selection.[/red]")
+        
+async def crawl_with_profile_cli(profile_path, url):
+    """Use a profile to crawl a website via CLI"""
+    console.print(f"[cyan]Crawling [bold]{url}[/bold] using profile at [bold]{profile_path}[/bold][/cyan]")
+    
+    # Create browser config with the profile
+    browser_cfg = BrowserConfig(
+        headless=False,  # Set to False to see the browser in action
+        use_managed_browser=True,
+        user_data_dir=profile_path
+    )
+    
+    # Default crawler config
+    crawler_cfg = CrawlerRunConfig()
+    
+    # Ask for output format
+    output_format = Prompt.ask(
+        "[cyan]Output format[/cyan]",
+        choices=["all", "json", "markdown", "md", "title"],
+        default="markdown"
+    )
+    
+    try:
+        # Run the crawler
+        result = await run_crawler(url, browser_cfg, crawler_cfg, True)
+        
+        # Handle output
+        if output_format == "all":
+            console.print(json.dumps(result.model_dump(), indent=2))
+        elif output_format == "json":
+            console.print(json.dumps(json.loads(result.extracted_content), indent=2))
+        elif output_format in ["markdown", "md"]:
+            console.print(result.markdown.raw_markdown)
+        elif output_format == "title":
+            console.print(result.metadata.get("title", "No title found"))
+        
+        console.print(f"[green]Successfully crawled[/green] {url}")
+        return result
+    except Exception as e:
+        console.print(f"[red]Error crawling:[/red] {str(e)}")
+        return None
+        
+async def use_profile_to_crawl():
+    """Interactive profile selection for crawling"""
+    profiler = BrowserProfiler()
+    profiles = profiler.list_profiles()
+    
+    if not profiles:
+        console.print("[yellow]No profiles found. Create one first.[/yellow]")
+        return
+        
+    # Display profiles
+    display_profiles_table(profiles)
+    
+    # Get profile selection
+    idx = Prompt.ask(
+        "[cyan]Enter number of profile to use[/cyan]", 
+        console=console,
+        choices=[str(i+1) for i in range(len(profiles))],
+        show_choices=False
+    )
+    
+    try:
+        idx = int(idx) - 1
+        profile = profiles[idx]
+        
+        # Get URL
+        url = Prompt.ask("[cyan]Enter URL to crawl[/cyan]")
+        if url:
+            # Crawl with the selected profile
+            await crawl_with_profile_cli(profile["path"], url)
+        else:
+            console.print("[red]No URL provided[/red]")
+    except (ValueError, IndexError):
+        console.print("[red]Invalid selection[/red]")
+
+async def manage_profiles():
+    """Interactive profile management menu"""
+    profiler = BrowserProfiler()
+    
+    options = {
+        "1": "List profiles",
+        "2": "Create new profile",
+        "3": "Delete profile",
+        "4": "Use a profile to crawl a website",
+        "5": "Exit",
+    }
+    
+    while True:
+        console.print(Panel("[bold cyan]Browser Profile Manager[/bold cyan]", border_style="cyan"))
+        
+        for key, value in options.items():
+            color = "green" if key == "1" else "yellow" if key == "2" else "red" if key == "3" else "blue" if key == "4" else "cyan"
+            console.print(f"[{color}]{key}[/{color}]. {value}")
+        
+        choice = Prompt.ask("Enter choice", choices=list(options.keys()), default="1")
+        
+        if choice == "1":
+            # List profiles
+            profiles = profiler.list_profiles()
+            display_profiles_table(profiles)
+        
+        elif choice == "2":
+            # Create profile
+            await create_profile_interactive(profiler)
+        
+        elif choice == "3":
+            # Delete profile
+            delete_profile_interactive(profiler)
+            
+        elif choice == "4":
+            # Use profile to crawl
+            await use_profile_to_crawl()
+        
+        elif choice == "5":
+            # Exit
+            console.print("[cyan]Exiting profile manager.[/cyan]")
+            break
+        
+        # Add a separator between operations
+        console.print("\n")
+
+
+
+@click.group(context_settings={"help_option_names": ["-h", "--help"]})
+def cli():
+    """Crawl4AI CLI - Web content extraction and browser profile management tool"""
+    pass
+
+
+@cli.command("cdp")
+@click.option("--user-data-dir", "-d", help="Directory to use for browser data (will be created if it doesn't exist)")
+@click.option("--port", "-P", type=int, default=9222, help="Debugging port (default: 9222)")
+@click.option("--browser-type", "-b", type=click.Choice(["chromium", "firefox"]), default="chromium", 
+              help="Browser type (default: chromium)")
+@click.option("--headless", is_flag=True, help="Run browser in headless mode")
+@click.option("--incognito", is_flag=True, help="Run in incognito/private mode (ignores user-data-dir)")
+def cdp_cmd(user_data_dir: Optional[str], port: int, browser_type: str, headless: bool, incognito: bool):
+    """Launch a standalone browser with CDP debugging enabled
+    
+    This command launches a browser with Chrome DevTools Protocol (CDP) debugging enabled,
+    prints the CDP URL, and keeps the browser running until you press 'q'.
+    
+    The CDP URL can be used for various automation and debugging tasks.
+    
+    Examples:
+        # Launch Chromium with CDP on default port 9222
+        crwl cdp
+        
+        # Use a specific directory for browser data and custom port
+        crwl cdp --user-data-dir ~/browser-data --port 9223
+        
+        # Launch in headless mode
+        crwl cdp --headless
+        
+        # Launch in incognito mode (ignores user-data-dir)
+        crwl cdp --incognito
+    """
+    profiler = BrowserProfiler()
+    
+    try:
+        # Handle data directory
+        data_dir = None
+        if not incognito and user_data_dir:
+            # Expand user path (~/something)
+            expanded_path = os.path.expanduser(user_data_dir)
+            
+            # Create directory if it doesn't exist
+            if not os.path.exists(expanded_path):
+                console.print(f"[yellow]Directory '{expanded_path}' doesn't exist. Creating it.[/yellow]")
+                os.makedirs(expanded_path, exist_ok=True)
+            
+            data_dir = expanded_path
+        
+        # Print launch info
+        console.print(Panel(
+            f"[cyan]Launching browser with CDP debugging[/cyan]\n\n"
+            f"Browser type: [green]{browser_type}[/green]\n"
+            f"Debugging port: [yellow]{port}[/yellow]\n"
+            f"User data directory: [cyan]{data_dir or 'Temporary directory'}[/cyan]\n"
+            f"Headless: [cyan]{'Yes' if headless else 'No'}[/cyan]\n"
+            f"Incognito: [cyan]{'Yes' if incognito else 'No'}[/cyan]\n\n"
+            f"[yellow]Press 'q' to quit when done[/yellow]",
+            title="CDP Browser",
+            border_style="cyan"
+        ))
+        
+        # Run the browser
+        cdp_url = anyio.run(
+            profiler.launch_standalone_browser,
+            browser_type,
+            data_dir,
+            port,
+            headless
+        )
+        
+        if not cdp_url:
+            console.print("[red]Failed to launch browser or get CDP URL[/red]")
+            sys.exit(1)
+            
+    except Exception as e:
+        console.print(f"[red]Error launching CDP browser: {str(e)}[/red]")
         sys.exit(1)
 
 
+@cli.command("crawl")
+@click.argument("url", required=True)
+@click.option("--browser-config", "-B", type=click.Path(exists=True), help="Browser config file (YAML/JSON)")
+@click.option("--crawler-config", "-C", type=click.Path(exists=True), help="Crawler config file (YAML/JSON)")
+@click.option("--filter-config", "-f", type=click.Path(exists=True), help="Content filter config file")
+@click.option("--extraction-config", "-e", type=click.Path(exists=True), help="Extraction strategy config file")
+@click.option("--schema", "-s", type=click.Path(exists=True), help="JSON schema for extraction")
+@click.option("--browser", "-b", type=str, callback=parse_key_values, help="Browser parameters as key1=value1,key2=value2")
+@click.option("--crawler", "-c", type=str, callback=parse_key_values, help="Crawler parameters as key1=value1,key2=value2")
+@click.option("--output", "-o", type=click.Choice(["all", "json", "markdown", "md", "markdown-fit", "md-fit"]), default="all")
+@click.option("--bypass-cache", is_flag=True, default=True, help="Bypass cache when crawling")
+@click.option("--question", "-q", help="Ask a question about the crawled content")
+@click.option("--verbose", "-v", is_flag=True)
+@click.option("--profile", "-p", help="Use a specific browser profile (by name)")
+def crawl_cmd(url: str, browser_config: str, crawler_config: str, filter_config: str, 
+           extraction_config: str, schema: str, browser: Dict, crawler: Dict,
+           output: str, bypass_cache: bool, question: str, verbose: bool, profile: str):
+    """Crawl a website and extract content
+    
+    Simple Usage:
+        crwl crawl https://example.com
+    """
+    
+    # Handle profile option
+    if profile:
+        profiler = BrowserProfiler()
+        profile_path = profiler.get_profile_path(profile)
+        
+        if not profile_path:
+            profiles = profiler.list_profiles()
+            
+            if profiles:
+                console.print(f"[red]Profile '{profile}' not found. Available profiles:[/red]")
+                display_profiles_table(profiles)
+            else:
+                console.print("[red]No profiles found. Create one with 'crwl profiles'[/red]")
+            
+            return
+        
+        # Include the profile in browser config
+        if not browser:
+            browser = {}
+        browser["user_data_dir"] = profile_path
+        browser["use_managed_browser"] = True
+        
+        if verbose:
+            console.print(f"[green]Using browser profile:[/green] {profile}")
+            
+    try:
+        # Load base configurations
+        browser_cfg = BrowserConfig.load(load_config_file(browser_config))
+        crawler_cfg = CrawlerRunConfig.load(load_config_file(crawler_config))
+        
+        # Override with CLI params
+        if browser:
+            browser_cfg = browser_cfg.clone(**browser)
+        if crawler:
+            crawler_cfg = crawler_cfg.clone(**crawler)
+            
+        # Handle content filter config
+        if filter_config:
+            filter_conf = load_config_file(filter_config)
+            if filter_conf["type"] == "bm25":
+                crawler_cfg.content_filter = BM25ContentFilter(
+                    user_query=filter_conf.get("query"),
+                    bm25_threshold=filter_conf.get("threshold", 1.0)
+                )
+            elif filter_conf["type"] == "pruning":
+                crawler_cfg.content_filter = PruningContentFilter(
+                    user_query=filter_conf.get("query"),
+                    threshold=filter_conf.get("threshold", 0.48)
+                )
+                
+        # Handle extraction strategy
+        if extraction_config:
+            extract_conf = load_config_file(extraction_config)
+            schema_data = load_schema_file(schema)
+            
+            # Check if type does not exist show proper message
+            if not extract_conf.get("type"):
+                raise click.ClickException("Extraction type not specified")
+            if extract_conf["type"] not in ["llm", "json-css", "json-xpath"]:
+                raise click.ClickException(f"Invalid extraction type: {extract_conf['type']}")
+            
+            if extract_conf["type"] == "llm":
+                # if no provider show error emssage
+                if not extract_conf.get("provider") or not extract_conf.get("api_token"):
+                    raise click.ClickException("LLM provider and API token are required for LLM extraction")
+
+                crawler_cfg.extraction_strategy = LLMExtractionStrategy(
+                    llm_config=LLMConfig(provider=extract_conf["provider"], api_token=extract_conf["api_token"]),
+                    instruction=extract_conf["instruction"],
+                    schema=schema_data,
+                    **extract_conf.get("params", {})
+                )
+            elif extract_conf["type"] == "json-css":
+                crawler_cfg.extraction_strategy = JsonCssExtractionStrategy(
+                    schema=schema_data
+                )
+            elif extract_conf["type"] == "json-xpath":
+                crawler_cfg.extraction_strategy = JsonXPathExtractionStrategy(
+                    schema=schema_data
+                )
+                
+
+        # No cache
+        if bypass_cache:
+            crawler_cfg.cache_mode = CacheMode.BYPASS
+        
+        # Run crawler
+        result : CrawlResult = anyio.run(
+            run_crawler,
+            url,
+            browser_cfg,
+            crawler_cfg,
+            verbose
+        )
+
+        # Handle question
+        if question:
+            provider, token = setup_llm_config()
+            markdown = result.markdown.raw_markdown
+            anyio.run(stream_llm_response, url, markdown, question, provider, token)
+            return
+        
+        # Handle output
+        if output == "all":
+            click.echo(json.dumps(result.model_dump(), indent=2))
+        elif output == "json":
+            click.echo(json.dumps(json.loads(result.extracted_content), indent=2))
+        elif output in ["markdown", "md"]:
+            click.echo(result.markdown.raw_markdown)
+        elif output in ["markdown-fit", "md-fit"]:
+            click.echo(result.markdown.fit_markdown)
+            
+    except Exception as e:
+        raise click.ClickException(str(e))
+
+@cli.command("examples")
+def examples_cmd():
+    """Show usage examples"""
+    show_examples()
+
+@cli.command("profiles")
+def profiles_cmd():
+    """Manage browser profiles interactively
+    
+    Launch an interactive browser profile manager where you can:
+    - List all existing profiles
+    - Create new profiles for authenticated browsing
+    - Delete unused profiles
+    """
+    # Run interactive profile manager
+    anyio.run(manage_profiles)
+
+@cli.command(name="")
+@click.argument("url", required=False)
+@click.option("--example", is_flag=True, help="Show usage examples")
+@click.option("--browser-config", "-B", type=click.Path(exists=True), help="Browser config file (YAML/JSON)")
+@click.option("--crawler-config", "-C", type=click.Path(exists=True), help="Crawler config file (YAML/JSON)")
+@click.option("--filter-config", "-f", type=click.Path(exists=True), help="Content filter config file")
+@click.option("--extraction-config", "-e", type=click.Path(exists=True), help="Extraction strategy config file")
+@click.option("--schema", "-s", type=click.Path(exists=True), help="JSON schema for extraction")
+@click.option("--browser", "-b", type=str, callback=parse_key_values, help="Browser parameters as key1=value1,key2=value2")
+@click.option("--crawler", "-c", type=str, callback=parse_key_values, help="Crawler parameters as key1=value1,key2=value2")
+@click.option("--output", "-o", type=click.Choice(["all", "json", "markdown", "md", "markdown-fit", "md-fit"]), default="all")
+@click.option("--bypass-cache", is_flag=True, default=True, help="Bypass cache when crawling")
+@click.option("--question", "-q", help="Ask a question about the crawled content")
+@click.option("--verbose", "-v", is_flag=True)
+@click.option("--profile", "-p", help="Use a specific browser profile (by name)")
+def default(url: str, example: bool, browser_config: str, crawler_config: str, filter_config: str, 
+        extraction_config: str, schema: str, browser: Dict, crawler: Dict,
+        output: str, bypass_cache: bool, question: str, verbose: bool, profile: str):
+    """Crawl4AI CLI - Web content extraction tool
+
+    Simple Usage:
+        crwl https://example.com
+    
+    Run with --example to see detailed usage examples.
+    
+    Other commands:
+        crwl profiles   - Manage browser profiles for identity-based crawling
+        crwl crawl      - Crawl a website with advanced options
+        crwl cdp        - Launch browser with CDP debugging enabled
+        crwl examples   - Show more usage examples
+    """
+
+    if example:
+        show_examples()
+        return
+        
+    if not url:
+        # Show help without error message
+        ctx = click.get_current_context()
+        click.echo(ctx.get_help())
+        return
+        
+    # Forward to crawl command
+    ctx = click.get_current_context()
+    ctx.invoke(
+        crawl_cmd, 
+        url=url, 
+        browser_config=browser_config,
+        crawler_config=crawler_config,
+        filter_config=filter_config,
+        extraction_config=extraction_config, 
+        schema=schema,
+        browser=browser,
+        crawler=crawler,
+        output=output,
+        bypass_cache=bypass_cache,
+        question=question,
+        verbose=verbose,
+        profile=profile
+    )
+
+def main():
+    import sys
+    if len(sys.argv) < 2 or sys.argv[1] not in cli.commands:
+        sys.argv.insert(1, "crawl")
+    cli()
+
 if __name__ == "__main__":
-    cli()
+    main()

crawl4ai/config.py

@@ -15,10 +15,18 @@ PROVIDER_MODELS = {
     "openai/gpt-4o": os.getenv("OPENAI_API_KEY"),
     "openai/o1-mini": os.getenv("OPENAI_API_KEY"),
     "openai/o1-preview": os.getenv("OPENAI_API_KEY"),
+    "openai/o3-mini": os.getenv("OPENAI_API_KEY"),
+    "openai/o3-mini-high": os.getenv("OPENAI_API_KEY"),
     "anthropic/claude-3-haiku-20240307": os.getenv("ANTHROPIC_API_KEY"),
     "anthropic/claude-3-opus-20240229": os.getenv("ANTHROPIC_API_KEY"),
     "anthropic/claude-3-sonnet-20240229": os.getenv("ANTHROPIC_API_KEY"),
     "anthropic/claude-3-5-sonnet-20240620": os.getenv("ANTHROPIC_API_KEY"),
+    "gemini/gemini-pro": os.getenv("GEMINI_API_KEY"),
+    'gemini/gemini-1.5-pro': os.getenv("GEMINI_API_KEY"),
+    'gemini/gemini-2.0-flash': os.getenv("GEMINI_API_KEY"),
+    'gemini/gemini-2.0-flash-exp': os.getenv("GEMINI_API_KEY"),
+    'gemini/gemini-2.0-flash-lite-preview-02-05': os.getenv("GEMINI_API_KEY"),
+    "deepseek/deepseek-chat": os.getenv("DEEPSEEK_API_KEY"),
 }
 
 # Chunk token threshold

crawl4ai/content_filter_strategy.py

@@ -1,3 +1,4 @@
+import inspect
 import re
 import time
 from bs4 import BeautifulSoup, Tag
@@ -5,25 +6,47 @@ from typing import List, Tuple, Dict, Optional
 from rank_bm25 import BM25Okapi
 from collections import deque
 from bs4 import NavigableString, Comment
-from .utils import clean_tokens, perform_completion_with_backoff, escape_json_string, sanitize_html, get_home_folder, extract_xml_data
+
+from .utils import (
+    clean_tokens,
+    perform_completion_with_backoff,
+    escape_json_string,
+    sanitize_html,
+    get_home_folder,
+    extract_xml_data,
+    merge_chunks,
+)
+from .types import LLMConfig
+from .config import DEFAULT_PROVIDER, OVERLAP_RATE, WORD_TOKEN_RATE
 from abc import ABC, abstractmethod
 import math
 from snowballstemmer import stemmer
-from .config import DEFAULT_PROVIDER, OVERLAP_RATE, WORD_TOKEN_RATE
 from .models import TokenUsage
 from .prompts import PROMPT_FILTER_CONTENT
-import os
 import json
 import hashlib
 from pathlib import Path
-from concurrent.futures import ThreadPoolExecutor, as_completed
+from concurrent.futures import ThreadPoolExecutor
 from .async_logger import AsyncLogger, LogLevel
-from colorama import Fore, Style, init
+from colorama import Fore, Style
+
 
 class RelevantContentFilter(ABC):
     """Abstract base class for content filtering strategies"""
 
-    def __init__(self, user_query: str = None):
+    def __init__(
+        self,
+        user_query: str = None,
+        verbose: bool = False,
+        logger: Optional[AsyncLogger] = None,
+    ):
+        """
+        Initializes the RelevantContentFilter class with optional user query.
+
+        Args:
+            user_query (str): User query for filtering (optional).
+            verbose (bool): Enable verbose logging (default: False).
+        """
         self.user_query = user_query
         self.included_tags = {
             # Primary structure
@@ -92,6 +115,8 @@ class RelevantContentFilter(ABC):
             r"nav|footer|header|sidebar|ads|comment|promo|advert|social|share", re.I
         )
         self.min_word_count = 2
+        self.verbose = False
+        self.logger = logger
 
     @abstractmethod
     def filter_content(self, html: str) -> List[str]:
@@ -353,6 +378,7 @@ class RelevantContentFilter(ABC):
         except Exception:
             return str(tag)  # Fallback to original if anything fails
 
+
 class BM25ContentFilter(RelevantContentFilter):
     """
     Content filtering using BM25 algorithm with priority tag handling.
@@ -495,6 +521,7 @@ class BM25ContentFilter(RelevantContentFilter):
 
         return [self.clean_element(tag) for _, _, tag in selected_candidates]
 
+
 class PruningContentFilter(RelevantContentFilter):
     """
     Content filtering using pruning algorithm with dynamic threshold.
@@ -741,110 +768,131 @@ class PruningContentFilter(RelevantContentFilter):
                 class_id_score -= 0.5
         return class_id_score
 
+
 class LLMContentFilter(RelevantContentFilter):
-    """Content filtering using LLMs to generate relevant markdown."""
+    """Content filtering using LLMs to generate relevant markdown.
+
+    How it works:
+    1. Extracts page metadata with fallbacks.
+    2. Extracts text chunks from the body element.
+    3. Applies LLMs to generate markdown for each chunk.
+    4. Filters out chunks below the threshold.
+    5. Sorts chunks by score in descending order.
+    6. Returns the top N chunks.
+
+    Attributes:
+        llm_config (LLMConfig): LLM configuration object.
+        instruction (str): Instruction for LLM markdown generation
+        chunk_token_threshold (int): Chunk token threshold for splitting (default: 1e9).
+        overlap_rate (float): Overlap rate for chunking (default: 0.5).
+        word_token_rate (float): Word token rate for chunking (default: 0.2).
+        verbose (bool): Enable verbose logging (default: False).
+        logger (AsyncLogger): Custom logger for LLM operations (optional).
+    """
+    _UNWANTED_PROPS = {
+        'provider' : 'Instead, use llm_config=LLMConfig(provider="...")',
+        'api_token' : 'Instead, use llm_config=LlMConfig(api_token="...")',
+        'base_url' : 'Instead, use llm_config=LLMConfig(base_url="...")',
+        'api_base' : 'Instead, use llm_config=LLMConfig(base_url="...")',
+    }
 
     def __init__(
         self,
-        provider: str = DEFAULT_PROVIDER,
-        api_token: Optional[str] = None,
+        llm_config: "LLMConfig" = None,
         instruction: str = None,
         chunk_token_threshold: int = int(1e9),
         overlap_rate: float = OVERLAP_RATE,
         word_token_rate: float = WORD_TOKEN_RATE,
+        # char_token_rate: float = WORD_TOKEN_RATE * 5,
+        # chunk_mode: str = "char",
+        verbose: bool = False,
+        logger: Optional[AsyncLogger] = None,
+        ignore_cache: bool = True,
+        # Deprecated properties
+        provider: str = DEFAULT_PROVIDER,
+        api_token: Optional[str] = None,
         base_url: Optional[str] = None,
         api_base: Optional[str] = None,
         extra_args: Dict = None,
-        verbose: bool = False,
-        logger: Optional[AsyncLogger] = None,
     ):
         super().__init__(None)
         self.provider = provider
-        self.api_token = (
-            api_token
-            or PROVIDER_MODELS.get(provider, "no-token")
-            or os.getenv("OPENAI_API_KEY")
-        )
+        self.api_token = api_token
+        self.base_url = base_url or api_base
+        self.llm_config = llm_config
         self.instruction = instruction
         self.chunk_token_threshold = chunk_token_threshold
         self.overlap_rate = overlap_rate
-        self.word_token_rate = word_token_rate
-        self.base_url = base_url
-        self.api_base = api_base or base_url
+        self.word_token_rate = word_token_rate or WORD_TOKEN_RATE
+        # self.chunk_mode: str = chunk_mode
+        # self.char_token_rate = char_token_rate or word_token_rate / 5
+        # self.token_rate = word_token_rate if chunk_mode == "word" else self.char_token_rate
+        self.token_rate = word_token_rate or WORD_TOKEN_RATE
         self.extra_args = extra_args or {}
+        self.ignore_cache = ignore_cache
         self.verbose = verbose
-        
+
         # Setup logger with custom styling for LLM operations
         if logger:
             self.logger = logger
         elif verbose:
             self.logger = AsyncLogger(
-                verbose=True,
+                verbose=verbose,
                 icons={
                     **AsyncLogger.DEFAULT_ICONS,
                     "LLM": "★",  # Star for LLM operations
                     "CHUNK": "◈",  # Diamond for chunks
-                    "CACHE": "⚡", # Lightning for cache operations
+                    "CACHE": "⚡",  # Lightning for cache operations
                 },
                 colors={
                     **AsyncLogger.DEFAULT_COLORS,
-                    LogLevel.INFO: Fore.MAGENTA + Style.DIM,  # Dimmed purple for LLM ops
-                }
+                    LogLevel.INFO: Fore.MAGENTA
+                    + Style.DIM,  # Dimmed purple for LLM ops
+                },
             )
         else:
             self.logger = None
-        
+
         self.usages = []
         self.total_usage = TokenUsage()
+    
+    def __setattr__(self, name, value):
+        """Handle attribute setting."""
+        # TODO: Planning to set properties dynamically based on the __init__ signature
+        sig = inspect.signature(self.__init__)
+        all_params = sig.parameters  # Dictionary of parameter names and their details
 
+        if name in self._UNWANTED_PROPS and value is not all_params[name].default:
+            raise AttributeError(f"Setting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
+        
+        super().__setattr__(name, value)  
+        
     def _get_cache_key(self, html: str, instruction: str) -> str:
         """Generate a unique cache key based on HTML and instruction"""
         content = f"{html}{instruction}"
         return hashlib.md5(content.encode()).hexdigest()
 
     def _merge_chunks(self, text: str) -> List[str]:
-        """Split text into chunks with overlap"""
-        # Calculate tokens and sections
-        total_tokens = len(text.split()) * self.word_token_rate
-        num_sections = max(1, math.floor(total_tokens / self.chunk_token_threshold))
-        adjusted_chunk_threshold = total_tokens / num_sections
+        """Split text into chunks with overlap using char or word mode."""
+        ov = int(self.chunk_token_threshold * self.overlap_rate)
+        sections = merge_chunks(
+            docs=[text],
+            target_size=self.chunk_token_threshold,
+            overlap=ov,
+            word_token_ratio=self.word_token_rate,
+        )
+        return sections
 
-        # Split into words
-        words = text.split()
-        chunks = []
-        current_chunk = []
-        current_token_count = 0
-
-        for word in words:
-            word_tokens = len(word) * self.word_token_rate
-            if current_token_count + word_tokens <= adjusted_chunk_threshold:
-                current_chunk.append(word)
-                current_token_count += word_tokens
-            else:
-                # Add overlap if not the last chunk
-                if chunks and self.overlap_rate > 0:
-                    overlap_size = int(len(current_chunk) * self.overlap_rate)
-                    current_chunk.extend(current_chunk[-overlap_size:])
-                
-                chunks.append(" ".join(current_chunk))
-                current_chunk = [word]
-                current_token_count = word_tokens
-
-        if current_chunk:
-            chunks.append(" ".join(current_chunk))
-
-        return chunks
-
-    def filter_content(self, html: str, ignore_cache: bool = False) -> List[str]:
+    def filter_content(self, html: str, ignore_cache: bool = True) -> List[str]:
         if not html or not isinstance(html, str):
             return []
 
         if self.logger:
             self.logger.info(
-                "Starting LLM content filtering process", 
+                "Starting LLM markdown content filtering process",
                 tag="LLM",
-                params={"provider": self.provider},
-                colors={"provider": Fore.CYAN}
+                params={"provider": self.llm_config.provider},
+                colors={"provider": Fore.CYAN},
             )
 
         # Cache handling
@@ -853,65 +901,88 @@ class LLMContentFilter(RelevantContentFilter):
         cache_key = self._get_cache_key(html, self.instruction or "")
         cache_file = cache_dir / f"{cache_key}.json"
 
+        # if ignore_cache == None:
+        ignore_cache = self.ignore_cache
+
         if not ignore_cache and cache_file.exists():
             if self.logger:
-                self.logger.info("Found cached result", tag="CACHE")
+                self.logger.info("Found  cached markdown result", tag="CACHE")
             try:
-                with cache_file.open('r') as f:
+                with cache_file.open("r") as f:
                     cached_data = json.load(f)
-                    usage = TokenUsage(**cached_data['usage'])
+                    usage = TokenUsage(**cached_data["usage"])
                     self.usages.append(usage)
                     self.total_usage.completion_tokens += usage.completion_tokens
                     self.total_usage.prompt_tokens += usage.prompt_tokens
                     self.total_usage.total_tokens += usage.total_tokens
-                    return cached_data['blocks']
+                    return cached_data["blocks"]
             except Exception as e:
                 if self.logger:
-                    self.logger.error(f"Cache read error: {str(e)}", tag="CACHE")
+                    self.logger.error(
+                        f"LLM markdown: Cache read error: {str(e)}", tag="CACHE"
+                    )
 
         # Split into chunks
         html_chunks = self._merge_chunks(html)
         if self.logger:
             self.logger.info(
-                "Split content into {chunk_count} chunks", 
+                "LLM markdown: Split content into {chunk_count} chunks",
                 tag="CHUNK",
                 params={"chunk_count": len(html_chunks)},
-                colors={"chunk_count": Fore.YELLOW}
+                colors={"chunk_count": Fore.YELLOW},
             )
-        
-        extracted_content = []
+
         start_time = time.time()
-        
+
         # Process chunks in parallel
         with ThreadPoolExecutor(max_workers=4) as executor:
             futures = []
             for i, chunk in enumerate(html_chunks):
                 if self.logger:
                     self.logger.debug(
-                        "Processing chunk {chunk_num}/{total_chunks}", 
+                        "LLM markdown: Processing chunk {chunk_num}/{total_chunks}",
                         tag="CHUNK",
-                        params={
-                            "chunk_num": i + 1,
-                            "total_chunks": len(html_chunks)
-                        }
+                        params={"chunk_num": i + 1, "total_chunks": len(html_chunks)},
                     )
 
                 prompt_variables = {
                     "HTML": escape_json_string(sanitize_html(chunk)),
-                    "REQUEST": self.instruction or "Convert this HTML into clean, relevant markdown, removing any noise or irrelevant content."
+                    "REQUEST": self.instruction
+                    or "Convert this HTML into clean, relevant markdown, removing any noise or irrelevant content.",
                 }
 
                 prompt = PROMPT_FILTER_CONTENT
                 for var, value in prompt_variables.items():
                     prompt = prompt.replace("{" + var + "}", value)
 
+                def _proceed_with_chunk(
+                    provider: str,
+                    prompt: str,
+                    api_token: str,
+                    base_url: Optional[str] = None,
+                    extra_args: Dict = {},
+                ) -> List[str]:
+                    if self.logger:
+                        self.logger.info(
+                            "LLM Markdown: Processing chunk {chunk_num}",
+                            tag="CHUNK",
+                            params={"chunk_num": i + 1},
+                        )
+                    return perform_completion_with_backoff(
+                        provider,
+                        prompt,
+                        api_token,
+                        base_url=base_url,
+                        extra_args=extra_args,
+                    )
+
                 future = executor.submit(
-                    perform_completion_with_backoff,
-                    self.provider,
+                    _proceed_with_chunk,
+                    self.llm_config.provider,
                     prompt,
-                    self.api_token,
-                    base_url=self.api_base,
-                    extra_args=self.extra_args
+                    self.llm_config.api_token,
+                    self.llm_config.base_url,
+                    self.extra_args,
                 )
                 futures.append((i, future))
 
@@ -920,59 +991,61 @@ class LLMContentFilter(RelevantContentFilter):
             for i, future in sorted(futures):
                 try:
                     response = future.result()
-                    
+
                     # Track usage
                     usage = TokenUsage(
                         completion_tokens=response.usage.completion_tokens,
                         prompt_tokens=response.usage.prompt_tokens,
                         total_tokens=response.usage.total_tokens,
-                        completion_tokens_details=response.usage.completion_tokens_details.__dict__ 
-                        if response.usage.completion_tokens_details else {},
-                        prompt_tokens_details=response.usage.prompt_tokens_details.__dict__
-                        if response.usage.prompt_tokens_details else {},
+                        completion_tokens_details=(
+                            response.usage.completion_tokens_details.__dict__
+                            if response.usage.completion_tokens_details
+                            else {}
+                        ),
+                        prompt_tokens_details=(
+                            response.usage.prompt_tokens_details.__dict__
+                            if response.usage.prompt_tokens_details
+                            else {}
+                        ),
                     )
                     self.usages.append(usage)
                     self.total_usage.completion_tokens += usage.completion_tokens
                     self.total_usage.prompt_tokens += usage.prompt_tokens
                     self.total_usage.total_tokens += usage.total_tokens
 
-                    blocks = extract_xml_data(["content"], response.choices[0].message.content)["content"]
+                    blocks = extract_xml_data(
+                        ["content"], response.choices[0].message.content
+                    )["content"]
                     if blocks:
                         ordered_results.append(blocks)
                         if self.logger:
                             self.logger.success(
-                                "Successfully processed chunk {chunk_num}", 
+                                "LLM markdown: Successfully processed chunk {chunk_num}",
                                 tag="CHUNK",
-                                params={"chunk_num": i + 1}
+                                params={"chunk_num": i + 1},
                             )
                 except Exception as e:
                     if self.logger:
                         self.logger.error(
-                            "Error processing chunk {chunk_num}: {error}", 
+                            "LLM markdown: Error processing chunk {chunk_num}: {error}",
                             tag="CHUNK",
-                            params={
-                                "chunk_num": i + 1,
-                                "error": str(e)
-                            }
+                            params={"chunk_num": i + 1, "error": str(e)},
                         )
 
         end_time = time.time()
         if self.logger:
             self.logger.success(
-                "Completed processing in {time:.2f}s", 
+                "LLM markdown: Completed processing in {time:.2f}s",
                 tag="LLM",
                 params={"time": end_time - start_time},
-                colors={"time": Fore.YELLOW}
+                colors={"time": Fore.YELLOW},
             )
 
         result = ordered_results if ordered_results else []
 
         # Cache the final result
-        cache_data = {
-            'blocks': result,
-            'usage': self.total_usage.__dict__
-        }
-        with cache_file.open('w') as f:
+        cache_data = {"blocks": result, "usage": self.total_usage.__dict__}
+        with cache_file.open("w") as f:
             json.dump(cache_data, f)
             if self.logger:
                 self.logger.info("Cached results for future use", tag="CACHE")
@@ -996,4 +1069,4 @@ class LLMContentFilter(RelevantContentFilter):
                 print(
                     f"{i:<10} {usage.completion_tokens:>12,} "
                     f"{usage.prompt_tokens:>12,} {usage.total_tokens:>12,}"
-                )
+                )

crawl4ai/content_scraping_strategy.py

@@ -155,6 +155,7 @@ class WebScrapingStrategy(ContentScrapingStrategy):
                 for aud in raw_result.get("media", {}).get("audios", [])
                 if aud
             ],
+            tables=raw_result.get("media", {}).get("tables", [])
         )
 
         # Convert links
@@ -193,6 +194,153 @@ class WebScrapingStrategy(ContentScrapingStrategy):
         """
         return await asyncio.to_thread(self._scrap, url, html, **kwargs)
 
+    def is_data_table(self, table: Tag, **kwargs) -> bool:
+        """
+        Determine if a table element is a data table (not a layout table).
+
+        Args:
+            table (Tag): BeautifulSoup Tag representing a table element
+            **kwargs: Additional keyword arguments including table_score_threshold
+
+        Returns:
+            bool: True if the table is a data table, False otherwise
+        """
+        score = 0
+        
+        # Check for thead and tbody
+        has_thead = len(table.select('thead')) > 0
+        has_tbody = len(table.select('tbody')) > 0
+        if has_thead:
+            score += 2
+        if has_tbody:
+            score += 1
+            
+        # Check for th elements
+        th_count = len(table.select('th'))
+        if th_count > 0:
+            score += 2
+            if has_thead or len(table.select('tr:first-child th')) > 0:
+                score += 1
+                
+        # Check for nested tables
+        if len(table.select('table')) > 0:
+            score -= 3
+            
+        # Role attribute check
+        role = table.get('role', '').lower()
+        if role in {'presentation', 'none'}:
+            score -= 3
+            
+        # Column consistency
+        rows = table.select('tr')
+        if not rows:
+            return False
+            
+        col_counts = [len(row.select('td, th')) for row in rows]
+        avg_cols = sum(col_counts) / len(col_counts)
+        variance = sum((c - avg_cols)**2 for c in col_counts) / len(col_counts)
+        if variance < 1:
+            score += 2
+            
+        # Caption and summary
+        if table.select('caption'):
+            score += 2
+        if table.has_attr('summary') and table['summary']:
+            score += 1
+            
+        # Text density
+        total_text = sum(len(cell.get_text().strip()) for row in rows for cell in row.select('td, th'))
+        total_tags = sum(1 for _ in table.descendants if isinstance(_, Tag))
+        text_ratio = total_text / (total_tags + 1e-5)
+        if text_ratio > 20:
+            score += 3
+        elif text_ratio > 10:
+            score += 2
+            
+        # Data attributes
+        data_attrs = sum(1 for attr in table.attrs if attr.startswith('data-'))
+        score += data_attrs * 0.5
+        
+        # Size check
+        if avg_cols >= 2 and len(rows) >= 2:
+            score += 2
+            
+        threshold = kwargs.get('table_score_threshold', 7)
+        return score >= threshold
+    
+    def extract_table_data(self, table: Tag) -> dict:
+        """
+        Extract structured data from a table element.
+        
+        Args:
+            table (Tag): BeautifulSoup Tag representing a table element
+            
+        Returns:
+            dict: Dictionary containing table data (headers, rows, caption, summary)
+        """
+        caption_elem = table.select_one('caption')
+        caption = caption_elem.get_text().strip() if caption_elem else ""
+        summary = table.get('summary', '').strip()
+        
+        # Extract headers with colspan handling
+        headers = []
+        thead_rows = table.select('thead tr')
+        if thead_rows:
+            header_cells = thead_rows[0].select('th')
+            for cell in header_cells:
+                text = cell.get_text().strip()
+                colspan = int(cell.get('colspan', 1))
+                headers.extend([text] * colspan)
+        else:
+            first_row = table.select('tr:first-child')
+            if first_row:
+                for cell in first_row[0].select('th, td'):
+                    text = cell.get_text().strip()
+                    colspan = int(cell.get('colspan', 1))
+                    headers.extend([text] * colspan)
+        
+        # Extract rows with colspan handling
+        rows = []
+        all_rows = table.select('tr')
+        thead = table.select_one('thead')
+        tbody_rows = []
+
+        if thead:
+            thead_rows = thead.select('tr')
+            tbody_rows = [row for row in all_rows if row not in thead_rows]
+        else:
+            if all_rows and all_rows[0].select('th'):
+                tbody_rows = all_rows[1:]
+            else:
+                tbody_rows = all_rows
+                
+        for row in tbody_rows:        
+        # for row in table.select('tr:not(:has(ancestor::thead))'):
+            row_data = []
+            for cell in row.select('td'):
+                text = cell.get_text().strip()
+                colspan = int(cell.get('colspan', 1))
+                row_data.extend([text] * colspan)
+            if row_data:
+                rows.append(row_data)
+                
+        # Align rows with headers
+        max_columns = len(headers) if headers else (max(len(row) for row in rows) if rows else 0)
+        aligned_rows = []
+        for row in rows:
+            aligned = row[:max_columns] + [''] * (max_columns - len(row))
+            aligned_rows.append(aligned)
+            
+        if not headers:
+            headers = [f"Column {i+1}" for i in range(max_columns)]
+            
+        return {
+            "headers": headers,
+            "rows": aligned_rows,
+            "caption": caption,
+            "summary": summary,
+        }
+    
     def flatten_nested_elements(self, node):
         """
         Flatten nested elements in a HTML tree.
@@ -431,7 +579,7 @@ class WebScrapingStrategy(ContentScrapingStrategy):
         Returns:
             dict: A dictionary containing the processed element information.
         """
-        media = {"images": [], "videos": [], "audios": []}
+        media = {"images": [], "videos": [], "audios": [], "tables": []}
         internal_links_dict = {}
         external_links_dict = {}
         self._process_element(
@@ -529,6 +677,9 @@ class WebScrapingStrategy(ContentScrapingStrategy):
                         if normalized_href not in external_links_dict:
                             external_links_dict[normalized_href] = link_data
                     else:
+                        if kwargs.get("exclude_internal_links", False):
+                            element.decompose()
+                            return False
                         if normalized_href not in internal_links_dict:
                             internal_links_dict[normalized_href] = link_data
 
@@ -629,7 +780,7 @@ class WebScrapingStrategy(ContentScrapingStrategy):
 
             try:
                 self.remove_unwanted_attributes(
-                    element, IMPORTANT_ATTRS, kwargs.get("keep_data_attributes", False)
+                    element, IMPORTANT_ATTRS + kwargs.get("keep_attrs", []) , kwargs.get("keep_data_attributes", False)
                 )
             except Exception as e:
                 # print('Error removing unwanted attributes:', str(e))
@@ -685,6 +836,7 @@ class WebScrapingStrategy(ContentScrapingStrategy):
         html: str,
         word_count_threshold: int = MIN_WORD_THRESHOLD,
         css_selector: str = None,
+        target_elements: List[str] = None,
         **kwargs,
     ) -> Dict[str, Any]:
         """
@@ -739,22 +891,37 @@ class WebScrapingStrategy(ContentScrapingStrategy):
                 for element in body.select(excluded_selector):
                     element.extract()
 
-        if css_selector:
-            selected_elements = body.select(css_selector)
-            if not selected_elements:
-                return {
-                    "markdown": "",
-                    "cleaned_html": "",
-                    "success": True,
-                    "media": {"images": [], "videos": [], "audios": []},
-                    "links": {"internal": [], "external": []},
-                    "metadata": {},
-                    "message": f"No elements found for CSS selector: {css_selector}",
-                }
-                # raise InvalidCSSSelectorError(f"Invalid CSS selector, No elements found for CSS selector: {css_selector}")
-            body = soup.new_tag("div")
-            for el in selected_elements:
-                body.append(el)
+        # if False and css_selector:
+        #     selected_elements = body.select(css_selector)
+        #     if not selected_elements:
+        #         return {
+        #             "markdown": "",
+        #             "cleaned_html": "",
+        #             "success": True,
+        #             "media": {"images": [], "videos": [], "audios": []},
+        #             "links": {"internal": [], "external": []},
+        #             "metadata": {},
+        #             "message": f"No elements found for CSS selector: {css_selector}",
+        #         }
+        #         # raise InvalidCSSSelectorError(f"Invalid CSS selector, No elements found for CSS selector: {css_selector}")
+        #     body = soup.new_tag("div")
+        #     for el in selected_elements:
+        #         body.append(el)
+
+        content_element = None
+        if target_elements:
+            try:
+                for_content_targeted_element = []
+                for target_element in target_elements:
+                    for_content_targeted_element.extend(body.select(target_element))
+                content_element = soup.new_tag("div")
+                for el in for_content_targeted_element:
+                    content_element.append(el)
+            except Exception as e:
+                self._log("error", f"Error with target element detection: {str(e)}", "SCRAPE")
+                return None
+        else:
+            content_element = body        
 
         kwargs["exclude_social_media_domains"] = set(
             kwargs.get("exclude_social_media_domains", []) + SOCIAL_MEDIA_DOMAINS
@@ -794,6 +961,15 @@ class WebScrapingStrategy(ContentScrapingStrategy):
             if result is not None
             for img in result
         ]
+        
+        # Process tables if not excluded
+        excluded_tags = set(kwargs.get("excluded_tags", []) or [])
+        if 'table' not in excluded_tags:
+            tables = body.find_all('table')
+            for table in tables:
+                if self.is_data_table(table, **kwargs):
+                    table_data = self.extract_table_data(table)
+                    media["tables"].append(table_data)
 
         body = self.flatten_nested_elements(body)
         base64_pattern = re.compile(r'data:image/[^;]+;base64,([^"]+)')
@@ -805,7 +981,7 @@ class WebScrapingStrategy(ContentScrapingStrategy):
 
         str_body = ""
         try:
-            str_body = body.encode_contents().decode("utf-8")
+            str_body = content_element.encode_contents().decode("utf-8")
         except Exception:
             # Reset body to the original HTML
             success = False
@@ -844,7 +1020,6 @@ class WebScrapingStrategy(ContentScrapingStrategy):
         cleaned_html = str_body.replace("\n\n", "\n").replace("  ", " ")
 
         return {
-            # **markdown_content,
             "cleaned_html": cleaned_html,
             "success": success,
             "media": media,
@@ -1184,12 +1359,125 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
 
         return root
 
+    def is_data_table(self, table: etree.Element, **kwargs) -> bool:
+        score = 0
+        # Check for thead and tbody
+        has_thead = len(table.xpath(".//thead")) > 0
+        has_tbody = len(table.xpath(".//tbody")) > 0
+        if has_thead:
+            score += 2
+        if has_tbody:
+            score += 1
+
+        # Check for th elements
+        th_count = len(table.xpath(".//th"))
+        if th_count > 0:
+            score += 2
+            if has_thead or table.xpath(".//tr[1]/th"):
+                score += 1
+
+        # Check for nested tables
+        if len(table.xpath(".//table")) > 0:
+            score -= 3
+
+        # Role attribute check
+        role = table.get("role", "").lower()
+        if role in {"presentation", "none"}:
+            score -= 3
+
+        # Column consistency
+        rows = table.xpath(".//tr")
+        if not rows:
+            return False
+        col_counts = [len(row.xpath(".//td|.//th")) for row in rows]
+        avg_cols = sum(col_counts) / len(col_counts)
+        variance = sum((c - avg_cols)**2 for c in col_counts) / len(col_counts)
+        if variance < 1:
+            score += 2
+
+        # Caption and summary
+        if table.xpath(".//caption"):
+            score += 2
+        if table.get("summary"):
+            score += 1
+
+        # Text density
+        total_text = sum(len(''.join(cell.itertext()).strip()) for row in rows for cell in row.xpath(".//td|.//th"))
+        total_tags = sum(1 for _ in table.iterdescendants())
+        text_ratio = total_text / (total_tags + 1e-5)
+        if text_ratio > 20:
+            score += 3
+        elif text_ratio > 10:
+            score += 2
+
+        # Data attributes
+        data_attrs = sum(1 for attr in table.attrib if attr.startswith('data-'))
+        score += data_attrs * 0.5
+
+        # Size check
+        if avg_cols >= 2 and len(rows) >= 2:
+            score += 2
+
+        threshold = kwargs.get("table_score_threshold", 7)
+        return score >= threshold
+
+    def extract_table_data(self, table: etree.Element) -> dict:
+        caption = table.xpath(".//caption/text()")
+        caption = caption[0].strip() if caption else ""
+        summary = table.get("summary", "").strip()
+
+        # Extract headers with colspan handling
+        headers = []
+        thead_rows = table.xpath(".//thead/tr")
+        if thead_rows:
+            header_cells = thead_rows[0].xpath(".//th")
+            for cell in header_cells:
+                text = cell.text_content().strip()
+                colspan = int(cell.get("colspan", 1))
+                headers.extend([text] * colspan)
+        else:
+            first_row = table.xpath(".//tr[1]")
+            if first_row:
+                for cell in first_row[0].xpath(".//th|.//td"):
+                    text = cell.text_content().strip()
+                    colspan = int(cell.get("colspan", 1))
+                    headers.extend([text] * colspan)
+
+        # Extract rows with colspan handling
+        rows = []
+        for row in table.xpath(".//tr[not(ancestor::thead)]"):
+            row_data = []
+            for cell in row.xpath(".//td"):
+                text = cell.text_content().strip()
+                colspan = int(cell.get("colspan", 1))
+                row_data.extend([text] * colspan)
+            if row_data:
+                rows.append(row_data)
+
+        # Align rows with headers
+        max_columns = len(headers) if headers else (max(len(row) for row in rows) if rows else 0)
+        aligned_rows = []
+        for row in rows:
+            aligned = row[:max_columns] + [''] * (max_columns - len(row))
+            aligned_rows.append(aligned)
+
+        if not headers:
+            headers = [f"Column {i+1}" for i in range(max_columns)]
+
+        return {
+            "headers": headers,
+            "rows": aligned_rows,
+            "caption": caption,
+            "summary": summary,
+        }
+
     def _scrap(
         self,
         url: str,
         html: str,
         word_count_threshold: int = MIN_WORD_THRESHOLD,
         css_selector: str = None,
+        target_elements: List[str] = None,
         **kwargs,
     ) -> Dict[str, Any]:
         if not html:
@@ -1240,24 +1528,38 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
                 meta = {}
 
             # Handle CSS selector targeting
-            if css_selector:
+            # if css_selector:
+            #     try:
+            #         selected_elements = body.cssselect(css_selector)
+            #         if not selected_elements:
+            #             return {
+            #                 "markdown": "",
+            #                 "cleaned_html": "",
+            #                 "success": True,
+            #                 "media": {"images": [], "videos": [], "audios": []},
+            #                 "links": {"internal": [], "external": []},
+            #                 "metadata": meta,
+            #                 "message": f"No elements found for CSS selector: {css_selector}",
+            #             }
+            #         body = lhtml.Element("div")
+            #         body.extend(selected_elements)
+            #     except Exception as e:
+            #         self._log("error", f"Error with CSS selector: {str(e)}", "SCRAPE")
+            #         return None
+
+            content_element = None
+            if target_elements:
                 try:
-                    selected_elements = body.cssselect(css_selector)
-                    if not selected_elements:
-                        return {
-                            "markdown": "",
-                            "cleaned_html": "",
-                            "success": True,
-                            "media": {"images": [], "videos": [], "audios": []},
-                            "links": {"internal": [], "external": []},
-                            "metadata": meta,
-                            "message": f"No elements found for CSS selector: {css_selector}",
-                        }
-                    body = lhtml.Element("div")
-                    body.extend(selected_elements)
+                    for_content_targeted_element = []
+                    for target_element in target_elements:
+                        for_content_targeted_element.extend(body.cssselect(target_element))
+                    content_element = lhtml.Element("div")
+                    content_element.extend(for_content_targeted_element)
                 except Exception as e:
-                    self._log("error", f"Error with CSS selector: {str(e)}", "SCRAPE")
+                    self._log("error", f"Error with target element detection: {str(e)}", "SCRAPE")
                     return None
+            else:
+                content_element = body
 
             # Remove script and style tags
             for tag in ["script", "style", "link", "meta", "noscript"]:
@@ -1281,7 +1583,7 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
                         form.getparent().remove(form)
 
             # Process content
-            media = {"images": [], "videos": [], "audios": []}
+            media = {"images": [], "videos": [], "audios": [], "tables": []}
             internal_links_dict = {}
             external_links_dict = {}
 
@@ -1295,6 +1597,13 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
                 **kwargs,
             )
 
+            if 'table' not in excluded_tags:
+                tables = body.xpath(".//table")
+                for table in tables:
+                    if self.is_data_table(table, **kwargs):
+                        table_data = self.extract_table_data(table)
+                        media["tables"].append(table_data)
+
             # Handle only_text option
             if kwargs.get("only_text", False):
                 for tag in ONLY_TEXT_ELIGIBLE_TAGS:
@@ -1321,7 +1630,8 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
 
             # Generate output HTML
             cleaned_html = lhtml.tostring(
-                body,
+                # body,   
+                content_element,
                 encoding="unicode",
                 pretty_print=True,
                 method="html",
@@ -1366,7 +1676,12 @@ class LXMLWebScrapingStrategy(WebScrapingStrategy):
             return {
                 "cleaned_html": cleaned_html,
                 "success": False,
-                "media": {"images": [], "videos": [], "audios": []},
+                "media": {
+                    "images": [],
+                    "videos": [],
+                    "audios": [],
+                    "tables": []
+                },
                 "links": {"internal": [], "external": []},
                 "metadata": {},
             }

crawl4ai/crawlers/amazon_product/crawler.py

@@ -0,0 +1,20 @@
+from crawl4ai.hub import BaseCrawler
+
+__meta__ = {
+    "version": "1.2.0",
+    "tested_on": ["amazon.com"],
+    "rate_limit": "50 RPM",
+    "schema": {"product": ["name", "price"]}
+}
+
+class AmazonProductCrawler(BaseCrawler):
+    async def run(self, url: str, **kwargs) -> str:
+        try:
+            self.logger.info(f"Crawling {url}")
+            return '{"product": {"name": "Test Amazon Product"}}'
+        except Exception as e:
+            self.logger.error(f"Crawl failed: {str(e)}")
+            return json.dumps({
+                "error": str(e),
+                "metadata": self.meta  # Include meta in error response
+            })            

crawl4ai/crawlers/google_search/crawler.py

@@ -0,0 +1,130 @@
+from crawl4ai import BrowserConfig, AsyncWebCrawler, CrawlerRunConfig, CacheMode
+from crawl4ai.hub import BaseCrawler
+from crawl4ai.utils import optimize_html, get_home_folder
+from crawl4ai.extraction_strategy import JsonCssExtractionStrategy
+from pathlib import Path
+import json
+import os
+from typing import Dict
+
+
+class GoogleSearchCrawler(BaseCrawler):
+    __meta__ = {
+        "version": "1.0.0",
+        "tested_on": ["google.com/search*"],
+        "rate_limit": "10 RPM",
+        "description": "Crawls Google Search results (text + images)",
+    }
+
+    def __init__(self):
+        super().__init__()
+        self.js_script = (Path(__file__).parent /
+                          "script.js").read_text()
+
+    async def run(self, url="", query: str = "", search_type: str = "text", schema_cache_path = None, **kwargs) -> str:
+        """Crawl Google Search results for a query"""
+        url = f"https://www.google.com/search?q={query}&gl=sg&hl=en" if search_type == "text" else f"https://www.google.com/search?q={query}&gl=sg&hl=en&tbs=qdr:d&udm=2"
+        if kwargs.get("page_start", 1) > 1:
+            url = f"{url}&start={kwargs['page_start'] * 10}"
+        if kwargs.get("page_length", 1) > 1:
+            url = f"{url}&num={kwargs['page_length']}"
+            
+        browser_config = BrowserConfig(headless=True, verbose=True)
+        async with AsyncWebCrawler(config=browser_config) as crawler:
+            config = CrawlerRunConfig(
+                cache_mode=kwargs.get("cache_mode", CacheMode.BYPASS),
+                keep_attrs=["id", "class"],
+                keep_data_attributes=True,
+                delay_before_return_html=kwargs.get(
+                    "delay", 2 if search_type == "image" else 1),
+                js_code=self.js_script if search_type == "image" else None,
+            )
+
+            result = await crawler.arun(url=url, config=config)
+            if not result.success:
+                return json.dumps({"error": result.error})
+
+            if search_type == "image":
+                if result.js_execution_result.get("success", False) is False:
+                    return json.dumps({"error": result.js_execution_result.get("error", "Unknown error")})
+                if "results" in result.js_execution_result:
+                    image_result = result.js_execution_result['results'][0]
+                    if image_result.get("success", False) is False:
+                        return json.dumps({"error": image_result.get("error", "Unknown error")})
+                    return json.dumps(image_result["result"], indent=4)
+
+            # For text search, extract structured data
+            schemas = await self._build_schemas(result.cleaned_html, schema_cache_path)
+            extracted = {
+                key: JsonCssExtractionStrategy(schema=schemas[key]).run(
+                    url=url, sections=[result.html]
+                )
+                for key in schemas
+            }
+            return json.dumps(extracted, indent=4)
+
+    async def _build_schemas(self, html: str, schema_cache_path: str = None) -> Dict[str, Dict]:
+        """Build extraction schemas (organic, top stories, etc.)"""
+        home_dir = get_home_folder() if not schema_cache_path else schema_cache_path
+        os.makedirs(f"{home_dir}/schema", exist_ok=True)
+
+        cleaned_html = optimize_html(html, threshold=100)
+
+        organic_schema = None
+        if os.path.exists(f"{home_dir}/schema/organic_schema.json"):
+            with open(f"{home_dir}/schema/organic_schema.json", "r") as f:
+                organic_schema = json.load(f)
+        else:
+            organic_schema = JsonCssExtractionStrategy.generate_schema(
+                html=cleaned_html,
+                target_json_example="""{
+            "title": "...",
+            "link": "...",
+            "snippet": "...",
+            "date": "1 hour ago",
+        }""",
+                query="""The given html is the crawled html from Google search result. Please find the schema for organic search item in the given html, I am interested in title, link, snippet text. date."""
+            )
+
+            with open(f"{home_dir}/schema/organic_schema.json", "w") as f:
+                f.write(json.dumps(organic_schema))
+
+        top_stories_schema = None
+        if os.path.exists(f"{home_dir}/schema/top_stories_schema.json"):
+            with open(f"{home_dir}/schema/top_stories_schema.json", "r") as f:
+                top_stories_schema = json.load(f)
+        else:
+            top_stories_schema = JsonCssExtractionStrategy.generate_schema(
+                html=cleaned_html,
+                target_json_example="""{
+            "title": "...",
+            "link": "...",
+            "source": "Insider Monkey",
+            "date": "1 hour ago",
+        }""",
+                query="""The given html is the crawled html from Google search result. Please find the schema for Top Story item int he given html, I am interested in title, link, source. date and imageUrl."""
+            )
+
+            with open(f"{home_dir}/schema/top_stories_schema.json", "w") as f:
+                f.write(json.dumps(top_stories_schema))
+
+        suggested_query_schema = None
+        if os.path.exists(f"{home_dir}/schema/suggested_query_schema.json"):
+            with open(f"{home_dir}/schema/suggested_query_schema.json", "r") as f:
+                suggested_query_schema = json.load(f)
+        else:
+            suggested_query_schema = JsonCssExtractionStrategy.generate_schema(
+                html=cleaned_html,
+                target_json_example="""{
+            "query": "A for Apple",
+        }""",
+                query="""The given HTML contains the crawled HTML from Google search results. Please find the schema for each suggested query in the section "People also search for" within the given HTML. I am interested in the queries only."""
+            )
+            with open(f"{home_dir}/schema/suggested_query_schema.json", "w") as f:
+                f.write(json.dumps(suggested_query_schema))
+
+        return {
+            "organic_schema": organic_schema,
+            "top_stories_schema": top_stories_schema,
+            "suggested_query_schema": suggested_query_schema,
+        }

crawl4ai/crawlers/google_search/script.js

@@ -0,0 +1,115 @@
+(() => {
+    // Function to extract image data from Google Images page
+    function extractImageData() {
+        const keys = Object.keys(window.W_jd);
+        let allImageData = [];
+        let currentPosition = 0;
+
+        // Get the symbol we'll use (from first valid entry)
+        let targetSymbol;
+        for (let key of keys) {
+            try {
+                const symbols = Object.getOwnPropertySymbols(window.W_jd[key]);
+                if (symbols.length > 0) {
+                    targetSymbol = symbols[0];
+                    break;
+                }
+            } catch (e) {
+                continue;
+            }
+        }
+
+        if (!targetSymbol) return [];
+
+        // Iterate through ALL keys
+        for (let key of keys) {
+            try {
+                const o1 = window.W_jd[key][targetSymbol]
+                if (!o1) continue;
+                const data = Object.values(o1)[0]
+                // const data = window.W_jd[key][targetSymbol]?.Ws;
+                // Check if this is a valid image data entry
+                if (data && Array.isArray(data[1])) {
+                    const processedData = processImageEntry(data, currentPosition);
+                    if (processedData) {
+                        allImageData.push(processedData);
+                        currentPosition++;
+                    }
+                }
+            } catch (e) {
+                continue;
+            }
+        }
+
+        return allImageData;
+    }
+
+    function processImageEntry(entry, position) {
+        const imageData = entry[1];
+        if (!Array.isArray(imageData)) return null;
+
+        // Extract the image ID
+        const imageId = imageData[1];
+        if (!imageId) return null;
+
+        // Find the corresponding DOM element
+        const domElement = document.querySelector(`[data-docid="${imageId}"]`);
+        if (!domElement) return null;
+
+        // Extract data from the array structure
+        const [
+            _,
+            id,
+            thumbnailInfo,
+            imageInfo,
+            __,
+            ___,
+            rgb,
+            ____,
+            _____,
+            metadata
+        ] = imageData;
+
+        // Ensure we have the required data
+        if (!thumbnailInfo || !imageInfo) return null;
+
+        // Extract metadata from DOM
+        const title = domElement?.querySelector('.toI8Rb')?.textContent?.trim();
+        const source = domElement?.querySelector('.guK3rf')?.textContent?.trim();
+        const link = domElement?.querySelector('a.EZAeBe')?.href;
+
+        if (!link) return null;
+
+        // Build Google Image URL
+        const googleUrl = buildGoogleImageUrl(imageInfo[0], link, imageId, imageInfo[1], imageInfo[2]);
+
+        return {
+            title,
+            imageUrl: imageInfo[0],
+            imageWidth: imageInfo[2],
+            imageHeight: imageInfo[1],
+            thumbnailUrl: thumbnailInfo[0],
+            thumbnailWidth: thumbnailInfo[2],
+            thumbnailHeight: thumbnailInfo[1],
+            source,
+            domain: metadata['2000']?.[1] || new URL(link).hostname,
+            link,
+            googleUrl,
+            position: position + 1
+        };
+    }
+
+    function buildGoogleImageUrl(imgUrl, refUrl, tbnid, height, width) {
+        const params = new URLSearchParams({
+            imgurl: imgUrl,
+            tbnid: tbnid,
+            imgrefurl: refUrl,
+            docid: tbnid,
+            w: width.toString(),
+            h: height.toString(),
+        });
+
+        return `https://www.google.com/imgres?${params.toString()}`;
+    }
+    return extractImageData();
+})();

crawl4ai/deep_crawling/__init__.py

@@ -0,0 +1,47 @@
+# deep_crawling/__init__.py
+from .base_strategy import DeepCrawlDecorator, DeepCrawlStrategy
+from .bfs_strategy import BFSDeepCrawlStrategy
+from .bff_strategy import BestFirstCrawlingStrategy
+from .dfs_strategy import DFSDeepCrawlStrategy
+from .filters import (
+    FilterChain,
+    ContentTypeFilter,
+    DomainFilter,
+    URLFilter,
+    URLPatternFilter,
+    FilterStats,
+    ContentRelevanceFilter,
+    SEOFilter
+)
+from .scorers import (
+    KeywordRelevanceScorer,
+    URLScorer,
+    CompositeScorer,
+    DomainAuthorityScorer,
+    FreshnessScorer,
+    PathDepthScorer,
+    ContentTypeScorer
+)
+
+__all__ = [
+    "DeepCrawlDecorator",
+    "DeepCrawlStrategy",
+    "BFSDeepCrawlStrategy",
+    "BestFirstCrawlingStrategy",
+    "DFSDeepCrawlStrategy",
+    "FilterChain",
+    "ContentTypeFilter",
+    "DomainFilter",
+    "URLFilter",
+    "URLPatternFilter",
+    "FilterStats",
+    "ContentRelevanceFilter",
+    "SEOFilter",
+    "KeywordRelevanceScorer",
+    "URLScorer",
+    "CompositeScorer",
+    "DomainAuthorityScorer",
+    "FreshnessScorer",
+    "PathDepthScorer",
+    "ContentTypeScorer",
+]

crawl4ai/deep_crawling/base_strategy.py

@@ -0,0 +1,159 @@
+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from typing import AsyncGenerator, Optional, Set, List, Dict
+from functools import wraps
+from contextvars import ContextVar
+from ..types import AsyncWebCrawler, CrawlerRunConfig, CrawlResult, RunManyReturn
+
+
+class DeepCrawlDecorator:
+    """Decorator that adds deep crawling capability to arun method."""
+    deep_crawl_active = ContextVar("deep_crawl_active", default=False)
+    
+    def __init__(self, crawler: AsyncWebCrawler): 
+        self.crawler = crawler
+
+    def __call__(self, original_arun):
+        @wraps(original_arun)
+        async def wrapped_arun(url: str, config: CrawlerRunConfig = None, **kwargs):
+            # If deep crawling is already active, call the original method to avoid recursion.
+            if config and config.deep_crawl_strategy and not self.deep_crawl_active.get():
+                token = self.deep_crawl_active.set(True)
+                # Await the arun call to get the actual result object.
+                result_obj = await config.deep_crawl_strategy.arun(
+                    crawler=self.crawler,
+                    start_url=url,
+                    config=config
+                )
+                if config.stream:
+                    async def result_wrapper():
+                        try:
+                            async for result in result_obj:
+                                yield result
+                        finally:
+                            self.deep_crawl_active.reset(token)
+                    return result_wrapper()
+                else:
+                    try:
+                        return result_obj
+                    finally:
+                        self.deep_crawl_active.reset(token)
+            return await original_arun(url, config=config, **kwargs)
+        return wrapped_arun
+
+class DeepCrawlStrategy(ABC):
+    """
+    Abstract base class for deep crawling strategies.
+    
+    Core functions:
+      - arun: Main entry point that returns an async generator of CrawlResults.
+      - shutdown: Clean up resources.
+      - can_process_url: Validate a URL and decide whether to process it.
+      - _process_links: Extract and process links from a CrawlResult.
+    """
+
+    @abstractmethod
+    async def _arun_batch(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> List[CrawlResult]:
+        """
+        Batch (non-streaming) mode:
+        Processes one BFS level at a time, then yields all the results.
+        """
+        pass
+
+    @abstractmethod
+    async def _arun_stream(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> AsyncGenerator[CrawlResult, None]:
+        """
+        Streaming mode:
+        Processes one BFS level at a time and yields results immediately as they arrive.
+        """
+        pass
+    
+    async def arun(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: Optional[CrawlerRunConfig] = None,
+    ) -> RunManyReturn:
+        """
+        Traverse the given URL using the specified crawler.
+        
+        Args:
+            start_url (str): The URL from which to start crawling.
+            crawler (AsyncWebCrawler): The crawler instance to use.
+            crawler_run_config (Optional[CrawlerRunConfig]): Crawler configuration.
+        
+        Returns:
+            Union[CrawlResultT, List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]
+        """
+        if config is None:
+            raise ValueError("CrawlerRunConfig must be provided")
+
+        if config.stream:
+            return self._arun_stream(start_url, crawler, config)
+        else:
+            return await self._arun_batch(start_url, crawler, config)
+
+    def __call__(self, start_url: str, crawler: AsyncWebCrawler, config: CrawlerRunConfig):
+        return self.arun(start_url, crawler, config)
+
+    @abstractmethod
+    async def shutdown(self) -> None:
+        """
+        Clean up resources used by the deep crawl strategy.
+        """
+        pass
+
+    @abstractmethod
+    async def can_process_url(self, url: str, depth: int) -> bool:
+        """
+        Validate the URL format and apply custom filtering logic.
+        
+        Args:
+            url (str): The URL to validate.
+            depth (int): The current depth in the crawl.
+        
+        Returns:
+            bool: True if the URL should be processed, False otherwise.
+        """
+        pass
+
+    @abstractmethod
+    async def link_discovery(
+        self,
+        result: CrawlResult,
+        source_url: str,
+        current_depth: int,
+        visited: Set[str],
+        next_level: List[tuple],
+        depths: Dict[str, int],
+    ) -> None:
+        """
+        Extract and process links from the given crawl result.
+        
+        This method should:
+          - Validate each extracted URL using can_process_url.
+          - Optionally score URLs.
+          - Append valid URLs (and their parent references) to the next_level list.
+          - Update the depths dictionary with the new depth for each URL.
+        
+        Args:
+            result (CrawlResult): The result from a crawl operation.
+            source_url (str): The URL from which this result was obtained.
+            current_depth (int): The depth at which the source URL was processed.
+            visited (Set[str]): Set of already visited URLs.
+            next_level (List[tuple]): List of tuples (url, parent_url) for the next BFS level.
+            depths (Dict[str, int]): Mapping of URLs to their current depth.
+        """
+        pass
+

crawl4ai/deep_crawling/bff_strategy.py

@@ -0,0 +1,255 @@
+# best_first_crawling_strategy.py
+import asyncio
+import logging
+from datetime import datetime
+from typing import AsyncGenerator, Optional, Set, Dict, List, Tuple
+from urllib.parse import urlparse
+
+from ..models import TraversalStats
+from .filters import FilterChain
+from .scorers import URLScorer
+from . import DeepCrawlStrategy
+
+from ..types import AsyncWebCrawler, CrawlerRunConfig, CrawlResult, RunManyReturn
+
+from math import inf as infinity
+
+# Configurable batch size for processing items from the priority queue
+BATCH_SIZE = 10
+
+
+class BestFirstCrawlingStrategy(DeepCrawlStrategy):
+    """
+    Best-First Crawling Strategy using a priority queue.
+    
+    This strategy prioritizes URLs based on their score, ensuring that higher-value
+    pages are crawled first. It reimplements the core traversal loop to use a priority
+    queue while keeping URL validation and link discovery consistent with our design.
+    
+    Core methods:
+      - arun: Returns either a list (batch mode) or an async generator (stream mode).
+      - _arun_best_first: Core generator that uses a priority queue to yield CrawlResults.
+      - can_process_url: Validates URLs and applies filtering (inherited behavior).
+      - link_discovery: Extracts and validates links from a CrawlResult.
+    """
+    def __init__(
+        self,
+        max_depth: int,
+        filter_chain: FilterChain = FilterChain(),
+        url_scorer: Optional[URLScorer] = None,
+        include_external: bool = False,
+        max_pages: int = infinity,
+        logger: Optional[logging.Logger] = None,
+    ):
+        self.max_depth = max_depth
+        self.filter_chain = filter_chain
+        self.url_scorer = url_scorer
+        self.include_external = include_external
+        self.max_pages = max_pages
+        self.logger = logger or logging.getLogger(__name__)
+        self.stats = TraversalStats(start_time=datetime.now())
+        self._cancel_event = asyncio.Event()
+        self._pages_crawled = 0
+
+    async def can_process_url(self, url: str, depth: int) -> bool:
+        """
+        Validate the URL format and apply filtering.
+        For the starting URL (depth 0), filtering is bypassed.
+        """
+        try:
+            parsed = urlparse(url)
+            if not parsed.scheme or not parsed.netloc:
+                raise ValueError("Missing scheme or netloc")
+            if parsed.scheme not in ("http", "https"):
+                raise ValueError("Invalid scheme")
+            if "." not in parsed.netloc:
+                raise ValueError("Invalid domain")
+        except Exception as e:
+            self.logger.warning(f"Invalid URL: {url}, error: {e}")
+            return False
+
+        if depth != 0 and not await self.filter_chain.apply(url):
+            return False
+
+        return True
+
+    async def link_discovery(
+        self,
+        result: CrawlResult,
+        source_url: str,
+        current_depth: int,
+        visited: Set[str],
+        next_links: List[Tuple[str, Optional[str]]],
+        depths: Dict[str, int],
+    ) -> None:
+        """
+        Extract links from the crawl result, validate them, and append new URLs
+        (with their parent references) to next_links.
+        Also updates the depths dictionary.
+        """
+        new_depth = current_depth + 1
+        if new_depth > self.max_depth:
+            return
+            
+        # If we've reached the max pages limit, don't discover new links
+        remaining_capacity = self.max_pages - self._pages_crawled
+        if remaining_capacity <= 0:
+            self.logger.info(f"Max pages limit ({self.max_pages}) reached, stopping link discovery")
+            return
+
+        # Retrieve internal links; include external links if enabled.
+        links = result.links.get("internal", [])
+        if self.include_external:
+            links += result.links.get("external", [])
+
+        # If we have more links than remaining capacity, limit how many we'll process
+        valid_links = []
+        for link in links:
+            url = link.get("href")
+            if url in visited:
+                continue
+            if not await self.can_process_url(url, new_depth):
+                self.stats.urls_skipped += 1
+                continue
+                
+            valid_links.append(url)
+            
+        # If we have more valid links than capacity, limit them
+        if len(valid_links) > remaining_capacity:
+            valid_links = valid_links[:remaining_capacity]
+            self.logger.info(f"Limiting to {remaining_capacity} URLs due to max_pages limit")
+            
+        # Record the new depths and add to next_links
+        for url in valid_links:
+            depths[url] = new_depth
+            next_links.append((url, source_url))
+
+    async def _arun_best_first(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> AsyncGenerator[CrawlResult, None]:
+        """
+        Core best-first crawl method using a priority queue.
+        
+        The queue items are tuples of (score, depth, url, parent_url). Lower scores
+        are treated as higher priority. URLs are processed in batches for efficiency.
+        """
+        queue: asyncio.PriorityQueue = asyncio.PriorityQueue()
+        # Push the initial URL with score 0 and depth 0.
+        await queue.put((0, 0, start_url, None))
+        visited: Set[str] = set()
+        depths: Dict[str, int] = {start_url: 0}
+
+        while not queue.empty() and not self._cancel_event.is_set():
+            # Stop if we've reached the max pages limit
+            if self._pages_crawled >= self.max_pages:
+                self.logger.info(f"Max pages limit ({self.max_pages}) reached, stopping crawl")
+                break
+                
+            batch: List[Tuple[float, int, str, Optional[str]]] = []
+            # Retrieve up to BATCH_SIZE items from the priority queue.
+            for _ in range(BATCH_SIZE):
+                if queue.empty():
+                    break
+                item = await queue.get()
+                score, depth, url, parent_url = item
+                if url in visited:
+                    continue
+                visited.add(url)
+                batch.append(item)
+
+            if not batch:
+                continue
+
+            # Process the current batch of URLs.
+            urls = [item[2] for item in batch]
+            batch_config = config.clone(deep_crawl_strategy=None, stream=True)
+            stream_gen = await crawler.arun_many(urls=urls, config=batch_config)
+            async for result in stream_gen:
+                result_url = result.url
+                # Find the corresponding tuple from the batch.
+                corresponding = next((item for item in batch if item[2] == result_url), None)
+                if not corresponding:
+                    continue
+                score, depth, url, parent_url = corresponding
+                result.metadata = result.metadata or {}
+                result.metadata["depth"] = depth
+                result.metadata["parent_url"] = parent_url
+                result.metadata["score"] = score
+                
+                # Count only successful crawls toward max_pages limit
+                if result.success:
+                    self._pages_crawled += 1
+                
+                yield result
+                
+                # Only discover links from successful crawls
+                if result.success:
+                    # Discover new links from this result
+                    new_links: List[Tuple[str, Optional[str]]] = []
+                    await self.link_discovery(result, result_url, depth, visited, new_links, depths)
+                    
+                    for new_url, new_parent in new_links:
+                        new_depth = depths.get(new_url, depth + 1)
+                        new_score = self.url_scorer.score(new_url) if self.url_scorer else 0
+                        await queue.put((new_score, new_depth, new_url, new_parent))
+
+        # End of crawl.
+
+    async def _arun_batch(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> List[CrawlResult]:
+        """
+        Best-first crawl in batch mode.
+        
+        Aggregates all CrawlResults into a list.
+        """
+        results: List[CrawlResult] = []
+        async for result in self._arun_best_first(start_url, crawler, config):
+            results.append(result)
+        return results
+
+    async def _arun_stream(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> AsyncGenerator[CrawlResult, None]:
+        """
+        Best-first crawl in streaming mode.
+        
+        Yields CrawlResults as they become available.
+        """
+        async for result in self._arun_best_first(start_url, crawler, config):
+            yield result
+
+    async def arun(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: Optional[CrawlerRunConfig] = None,
+    ) -> "RunManyReturn":
+        """
+        Main entry point for best-first crawling.
+        
+        Returns either a list (batch mode) or an async generator (stream mode)
+        of CrawlResults.
+        """
+        if config is None:
+            raise ValueError("CrawlerRunConfig must be provided")
+        if config.stream:
+            return self._arun_stream(start_url, crawler, config)
+        else:
+            return await self._arun_batch(start_url, crawler, config)
+
+    async def shutdown(self) -> None:
+        """
+        Signal cancellation and clean up resources.
+        """
+        self._cancel_event.set()
+        self.stats.end_time = datetime.now()

crawl4ai/deep_crawling/bfs_strategy.py

@@ -0,0 +1,245 @@
+# bfs_deep_crawl_strategy.py
+import asyncio
+import logging
+from datetime import datetime
+from typing import AsyncGenerator, Optional, Set, Dict, List, Tuple
+from urllib.parse import urlparse
+
+from ..models import TraversalStats
+from .filters import FilterChain
+from .scorers import URLScorer
+from . import DeepCrawlStrategy  
+from ..types import AsyncWebCrawler, CrawlerRunConfig, CrawlResult
+from ..utils import normalize_url_for_deep_crawl, efficient_normalize_url_for_deep_crawl
+from math import inf as infinity
+
+class BFSDeepCrawlStrategy(DeepCrawlStrategy):
+    """
+    Breadth-First Search deep crawling strategy.
+    
+    Core functions:
+      - arun: Main entry point; splits execution into batch or stream modes.
+      - link_discovery: Extracts, filters, and (if needed) scores the outgoing URLs.
+      - can_process_url: Validates URL format and applies the filter chain.
+    """
+    def __init__(
+        self,
+        max_depth: int,
+        filter_chain: FilterChain = FilterChain(),
+        url_scorer: Optional[URLScorer] = None,        
+        include_external: bool = False,
+        score_threshold: float = -infinity,
+        max_pages: int = infinity,
+        logger: Optional[logging.Logger] = None,
+    ):
+        self.max_depth = max_depth
+        self.filter_chain = filter_chain
+        self.url_scorer = url_scorer
+        self.include_external = include_external
+        self.score_threshold = score_threshold
+        self.max_pages = max_pages
+        self.logger = logger or logging.getLogger(__name__)
+        self.stats = TraversalStats(start_time=datetime.now())
+        self._cancel_event = asyncio.Event()
+        self._pages_crawled = 0
+
+    async def can_process_url(self, url: str, depth: int) -> bool:
+        """
+        Validates the URL and applies the filter chain.
+        For the start URL (depth 0) filtering is bypassed.
+        """
+        try:
+            parsed = urlparse(url)
+            if not parsed.scheme or not parsed.netloc:
+                raise ValueError("Missing scheme or netloc")
+            if parsed.scheme not in ("http", "https"):
+                raise ValueError("Invalid scheme")
+            if "." not in parsed.netloc:
+                raise ValueError("Invalid domain")
+        except Exception as e:
+            self.logger.warning(f"Invalid URL: {url}, error: {e}")
+            return False
+
+        if depth != 0 and not await self.filter_chain.apply(url):
+            return False
+
+        return True
+
+    async def link_discovery(
+        self,
+        result: CrawlResult,
+        source_url: str,
+        current_depth: int,
+        visited: Set[str],
+        next_level: List[Tuple[str, Optional[str]]],
+        depths: Dict[str, int],
+    ) -> None:
+        """
+        Extracts links from the crawl result, validates and scores them, and
+        prepares the next level of URLs.
+        Each valid URL is appended to next_level as a tuple (url, parent_url)
+        and its depth is tracked.
+        """            
+        next_depth = current_depth + 1
+        if next_depth > self.max_depth:
+            return
+
+        # If we've reached the max pages limit, don't discover new links
+        remaining_capacity = self.max_pages - self._pages_crawled
+        if remaining_capacity <= 0:
+            self.logger.info(f"Max pages limit ({self.max_pages}) reached, stopping link discovery")
+            return
+
+        # Get internal links and, if enabled, external links.
+        links = result.links.get("internal", [])
+        if self.include_external:
+            links += result.links.get("external", [])
+
+        valid_links = []
+        
+        # First collect all valid links
+        for link in links:
+            url = link.get("href")
+            # Strip URL fragments to avoid duplicate crawling
+            # base_url = url.split('#')[0] if url else url
+            base_url = normalize_url_for_deep_crawl(url, source_url)
+            if base_url in visited:
+                continue
+            if not await self.can_process_url(url, next_depth):
+                self.stats.urls_skipped += 1
+                continue
+
+            # Score the URL if a scorer is provided
+            score = self.url_scorer.score(base_url) if self.url_scorer else 0
+            
+            # Skip URLs with scores below the threshold
+            if score < self.score_threshold:
+                self.logger.debug(f"URL {url} skipped: score {score} below threshold {self.score_threshold}")
+                self.stats.urls_skipped += 1
+                continue
+            
+            valid_links.append((base_url, score))
+        
+        # If we have more valid links than capacity, sort by score and take the top ones
+        if len(valid_links) > remaining_capacity:
+            if self.url_scorer:
+                # Sort by score in descending order
+                valid_links.sort(key=lambda x: x[1], reverse=True)
+            # Take only as many as we have capacity for
+            valid_links = valid_links[:remaining_capacity]
+            self.logger.info(f"Limiting to {remaining_capacity} URLs due to max_pages limit")
+            
+        # Process the final selected links
+        for url, score in valid_links:
+            # attach the score to metadata if needed
+            if score:
+                result.metadata = result.metadata or {}
+                result.metadata["score"] = score
+            next_level.append((url, source_url))
+            depths[url] = next_depth
+
+    async def _arun_batch(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> List[CrawlResult]:
+        """
+        Batch (non-streaming) mode:
+        Processes one BFS level at a time, then yields all the results.
+        """
+        visited: Set[str] = set()
+        # current_level holds tuples: (url, parent_url)
+        current_level: List[Tuple[str, Optional[str]]] = [(start_url, None)]
+        depths: Dict[str, int] = {start_url: 0}
+
+        results: List[CrawlResult] = []
+
+        while current_level and not self._cancel_event.is_set():
+            next_level: List[Tuple[str, Optional[str]]] = []
+            urls = [url for url, _ in current_level]
+            visited.update(urls)
+
+            # Clone the config to disable deep crawling recursion and enforce batch mode.
+            batch_config = config.clone(deep_crawl_strategy=None, stream=False)
+            batch_results = await crawler.arun_many(urls=urls, config=batch_config)
+            
+            # Update pages crawled counter - count only successful crawls
+            successful_results = [r for r in batch_results if r.success]
+            self._pages_crawled += len(successful_results)
+            
+            for result in batch_results:
+                url = result.url
+                depth = depths.get(url, 0)
+                result.metadata = result.metadata or {}
+                result.metadata["depth"] = depth
+                parent_url = next((parent for (u, parent) in current_level if u == url), None)
+                result.metadata["parent_url"] = parent_url
+                results.append(result)
+                
+                # Only discover links from successful crawls
+                if result.success:
+                    # Link discovery will handle the max pages limit internally
+                    await self.link_discovery(result, url, depth, visited, next_level, depths)
+
+            current_level = next_level
+
+        return results
+
+    async def _arun_stream(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> AsyncGenerator[CrawlResult, None]:
+        """
+        Streaming mode:
+        Processes one BFS level at a time and yields results immediately as they arrive.
+        """
+        visited: Set[str] = set()
+        current_level: List[Tuple[str, Optional[str]]] = [(start_url, None)]
+        depths: Dict[str, int] = {start_url: 0}
+
+        while current_level and not self._cancel_event.is_set():
+            next_level: List[Tuple[str, Optional[str]]] = []
+            urls = [url for url, _ in current_level]
+            visited.update(urls)
+
+            stream_config = config.clone(deep_crawl_strategy=None, stream=True)
+            stream_gen = await crawler.arun_many(urls=urls, config=stream_config)
+            
+            # Keep track of processed results for this batch
+            results_count = 0
+            async for result in stream_gen:
+                url = result.url
+                depth = depths.get(url, 0)
+                result.metadata = result.metadata or {}
+                result.metadata["depth"] = depth
+                parent_url = next((parent for (u, parent) in current_level if u == url), None)
+                result.metadata["parent_url"] = parent_url
+                
+                # Count only successful crawls
+                if result.success:
+                    self._pages_crawled += 1
+                
+                results_count += 1
+                yield result
+                
+                # Only discover links from successful crawls
+                if result.success:
+                    # Link discovery will handle the max pages limit internally
+                    await self.link_discovery(result, url, depth, visited, next_level, depths)
+            
+            # If we didn't get results back (e.g. due to errors), avoid getting stuck in an infinite loop
+            # by considering these URLs as visited but not counting them toward the max_pages limit
+            if results_count == 0 and urls:
+                self.logger.warning(f"No results returned for {len(urls)} URLs, marking as visited")
+                
+            current_level = next_level
+
+    async def shutdown(self) -> None:
+        """
+        Clean up resources and signal cancellation of the crawl.
+        """
+        self._cancel_event.set()
+        self.stats.end_time = datetime.now()

crawl4ai/deep_crawling/crazy.py

@@ -0,0 +1,432 @@
+from __future__ import annotations
+# I just got crazy, trying to wrute K&R C but in Python. Right now I feel like I'm in a quantum state.
+# I probably won't use this; I just want to leave it here. A century later, the future human race will be like, "WTF?"
+
+# ------ Imports That Will Make You Question Reality ------ #
+from functools import wraps
+from contextvars import ContextVar
+import inspect
+
+from crawl4ai import CacheMode
+from crawl4ai.async_configs import CrawlerRunConfig
+from crawl4ai.models import CrawlResult, TraversalStats
+from crawl4ai.deep_crawling.filters import FilterChain
+from crawl4ai.async_webcrawler import AsyncWebCrawler
+import time
+import logging
+from urllib.parse import urlparse
+
+from abc import ABC, abstractmethod
+from collections import deque
+import asyncio
+from typing import (
+    AsyncGenerator,
+    Dict,
+    List,
+    TypeVar,
+    Generic,
+    Tuple,
+    Callable,
+    Awaitable,
+    Union,
+)
+from functools import lru_cache
+import mmh3
+from bitarray import bitarray
+import numpy as np
+from heapq import heappush, heappop
+
+# ------ Type Algebra Mastery ------ #
+CrawlResultT = TypeVar("CrawlResultT", bound="CrawlResult")
+PriorityT = TypeVar("PriorityT")
+P = TypeVar("P")
+
+# ------ Hyperscalar Context Management ------ #
+deep_crawl_ctx = ContextVar("deep_crawl_stack", default=deque())
+
+# ------ Algebraic Crawler Monoid ------ #
+class TraversalContext:
+    __slots__ = ('visited', 'frontier', 'depths', 'priority_fn', 'current_depth')
+    
+    def __init__(self,
+                 priority_fn: Callable[[str], Awaitable[float]] = lambda _: 1.0):
+        self.visited: BloomFilter = BloomFilter(10**6, 0.01)  # 1M items, 1% FP
+        self.frontier: PriorityQueue = PriorityQueue()
+        self.depths: Dict[str, int] = {}
+        self.priority_fn = priority_fn
+        self.current_depth = 0
+
+    def clone_for_level(self) -> TraversalContext:
+        """Monadic context propagation"""
+        new_ctx = TraversalContext(self.priority_fn)
+        new_ctx.visited = self.visited.copy()
+        new_ctx.depths = self.depths.copy()
+        new_ctx.current_depth = self.current_depth
+        return new_ctx
+
+class PriorityQueue(Generic[PriorityT]):
+    """Fibonacci heap-inspired priority queue with O(1) amortized operations"""
+    __slots__ = ('_heap', '_index')
+
+    def __init__(self):
+        self._heap: List[Tuple[PriorityT, float, P]] = []
+        self._index: Dict[P, int] = {}
+
+    def insert(self, priority: PriorityT, item: P) -> None:
+        tiebreaker = time.time()  # Ensure FIFO for equal priorities
+        heappush(self._heap, (priority, tiebreaker, item))
+        self._index[item] = len(self._heap) - 1
+
+    def extract(self, top_n = 1) -> P:
+        items = []
+        for _ in range(top_n):
+            if not self._heap:
+                break
+            priority, _, item = heappop(self._heap)
+            del self._index[item]
+            items.append(item)
+        if not items:
+            raise IndexError("Priority queue empty")
+        return items
+        # while self._heap:
+        #     _, _, item = heappop(self._heap)
+        #     if item in self._index:
+        #         del self._index[item]
+        #         return item
+        raise IndexError("Priority queue empty")
+
+
+    def is_empty(self) -> bool:
+        return not bool(self._heap)
+
+class BloomFilter:
+    """Optimal Bloom filter using murmur3 hash avalanche"""
+    __slots__ = ('size', 'hashes', 'bits')
+
+    def __init__(self, capacity: int, error_rate: float):
+        self.size = self._optimal_size(capacity, error_rate)
+        self.hashes = self._optimal_hashes(capacity, self.size)
+        self.bits = bitarray(self.size)
+        self.bits.setall(False)
+
+    @staticmethod
+    def _optimal_size(n: int, p: float) -> int:
+        m = - (n * np.log(p)) / (np.log(2) ** 2)
+        return int(np.ceil(m))
+
+    @staticmethod
+    def _optimal_hashes(n: int, m: int) -> int:
+        k = (m / n) * np.log(2)
+        return int(np.ceil(k))
+
+    def add(self, item: str) -> None:
+        for seed in range(self.hashes):
+            digest = mmh3.hash(item, seed) % self.size
+            self.bits[digest] = True
+
+    def __contains__(self, item: str) -> bool:
+        return all(
+            self.bits[mmh3.hash(item, seed) % self.size]
+            for seed in range(self.hashes)
+        )
+
+    def copy(self) -> BloomFilter:
+        new = object.__new__(BloomFilter)
+        new.size = self.size
+        new.hashes = self.hashes
+        new.bits = self.bits.copy()
+        return new
+    
+    def __len__(self) -> int:
+        """
+        Estimates the number of items in the filter using the 
+        count of set bits and the formula:
+        n = -m/k * ln(1 - X/m)
+        where:
+            m = size of bit array
+            k = number of hash functions
+            X = count of set bits
+        """
+        set_bits = self.bits.count(True)
+        if set_bits == 0:
+            return 0
+            
+        # Use the inverse bloom filter formula to estimate cardinality
+        return int(
+            -(self.size / self.hashes) * 
+            np.log(1 - set_bits / self.size)
+        )
+    
+    def bit_count(self) -> int:
+        """Returns the raw count of set bits in the filter"""
+        return self.bits.count(True)
+        
+    def __repr__(self) -> str:
+        return f"BloomFilter(est_items={len(self)}, bits={self.bit_count()}/{self.size})"
+
+# ------ Hyper-Optimal Deep Crawl Core ------ #
+class DeepCrawlDecorator:
+    """Metaprogramming marvel: Zero-cost deep crawl abstraction"""
+    def __init__(self, crawler: AsyncWebCrawler):
+        self.crawler = crawler
+
+    def __call__(self, original_arun: Callable) -> Callable:
+        @wraps(original_arun)
+        async def quantum_arun(url: str, config: CrawlerRunConfig = None, **kwargs):
+            stack = deep_crawl_ctx.get()
+            if config and config.deep_crawl_strategy and not stack:
+                stack.append(self.crawler)
+                try:
+                    deep_crawl_ctx.set(stack)
+                    async for result in config.deep_crawl_strategy.traverse(
+                        start_url=url,
+                        crawler=self.crawler,
+                        config=config
+                    ):
+                        yield result
+                finally:
+                    stack.pop()
+                    deep_crawl_ctx.set(stack)
+            else:
+                result = await original_arun(url, config=config, **kwargs)
+                yield result
+        return quantum_arun
+
+
+async def collect_results(url, crawler, config):
+    if id(getattr(crawler, "arun")) != id(getattr(crawler, "original_arun")):
+        setattr(crawler, "arun", getattr(crawler, "original_arun"))
+
+    ret = crawler.arun(url, config=config)
+    # If arun is an async generator, iterate over it
+    if inspect.isasyncgen(ret):
+        return [r async for r in ret]
+    # Otherwise, await the coroutine and normalize to a list
+    result = await ret
+    return result if isinstance(result, list) else [result]
+
+async def collect_many_results(url, crawler, config):
+    # Replace back arun to its original implementation
+    if id(getattr(crawler, "arun")) != id(getattr(crawler, "original_arun")):
+        setattr(crawler, "arun", getattr(crawler, "original_arun"))
+    ret = crawler.arun_many(url, config=config)
+    # If arun is an async generator, iterate over it
+    if inspect.isasyncgen(ret):
+        return [r async for r in ret]
+    # Otherwise, await the coroutine and normalize to a list
+    result = await ret
+    return result if isinstance(result, list) else [result]
+
+
+# ------ Deep Crawl Strategy Interface ------ #
+CrawlResultT = TypeVar("CrawlResultT", bound=CrawlResult)
+# In batch mode we return List[CrawlResult] and in stream mode an AsyncGenerator.
+RunManyReturn = Union[CrawlResultT, List[CrawlResultT], AsyncGenerator[CrawlResultT, None]]
+
+
+class DeepCrawlStrategy(ABC):
+    """Abstract base class that will make Dijkstra smile"""
+    @abstractmethod
+    async def traverse(self,
+                      start_url: str,
+                      crawler: AsyncWebCrawler,
+                      config: CrawlerRunConfig) -> RunManyReturn:
+        """Traverse with O(1) memory complexity via generator fusion"""
+        ...
+
+    @abstractmethod
+    def precompute_priority(self, url: str) -> Awaitable[float]:
+        """Quantum-inspired priority precomputation"""
+        pass
+
+    @abstractmethod
+    async def link_hypercube(self, result: CrawlResult) -> AsyncGenerator[str, None]:
+        """Hilbert-curve optimized link generation"""
+        pass
+
+# ------ BFS That Would Make Knuth Proud ------ #
+
+def calculate_quantum_batch_size(
+    depth: int,
+    max_depth: int,
+    frontier_size: int,
+    visited_size: int
+) -> int:
+    """
+    Calculates optimal batch size for URL processing using quantum-inspired mathematical principles.
+    
+    This function implements a sophisticated batch size calculation using:
+    1. Golden Ratio (φ) based scaling for optimal irrationality
+    2. Depth-aware amplitude modulation
+    3. Harmonic series dampening
+    4. Logarithmic growth control
+    5. Dynamic frontier adaptation
+    
+    The formula follows the quantum harmonic oscillator principle:
+        N = ⌈φ^(2d) * log₂(|V|) * H(d)⁻¹ * min(20, |F|/10)⌉
+    where:
+        φ = Golden Ratio ((1 + √5) / 2)
+        d = depth factor (normalized remaining depth)
+        |V| = size of visited set
+        H(d) = d-th harmonic number
+        |F| = frontier size
+    
+    Args:
+        depth (int): Current traversal depth
+        max_depth (int): Maximum allowed depth
+        frontier_size (int): Current size of frontier queue
+        visited_size (int): Number of URLs visited so far
+    
+    Returns:
+        int: Optimal batch size bounded between 1 and 100
+        
+    Mathematical Properties:
+        - Maintains O(log n) growth with respect to visited size
+        - Provides φ-optimal distribution of resources
+        - Ensures quantum-like state transitions between depths
+        - Harmonically dampened to prevent exponential explosion
+    """
+    # Golden ratio φ = (1 + √5) / 2
+    φ = (1 + 5 ** 0.5) / 2
+    
+    # Calculate normalized depth factor [0, 1]
+    depth_factor = (max_depth - depth) / max_depth if depth < max_depth else 0
+    
+    # Compute harmonic number for current depth
+    harmonic = sum(1/k for k in range(1, depth + 2))
+    
+    # Calculate quantum batch size
+    batch_size = int(np.ceil(
+        (φ ** (depth_factor * 2)) *          # Golden ratio scaling
+        np.log2(visited_size + 2) *          # Logarithmic growth factor
+        (1 / harmonic) *                     # Harmonic dampening
+        max(1, min(20, frontier_size / 10))  # Frontier-aware scaling
+    ))
+    
+    # Enforce practical bounds
+    return max(1, min(100, batch_size))
+
+
+class BFSDeepCrawlStrategy(DeepCrawlStrategy):
+    """Breadth-First Search with Einstein-Rosen bridge optimization"""
+    __slots__ = ('max_depth', 'filter_chain', 'priority_fn', 'stats', '_cancel')
+
+    def __init__(self,
+                 max_depth: int,
+                 filter_chain: FilterChain = FilterChain(),
+                 priority_fn: Callable[[str], Awaitable[float]] = lambda url: 1.0,
+                 logger: logging.Logger = None):
+        self.max_depth = max_depth
+        self.filter_chain = filter_chain
+        self.priority_fn = priority_fn
+        self.stats = TraversalStats()
+        self._cancel = asyncio.Event()
+        self.semaphore = asyncio.Semaphore(1000)
+
+    async def traverse(self,
+                      start_url: str,
+                      crawler: AsyncWebCrawler,
+                      config: CrawlerRunConfig) -> RunManyReturn:
+        """Non-blocking BFS with O(b^d) time complexity awareness"""
+        ctx = TraversalContext(self.priority_fn)
+        ctx.frontier.insert(self.priority_fn(start_url), (start_url, None, 0))
+        ctx.visited.add(start_url)
+        ctx.depths[start_url] = 0
+
+        while not ctx.frontier.is_empty() and not self._cancel.is_set():
+            # Use the best algorith, to find top_n value
+            top_n = calculate_quantum_batch_size(
+                depth=ctx.current_depth,
+                max_depth=self.max_depth,
+                frontier_size=len(ctx.frontier._heap),
+                visited_size=len(ctx.visited)
+            )
+
+            urls = ctx.frontier.extract(top_n=top_n)
+            # url, parent, depth = ctx.frontier.extract(top_n=top_n)
+            if urls:
+                ctx.current_depth = urls[0][2]
+
+            async with self.semaphore:
+                results = await collect_many_results([url for (url, parent, depth) in urls], crawler, config)
+                # results = await asyncio.gather(*[
+                #     collect_results(url, crawler, config) for (url, parent, depth) in urls
+                # ])
+                # result = _result[0]
+                for ix, result in enumerate(results):
+                    url, parent, depth = result.url, urls[ix][1], urls[ix][2]
+                    result.metadata['depth'] = depth
+                    result.metadata['parent'] = parent
+                    yield result
+
+                    if depth < self.max_depth:
+                        async for link in self.link_hypercube(result):
+                            if link not in ctx.visited:
+                                priority = self.priority_fn(link)
+                                ctx.frontier.insert(priority, (link, url, depth + 1))
+                                ctx.visited.add(link)
+                                ctx.depths[link] = depth + 1
+
+    @lru_cache(maxsize=65536)
+    async def validate_url(self, url: str) -> bool:
+        """Memoized URL validation with λ-calculus purity"""
+        try:
+            parsed = urlparse(url)
+            return (parsed.scheme in {'http', 'https'}
+                    and '.' in parsed.netloc
+                    and await self.filter_chain.apply(url))
+        except Exception:
+            return False
+
+    async def link_hypercube(self, result: CrawlResult) -> AsyncGenerator[str, None]:
+        """Hilbert-ordered link generation with O(1) yield latency"""
+        links = (link['href'] for link in result.links.get('internal', []))
+        validated = filter(self.validate_url, links)
+        for link in sorted(validated, key=lambda x: -self.priority_fn(x)):
+            yield link
+
+    def __aiter__(self) -> AsyncGenerator[CrawlResult, None]:
+        """Native async iterator interface"""
+        return self.traverse()
+
+    async def __anext__(self) -> CrawlResult:
+        """True async iterator protocol implementation"""
+        result = await self.traverse().__anext__()
+        if result:
+            return result
+        raise StopAsyncIteration
+
+    async def precompute_priority(self, url):
+        return super().precompute_priority(url)
+
+    async def shutdown(self):
+        self._cancel.set()
+
+# ------ Usage That Will Drop Jaws ------ #
+async def main():
+    """Quantum crawl example"""
+    strategy = BFSDeepCrawlStrategy(
+        max_depth=2,
+        priority_fn=lambda url: 1.0 / (len(url) + 1e-9),  # Inverse length priority
+        # filter_chain=FilterChain(...)
+    )
+
+    config: CrawlerRunConfig = CrawlerRunConfig(
+        deep_crawl_strategy=strategy,
+        stream=False,
+        verbose=True,
+        cache_mode=CacheMode.BYPASS
+    )
+
+    async with AsyncWebCrawler() as crawler:
+        run_decorator = DeepCrawlDecorator(crawler)
+        setattr(crawler, "original_arun", crawler.arun)
+        crawler.arun = run_decorator(crawler.arun)
+        start_time = time.perf_counter()
+        async for result in crawler.arun("https://docs.crawl4ai.com", config=config):
+            print(f"🌀 {result.url} (Depth: {result.metadata['depth']})")
+        print(f"Deep crawl completed in {time.perf_counter() - start_time:.2f}s")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

crawl4ai/deep_crawling/dfs_strategy.py

@@ -0,0 +1,102 @@
+# dfs_deep_crawl_strategy.py
+from typing import AsyncGenerator, Optional, Set, Dict, List, Tuple
+
+from ..models import CrawlResult
+from .bfs_strategy import BFSDeepCrawlStrategy  # noqa
+from ..types import AsyncWebCrawler, CrawlerRunConfig
+
+class DFSDeepCrawlStrategy(BFSDeepCrawlStrategy):
+    """
+    Depth-First Search (DFS) deep crawling strategy.
+
+    Inherits URL validation and link discovery from BFSDeepCrawlStrategy.
+    Overrides _arun_batch and _arun_stream to use a stack (LIFO) for DFS traversal.
+    """
+    async def _arun_batch(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> List[CrawlResult]:
+        """
+        Batch (non-streaming) DFS mode.
+        Uses a stack to traverse URLs in DFS order, aggregating CrawlResults into a list.
+        """
+        visited: Set[str] = set()
+        # Stack items: (url, parent_url, depth)
+        stack: List[Tuple[str, Optional[str], int]] = [(start_url, None, 0)]
+        depths: Dict[str, int] = {start_url: 0}
+        results: List[CrawlResult] = []
+
+        while stack and not self._cancel_event.is_set():
+            url, parent, depth = stack.pop()
+            if url in visited or depth > self.max_depth:
+                continue
+            visited.add(url)
+
+            # Clone config to disable recursive deep crawling.
+            batch_config = config.clone(deep_crawl_strategy=None, stream=False)
+            url_results = await crawler.arun_many(urls=[url], config=batch_config)
+            
+            for result in url_results:
+                result.metadata = result.metadata or {}
+                result.metadata["depth"] = depth
+                result.metadata["parent_url"] = parent
+                if self.url_scorer:
+                    result.metadata["score"] = self.url_scorer.score(url)
+                results.append(result)
+                
+                # Count only successful crawls toward max_pages limit
+                if result.success:
+                    self._pages_crawled += 1
+                    
+                    # Only discover links from successful crawls
+                    new_links: List[Tuple[str, Optional[str]]] = []
+                    await self.link_discovery(result, url, depth, visited, new_links, depths)
+                    
+                    # Push new links in reverse order so the first discovered is processed next.
+                    for new_url, new_parent in reversed(new_links):
+                        new_depth = depths.get(new_url, depth + 1)
+                        stack.append((new_url, new_parent, new_depth))
+        return results
+
+    async def _arun_stream(
+        self,
+        start_url: str,
+        crawler: AsyncWebCrawler,
+        config: CrawlerRunConfig,
+    ) -> AsyncGenerator[CrawlResult, None]:
+        """
+        Streaming DFS mode.
+        Uses a stack to traverse URLs in DFS order and yields CrawlResults as they become available.
+        """
+        visited: Set[str] = set()
+        stack: List[Tuple[str, Optional[str], int]] = [(start_url, None, 0)]
+        depths: Dict[str, int] = {start_url: 0}
+
+        while stack and not self._cancel_event.is_set():
+            url, parent, depth = stack.pop()
+            if url in visited or depth > self.max_depth:
+                continue
+            visited.add(url)
+
+            stream_config = config.clone(deep_crawl_strategy=None, stream=True)
+            stream_gen = await crawler.arun_many(urls=[url], config=stream_config)
+            async for result in stream_gen:
+                result.metadata = result.metadata or {}
+                result.metadata["depth"] = depth
+                result.metadata["parent_url"] = parent
+                if self.url_scorer:
+                    result.metadata["score"] = self.url_scorer.score(url)
+                yield result
+
+                # Only count successful crawls toward max_pages limit
+                # and only discover links from successful crawls
+                if result.success:
+                    self._pages_crawled += 1
+                    
+                    new_links: List[Tuple[str, Optional[str]]] = []
+                    await self.link_discovery(result, url, depth, visited, new_links, depths)
+                    for new_url, new_parent in reversed(new_links):
+                        new_depth = depths.get(new_url, depth + 1)
+                        stack.append((new_url, new_parent, new_depth))

crawl4ai/deep_crawling/filters.py

@@ -0,0 +1,666 @@
+from abc import ABC, abstractmethod
+from typing import List, Pattern, Set, Union
+from urllib.parse import urlparse
+from array import array
+import re
+import logging
+from functools import lru_cache
+import fnmatch
+from dataclasses import dataclass
+import weakref
+import math
+from collections import defaultdict
+from typing import Dict
+from ..utils import HeadPeekr
+import asyncio
+import inspect
+
+
+@dataclass
+class FilterStats:
+    __slots__ = ("_counters",)
+
+    def __init__(self):
+        # Use array of unsigned ints for atomic operations
+        self._counters = array("I", [0, 0, 0])  # total, passed, rejected
+
+    @property
+    def total_urls(self):
+        return self._counters[0]
+
+    @property
+    def passed_urls(self):
+        return self._counters[1]
+
+    @property
+    def rejected_urls(self):
+        return self._counters[2]
+
+
+class URLFilter(ABC):
+    """Optimized base filter class"""
+
+    __slots__ = ("name", "stats", "_logger_ref")
+
+    def __init__(self, name: str = None):
+        self.name = name or self.__class__.__name__
+        self.stats = FilterStats()
+        # Lazy logger initialization using weakref
+        self._logger_ref = None
+
+    @property
+    def logger(self):
+        if self._logger_ref is None or self._logger_ref() is None:
+            logger = logging.getLogger(f"urlfilter.{self.name}")
+            self._logger_ref = weakref.ref(logger)
+        return self._logger_ref()
+
+    @abstractmethod
+    def apply(self, url: str) -> bool:
+        pass
+
+    def _update_stats(self, passed: bool):
+        # Use direct array index for speed
+        self.stats._counters[0] += 1  # total
+        self.stats._counters[1] += passed  # passed
+        self.stats._counters[2] += not passed  # rejected
+
+
+class FilterChain:
+    """Optimized filter chain"""
+
+    __slots__ = ("filters", "stats", "_logger_ref")
+
+    def __init__(self, filters: List[URLFilter] = None):
+        self.filters = tuple(filters or [])  # Immutable tuple for speed
+        self.stats = FilterStats()
+        self._logger_ref = None
+
+    @property
+    def logger(self):
+        if self._logger_ref is None or self._logger_ref() is None:
+            logger = logging.getLogger("urlfilter.chain")
+            self._logger_ref = weakref.ref(logger)
+        return self._logger_ref()
+
+    def add_filter(self, filter_: URLFilter) -> "FilterChain":
+        """Add a filter to the chain"""
+        self.filters.append(filter_)
+        return self  # Enable method chaining
+
+    async def apply(self, url: str) -> bool:
+        """Apply all filters concurrently when possible"""
+        self.stats._counters[0] += 1  # Total processed URLs
+
+        tasks = []
+        for f in self.filters:
+            result = f.apply(url)
+
+            if inspect.isawaitable(result):
+                tasks.append(result)  # Collect async tasks
+            elif not result:  # Sync rejection
+                self.stats._counters[2] += 1  # Sync rejected
+                return False
+
+        if tasks:
+            results = await asyncio.gather(*tasks)
+
+            # Count how many filters rejected
+            rejections = results.count(False)
+            self.stats._counters[2] += rejections
+
+            if not all(results):
+                return False  # Stop early if any filter rejected
+
+        self.stats._counters[1] += 1  # Passed
+        return True
+
+
+class URLPatternFilter(URLFilter):
+    """Pattern filter balancing speed and completeness"""
+
+    __slots__ = (
+        "_simple_suffixes",
+        "_simple_prefixes",
+        "_domain_patterns",
+        "_path_patterns",
+        "_reverse",
+    )
+
+    PATTERN_TYPES = {
+        "SUFFIX": 1,  # *.html
+        "PREFIX": 2,  # /foo/*
+        "DOMAIN": 3,  # *.example.com
+        "PATH": 4,  # Everything else
+        "REGEX": 5,
+    }
+
+    def __init__(
+        self,
+        patterns: Union[str, Pattern, List[Union[str, Pattern]]],
+        use_glob: bool = True,
+        reverse: bool = False,
+    ):
+        super().__init__()
+        self._reverse = reverse
+        patterns = [patterns] if isinstance(patterns, (str, Pattern)) else patterns
+
+        self._simple_suffixes = set()
+        self._simple_prefixes = set()
+        self._domain_patterns = []
+        self._path_patterns = []
+
+        for pattern in patterns:
+            pattern_type = self._categorize_pattern(pattern)
+            self._add_pattern(pattern, pattern_type)
+
+    def _categorize_pattern(self, pattern: str) -> int:
+        """Categorize pattern for specialized handling"""
+        if not isinstance(pattern, str):
+            return self.PATTERN_TYPES["PATH"]
+
+        # Check if it's a regex pattern
+        if pattern.startswith("^") or pattern.endswith("$") or "\\d" in pattern:
+            return self.PATTERN_TYPES["REGEX"]
+
+        if pattern.count("*") == 1:
+            if pattern.startswith("*."):
+                return self.PATTERN_TYPES["SUFFIX"]
+            if pattern.endswith("/*"):
+                return self.PATTERN_TYPES["PREFIX"]
+
+        if "://" in pattern and pattern.startswith("*."):
+            return self.PATTERN_TYPES["DOMAIN"]
+
+        return self.PATTERN_TYPES["PATH"]
+
+    def _add_pattern(self, pattern: str, pattern_type: int):
+        """Add pattern to appropriate matcher"""
+        if pattern_type == self.PATTERN_TYPES["REGEX"]:
+            # For regex patterns, compile directly without glob translation
+            if isinstance(pattern, str) and (
+                pattern.startswith("^") or pattern.endswith("$") or "\\d" in pattern
+            ):
+                self._path_patterns.append(re.compile(pattern))
+                return
+        elif pattern_type == self.PATTERN_TYPES["SUFFIX"]:
+            self._simple_suffixes.add(pattern[2:])
+        elif pattern_type == self.PATTERN_TYPES["PREFIX"]:
+            self._simple_prefixes.add(pattern[:-2])
+        elif pattern_type == self.PATTERN_TYPES["DOMAIN"]:
+            self._domain_patterns.append(re.compile(pattern.replace("*.", r"[^/]+\.")))
+        else:
+            if isinstance(pattern, str):
+                # Handle complex glob patterns
+                if "**" in pattern:
+                    pattern = pattern.replace("**", ".*")
+                if "{" in pattern:
+                    # Convert {a,b} to (a|b)
+                    pattern = re.sub(
+                        r"\{([^}]+)\}",
+                        lambda m: f'({"|".join(m.group(1).split(","))})',
+                        pattern,
+                    )
+                pattern = fnmatch.translate(pattern)
+            self._path_patterns.append(
+                pattern if isinstance(pattern, Pattern) else re.compile(pattern)
+            )
+
+    @lru_cache(maxsize=10000)
+    def apply(self, url: str) -> bool:
+        # Quick suffix check (*.html)
+        if self._simple_suffixes:
+            path = url.split("?")[0]
+            if path.split("/")[-1].split(".")[-1] in self._simple_suffixes:
+                result = True
+                self._update_stats(result)
+                return not result if self._reverse else result
+
+        # Domain check
+        if self._domain_patterns:
+            for pattern in self._domain_patterns:
+                if pattern.match(url):
+                    result = True
+                    self._update_stats(result)
+                    return not result if self._reverse else result
+
+        # Prefix check (/foo/*)
+        if self._simple_prefixes:
+            path = url.split("?")[0]
+            if any(path.startswith(p) for p in self._simple_prefixes):
+                result = True
+                self._update_stats(result)
+                return not result if self._reverse else result
+
+        # Complex patterns
+        if self._path_patterns:
+            if any(p.search(url) for p in self._path_patterns):
+                result = True
+                self._update_stats(result)
+                return not result if self._reverse else result
+
+        result = False
+        self._update_stats(result)
+        return not result if self._reverse else result
+
+
+class ContentTypeFilter(URLFilter):
+    """Optimized content type filter using fast lookups"""
+
+    __slots__ = ("allowed_types", "_ext_map", "_check_extension")
+
+    # Fast extension to mime type mapping
+    _MIME_MAP = {
+        # Text Formats
+        "txt": "text/plain",
+        "html": "text/html",
+        "htm": "text/html",
+        "xhtml": "application/xhtml+xml",
+        "css": "text/css",
+        "csv": "text/csv",
+        "ics": "text/calendar",
+        "js": "application/javascript",
+        # Images
+        "bmp": "image/bmp",
+        "gif": "image/gif",
+        "jpeg": "image/jpeg",
+        "jpg": "image/jpeg",
+        "png": "image/png",
+        "svg": "image/svg+xml",
+        "tiff": "image/tiff",
+        "ico": "image/x-icon",
+        "webp": "image/webp",
+        # Audio
+        "mp3": "audio/mpeg",
+        "wav": "audio/wav",
+        "ogg": "audio/ogg",
+        "m4a": "audio/mp4",
+        "aac": "audio/aac",
+        # Video
+        "mp4": "video/mp4",
+        "mpeg": "video/mpeg",
+        "webm": "video/webm",
+        "avi": "video/x-msvideo",
+        "mov": "video/quicktime",
+        "flv": "video/x-flv",
+        "wmv": "video/x-ms-wmv",
+        "mkv": "video/x-matroska",
+        # Applications
+        "json": "application/json",
+        "xml": "application/xml",
+        "pdf": "application/pdf",
+        "zip": "application/zip",
+        "gz": "application/gzip",
+        "tar": "application/x-tar",
+        "rar": "application/vnd.rar",
+        "7z": "application/x-7z-compressed",
+        "exe": "application/vnd.microsoft.portable-executable",
+        "msi": "application/x-msdownload",
+        # Fonts
+        "woff": "font/woff",
+        "woff2": "font/woff2",
+        "ttf": "font/ttf",
+        "otf": "font/otf",
+        # Microsoft Office
+        "doc": "application/msword",
+        "dot": "application/msword",
+        "docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+        "xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+        "xls": "application/vnd.ms-excel",
+        "ppt": "application/vnd.ms-powerpoint",
+        "pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
+        # OpenDocument Formats
+        "odt": "application/vnd.oasis.opendocument.text",
+        "ods": "application/vnd.oasis.opendocument.spreadsheet",
+        "odp": "application/vnd.oasis.opendocument.presentation",
+        # Archives
+        "tar.gz": "application/gzip",
+        "tgz": "application/gzip",
+        "bz2": "application/x-bzip2",
+        # Others
+        "rtf": "application/rtf",
+        "apk": "application/vnd.android.package-archive",
+        "epub": "application/epub+zip",
+        "jar": "application/java-archive",
+        "swf": "application/x-shockwave-flash",
+        "midi": "audio/midi",
+        "mid": "audio/midi",
+        "ps": "application/postscript",
+        "ai": "application/postscript",
+        "eps": "application/postscript",
+        # Custom or less common
+        "bin": "application/octet-stream",
+        "dmg": "application/x-apple-diskimage",
+        "iso": "application/x-iso9660-image",
+        "deb": "application/x-debian-package",
+        "rpm": "application/x-rpm",
+        "sqlite": "application/vnd.sqlite3",
+        # Placeholder
+        "unknown": "application/octet-stream",  # Fallback for unknown file types
+    }
+
+    @staticmethod
+    @lru_cache(maxsize=1000)
+    def _extract_extension(url: str) -> str:
+        """Extracts file extension from a URL."""
+        # Remove scheme (http://, https://) if present
+        if "://" in url:
+            url = url.split("://", 1)[-1]  # Get everything after '://'
+
+        # Remove domain (everything up to the first '/')
+        path_start = url.find("/")
+        path = url[path_start:] if path_start != -1 else ""
+
+        # Extract last filename in path
+        filename = path.rsplit("/", 1)[-1] if "/" in path else ""
+
+        # Extract and validate extension
+        if "." not in filename:
+            return ""
+
+        return filename.rpartition(".")[-1].lower()
+
+    def __init__(
+        self,
+        allowed_types: Union[str, List[str]],
+        check_extension: bool = True,
+        ext_map: Dict[str, str] = _MIME_MAP,
+    ):
+        super().__init__()
+        # Normalize and store as frozenset for fast lookup
+        self.allowed_types = frozenset(
+            t.lower()
+            for t in (
+                allowed_types if isinstance(allowed_types, list) else [allowed_types]
+            )
+        )
+        self._check_extension = check_extension
+
+        # Pre-compute extension map for allowed types
+        self._ext_map = frozenset(
+            ext
+            for ext, mime in self._MIME_MAP.items()
+            if any(allowed in mime for allowed in self.allowed_types)
+        )
+
+    @lru_cache(maxsize=1000)
+    def _check_url_cached(self, url: str) -> bool:
+        """Cached URL checking"""
+        if not self._check_extension:
+            return True
+        ext = self._extract_extension(url)
+        if not ext:
+            return True
+
+        return ext in self._ext_map
+
+    def apply(self, url: str) -> bool:
+        """Fast extension check with caching"""
+        result = self._check_url_cached(url)
+        self._update_stats(result)
+        return result
+
+
+class DomainFilter(URLFilter):
+    """Optimized domain filter with fast lookups and caching"""
+
+    __slots__ = ("_allowed_domains", "_blocked_domains", "_domain_cache")
+
+    # Regex for fast domain extraction
+    _DOMAIN_REGEX = re.compile(r"://([^/]+)")
+
+    def __init__(
+        self,
+        allowed_domains: Union[str, List[str]] = None,
+        blocked_domains: Union[str, List[str]] = None,
+    ):
+        super().__init__()
+
+        # Convert inputs to frozensets for immutable, fast lookups
+        self._allowed_domains = (
+            frozenset(self._normalize_domains(allowed_domains))
+            if allowed_domains
+            else None
+        )
+        self._blocked_domains = (
+            frozenset(self._normalize_domains(blocked_domains))
+            if blocked_domains
+            else frozenset()
+        )
+
+    @staticmethod
+    def _normalize_domains(domains: Union[str, List[str]]) -> Set[str]:
+        """Fast domain normalization"""
+        if isinstance(domains, str):
+            return {domains.lower()}
+        return {d.lower() for d in domains}
+    
+    @staticmethod
+    def _is_subdomain(domain: str, parent_domain: str) -> bool:
+        """Check if domain is a subdomain of parent_domain"""
+        return domain == parent_domain or domain.endswith(f".{parent_domain}")
+
+    @staticmethod
+    @lru_cache(maxsize=10000)
+    def _extract_domain(url: str) -> str:
+        """Ultra-fast domain extraction with regex and caching"""
+        match = DomainFilter._DOMAIN_REGEX.search(url)
+        return match.group(1).lower() if match else ""
+
+    def apply(self, url: str) -> bool:
+        """Optimized domain checking with early returns"""
+        # Skip processing if no filters
+        if not self._blocked_domains and self._allowed_domains is None:
+            self._update_stats(True)
+            return True
+
+        domain = self._extract_domain(url)
+
+        # Check for blocked domains, including subdomains
+        for blocked in self._blocked_domains:
+            if self._is_subdomain(domain, blocked):
+                self._update_stats(False)
+                return False
+
+        # If no allowed domains specified, accept all non-blocked
+        if self._allowed_domains is None:
+            self._update_stats(True)
+            return True
+
+        # Check if domain matches any allowed domain (including subdomains)
+        for allowed in self._allowed_domains:
+            if self._is_subdomain(domain, allowed):
+                self._update_stats(True)
+                return True
+
+        # No matches found
+        self._update_stats(False)
+        return False
+
+
+class ContentRelevanceFilter(URLFilter):
+    """BM25-based relevance filter using head section content"""
+
+    __slots__ = ("query_terms", "threshold", "k1", "b", "avgdl")
+
+    def __init__(
+        self,
+        query: str,
+        threshold: float,
+        k1: float = 1.2,
+        b: float = 0.75,
+        avgdl: int = 1000,
+    ):
+        super().__init__(name="BM25RelevanceFilter")
+        self.query_terms = self._tokenize(query)
+        self.threshold = threshold
+        self.k1 = k1  # TF saturation parameter
+        self.b = b  # Length normalization parameter
+        self.avgdl = avgdl  # Average document length (empirical value)
+
+    async def apply(self, url: str) -> bool:
+        head_content = await HeadPeekr.peek_html(url)
+        if not head_content:
+            self._update_stats(False)
+            return False
+
+        # Field extraction with weighting
+        fields = {
+            "title": HeadPeekr.get_title(head_content) or "",
+            "meta": HeadPeekr.extract_meta_tags(head_content),
+        }
+        doc_text = self._build_document(fields)
+
+        score = self._bm25(doc_text)
+        decision = score >= self.threshold
+        self._update_stats(decision)
+        return decision
+
+    def _build_document(self, fields: Dict) -> str:
+        """Weighted document construction"""
+        return " ".join(
+            [
+                fields["title"] * 3,  # Title weight
+                fields["meta"].get("description", "") * 2,
+                fields["meta"].get("keywords", ""),
+                " ".join(fields["meta"].values()),
+            ]
+        )
+
+    def _tokenize(self, text: str) -> List[str]:
+        """Fast case-insensitive tokenization"""
+        return text.lower().split()
+
+    def _bm25(self, document: str) -> float:
+        """Optimized BM25 implementation for head sections"""
+        doc_terms = self._tokenize(document)
+        doc_len = len(doc_terms)
+        tf = defaultdict(int)
+
+        for term in doc_terms:
+            tf[term] += 1
+
+        score = 0.0
+        for term in set(self.query_terms):
+            term_freq = tf[term]
+            idf = math.log((1 + 1) / (term_freq + 0.5) + 1)  # Simplified IDF
+            numerator = term_freq * (self.k1 + 1)
+            denominator = term_freq + self.k1 * (
+                1 - self.b + self.b * (doc_len / self.avgdl)
+            )
+            score += idf * (numerator / denominator)
+
+        return score
+
+
+class SEOFilter(URLFilter):
+    """Quantitative SEO quality assessment filter using head section analysis"""
+
+    __slots__ = ("threshold", "_weights", "_kw_patterns")
+
+    # Based on SEMrush/Google ranking factors research
+    DEFAULT_WEIGHTS = {
+        "title_length": 0.15,
+        "title_kw": 0.18,
+        "meta_description": 0.12,
+        "canonical": 0.10,
+        "robot_ok": 0.20,  # Most critical factor
+        "schema_org": 0.10,
+        "url_quality": 0.15,
+    }
+
+    def __init__(
+        self,
+        threshold: float = 0.65,
+        keywords: List[str] = None,
+        weights: Dict[str, float] = None,
+    ):
+        super().__init__(name="SEOFilter")
+        self.threshold = threshold
+        self._weights = weights or self.DEFAULT_WEIGHTS
+        self._kw_patterns = (
+            re.compile(
+                r"\b({})\b".format("|".join(map(re.escape, keywords or []))), re.I
+            )
+            if keywords
+            else None
+        )
+
+    async def apply(self, url: str) -> bool:
+        head_content = await HeadPeekr.peek_html(url)
+        if not head_content:
+            self._update_stats(False)
+            return False
+
+        meta = HeadPeekr.extract_meta_tags(head_content)
+        title = HeadPeekr.get_title(head_content) or ""
+        parsed_url = urlparse(url)
+
+        scores = {
+            "title_length": self._score_title_length(title),
+            "title_kw": self._score_keyword_presence(title),
+            "meta_description": self._score_meta_description(
+                meta.get("description", "")
+            ),
+            "canonical": self._score_canonical(meta.get("canonical"), url),
+            "robot_ok": 1.0 if "noindex" not in meta.get("robots", "") else 0.0,
+            "schema_org": self._score_schema_org(head_content),
+            "url_quality": self._score_url_quality(parsed_url),
+        }
+
+        total_score = sum(
+            weight * scores[factor] for factor, weight in self._weights.items()
+        )
+
+        decision = total_score >= self.threshold
+        self._update_stats(decision)
+        return decision
+
+    def _score_title_length(self, title: str) -> float:
+        length = len(title)
+        if 50 <= length <= 60:
+            return 1.0
+        if 40 <= length < 50 or 60 < length <= 70:
+            return 0.7
+        return 0.3  # Poor length
+
+    def _score_keyword_presence(self, text: str) -> float:
+        if not self._kw_patterns:
+            return 0.0
+        matches = len(self._kw_patterns.findall(text))
+        return min(matches * 0.3, 1.0)  # Max 3 matches
+
+    def _score_meta_description(self, desc: str) -> float:
+        length = len(desc)
+        if 140 <= length <= 160:
+            return 1.0
+        return 0.5 if 120 <= length <= 200 else 0.2
+
+    def _score_canonical(self, canonical: str, original: str) -> float:
+        if not canonical:
+            return 0.5  # Neutral score
+        return 1.0 if canonical == original else 0.2
+
+    def _score_schema_org(self, html: str) -> float:
+        # Detect any schema.org markup in head
+        return (
+            1.0
+            if re.search(r'<script[^>]+type=["\']application/ld\+json', html)
+            else 0.0
+        )
+
+    def _score_url_quality(self, parsed_url) -> float:
+        score = 1.0
+        path = parsed_url.path.lower()
+
+        # Penalty factors
+        if len(path) > 80:
+            score *= 0.7
+        if re.search(r"\d{4}", path):
+            score *= 0.8  # Numbers in path
+        if parsed_url.query:
+            score *= 0.6  # URL parameters
+        if "_" in path:
+            score *= 0.9  # Underscores vs hyphens
+
+        return score

crawl4ai/deep_crawling/scorers.py

@@ -0,0 +1,519 @@
+from abc import ABC, abstractmethod
+from typing import List, Dict, Optional
+from dataclasses import dataclass
+from urllib.parse import urlparse, unquote
+import re
+import logging
+from functools import lru_cache
+from array import array
+import ctypes
+import platform
+PLATFORM = platform.system()
+
+# Pre-computed scores for common year differences
+_SCORE_LOOKUP = [1.0, 0.5, 0.3333333333333333, 0.25]
+
+# Pre-computed scores for common year differences
+_FRESHNESS_SCORES = [
+   1.0,    # Current year
+   0.9,    # Last year
+   0.8,    # 2 years ago
+   0.7,    # 3 years ago
+   0.6,    # 4 years ago
+   0.5,    # 5 years ago
+]
+
+class ScoringStats:
+    __slots__ = ('_urls_scored', '_total_score', '_min_score', '_max_score')
+    
+    def __init__(self):
+        self._urls_scored = 0
+        self._total_score = 0.0
+        self._min_score = None  # Lazy initialization
+        self._max_score = None
+    
+    def update(self, score: float) -> None:
+        """Optimized update with minimal operations"""
+        self._urls_scored += 1
+        self._total_score += score
+        
+        # Lazy min/max tracking - only if actually accessed
+        if self._min_score is not None:
+            if score < self._min_score:
+                self._min_score = score
+        if self._max_score is not None:
+            if score > self._max_score:
+                self._max_score = score
+                
+    def get_average(self) -> float:
+        """Direct calculation instead of property"""
+        return self._total_score / self._urls_scored if self._urls_scored else 0.0
+    
+    def get_min(self) -> float:
+        """Lazy min calculation"""
+        if self._min_score is None:
+            self._min_score = self._total_score / self._urls_scored if self._urls_scored else 0.0
+        return self._min_score
+        
+    def get_max(self) -> float:
+        """Lazy max calculation"""
+        if self._max_score is None:
+            self._max_score = self._total_score / self._urls_scored if self._urls_scored else 0.0
+        return self._max_score
+class URLScorer(ABC):
+    __slots__ = ('_weight', '_stats')
+    
+    def __init__(self, weight: float = 1.0):
+        # Store weight directly as float32 for memory efficiency
+        self._weight = ctypes.c_float(weight).value
+        self._stats = ScoringStats()
+    
+    @abstractmethod
+    def _calculate_score(self, url: str) -> float:
+        """Calculate raw score for URL."""
+        pass
+    
+    def score(self, url: str) -> float:
+        """Calculate weighted score with minimal overhead."""
+        score = self._calculate_score(url) * self._weight
+        self._stats.update(score)
+        return score
+    
+    @property
+    def stats(self):
+        """Access to scoring statistics."""
+        return self._stats
+    
+    @property
+    def weight(self):
+        return self._weight
+
+class CompositeScorer(URLScorer):
+    __slots__ = ('_scorers', '_normalize', '_weights_array', '_score_array')
+    
+    def __init__(self, scorers: List[URLScorer], normalize: bool = True):
+        """Initialize composite scorer combining multiple scoring strategies.
+        
+        Optimized for:
+        - Fast parallel scoring
+        - Memory efficient score aggregation
+        - Quick short-circuit conditions
+        - Pre-allocated arrays
+        
+        Args:
+            scorers: List of scoring strategies to combine
+            normalize: Whether to normalize final score by scorer count
+        """
+        super().__init__(weight=1.0)
+        self._scorers = scorers
+        self._normalize = normalize
+        
+        # Pre-allocate arrays for scores and weights
+        self._weights_array = array('f', [s.weight for s in scorers])
+        self._score_array = array('f', [0.0] * len(scorers))
+
+    @lru_cache(maxsize=10000)
+    def _calculate_score(self, url: str) -> float:
+        """Calculate combined score from all scoring strategies.
+        
+        Uses:
+        1. Pre-allocated arrays for scores
+        2. Short-circuit on zero scores
+        3. Optimized normalization
+        4. Vectorized operations where possible
+        
+        Args:
+            url: URL to score
+            
+        Returns:
+            Combined and optionally normalized score
+        """
+        total_score = 0.0
+        scores = self._score_array
+        
+        # Get scores from all scorers
+        for i, scorer in enumerate(self._scorers):
+            # Use public score() method which applies weight
+            scores[i] = scorer.score(url)
+            total_score += scores[i]
+            
+        # Normalize if requested
+        if self._normalize and self._scorers:
+            count = len(self._scorers)
+            return total_score / count
+            
+        return total_score
+
+    def score(self, url: str) -> float:
+        """Public scoring interface with stats tracking.
+        
+        Args:
+            url: URL to score
+            
+        Returns:
+            Final combined score
+        """
+        score = self._calculate_score(url)
+        self.stats.update(score)
+        return score
+
+class KeywordRelevanceScorer(URLScorer):
+    __slots__ = ('_weight', '_stats', '_keywords', '_case_sensitive')
+    
+    def __init__(self, keywords: List[str], weight: float = 1.0, case_sensitive: bool = False):
+        super().__init__(weight=weight)
+        self._case_sensitive = case_sensitive
+        # Pre-process keywords once
+        self._keywords = [k if case_sensitive else k.lower() for k in keywords]
+    
+    @lru_cache(maxsize=10000)
+    def _url_bytes(self, url: str) -> bytes:
+        """Cache decoded URL bytes"""
+        return url.encode('utf-8') if self._case_sensitive else url.lower().encode('utf-8')
+    
+    
+    def _calculate_score(self, url: str) -> float:
+        """Fast string matching without regex or byte conversion"""
+        if not self._case_sensitive:
+            url = url.lower()
+            
+        matches = sum(1 for k in self._keywords if k in url)
+        
+        # Fast return paths
+        if not matches:
+            return 0.0
+        if matches == len(self._keywords):
+            return 1.0
+            
+        return matches / len(self._keywords)
+
+class PathDepthScorer(URLScorer):
+    __slots__ = ('_weight', '_stats', '_optimal_depth')  # Remove _url_cache
+    
+    def __init__(self, optimal_depth: int = 3, weight: float = 1.0):
+        super().__init__(weight=weight)
+        self._optimal_depth = optimal_depth
+
+    @staticmethod
+    @lru_cache(maxsize=10000)
+    def _quick_depth(path: str) -> int:
+        """Ultra fast path depth calculation.
+        
+        Examples:
+            - "http://example.com" -> 0  # No path segments
+            - "http://example.com/" -> 0  # Empty path
+            - "http://example.com/a" -> 1
+            - "http://example.com/a/b" -> 2
+        """
+        if not path or path == '/':
+            return 0
+            
+        if '/' not in path:
+            return 0
+            
+        depth = 0
+        last_was_slash = True
+        
+        for c in path:
+            if c == '/':
+                if not last_was_slash:
+                    depth += 1
+                last_was_slash = True
+            else:
+                last_was_slash = False
+                
+        if not last_was_slash:
+            depth += 1
+            
+        return depth
+
+    @lru_cache(maxsize=10000)  # Cache the whole calculation
+    def _calculate_score(self, url: str) -> float:
+        pos = url.find('/', url.find('://') + 3)
+        if pos == -1:
+            depth = 0
+        else:
+            depth = self._quick_depth(url[pos:])
+            
+        # Use lookup table for common distances
+        distance = depth - self._optimal_depth
+        distance = distance if distance >= 0 else -distance  # Faster than abs()
+        
+        if distance < 4:
+            return _SCORE_LOOKUP[distance]
+            
+        return 1.0 / (1.0 + distance)                                             
+
+class ContentTypeScorer(URLScorer):
+    __slots__ = ('_weight', '_exact_types', '_regex_types')
+
+    def __init__(self, type_weights: Dict[str, float], weight: float = 1.0):
+        """Initialize scorer with type weights map.
+        
+        Args:
+            type_weights: Dict mapping file extensions/patterns to scores (e.g. {'.html$': 1.0})
+            weight: Overall weight multiplier for this scorer
+        """
+        super().__init__(weight=weight)
+        self._exact_types = {}  # Fast lookup for simple extensions
+        self._regex_types = []  # Fallback for complex patterns
+        
+        # Split into exact vs regex matchers for performance
+        for pattern, score in type_weights.items():
+            if pattern.startswith('.') and pattern.endswith('$'):
+                ext = pattern[1:-1]
+                self._exact_types[ext] = score
+            else:
+                self._regex_types.append((re.compile(pattern), score))
+                
+        # Sort complex patterns by score for early exit
+        self._regex_types.sort(key=lambda x: -x[1])
+
+    @staticmethod
+    @lru_cache(maxsize=10000)
+    def _quick_extension(url: str) -> str:
+        """Extract file extension ultra-fast without regex/splits.
+        
+        Handles:
+        - Basic extensions: "example.html" -> "html"
+        - Query strings: "page.php?id=1" -> "php" 
+        - Fragments: "doc.pdf#page=1" -> "pdf"
+        - Path params: "file.jpg;width=100" -> "jpg"
+        
+        Args:
+            url: URL to extract extension from
+            
+        Returns:
+            Extension without dot, or empty string if none found
+        """
+        pos = url.rfind('.')
+        if pos == -1:
+            return ''
+        
+        # Find first non-alphanumeric char after extension
+        end = len(url)
+        for i in range(pos + 1, len(url)):
+            c = url[i]
+            # Stop at query string, fragment, path param or any non-alphanumeric
+            if c in '?#;' or not c.isalnum():
+                end = i
+                break
+                
+        return url[pos + 1:end].lower()
+
+    @lru_cache(maxsize=10000)
+    def _calculate_score(self, url: str) -> float:
+        """Calculate content type score for URL.
+        
+        Uses staged approach:
+        1. Try exact extension match (fast path)
+        2. Fall back to regex patterns if needed
+        
+        Args:
+            url: URL to score
+            
+        Returns:
+            Score between 0.0 and 1.0 * weight
+        """
+        # Fast path: direct extension lookup
+        ext = self._quick_extension(url)
+        if ext:
+            score = self._exact_types.get(ext, None)
+            if score is not None:
+                return score
+                
+        # Slow path: regex patterns
+        for pattern, score in self._regex_types:
+            if pattern.search(url):
+                return score
+
+        return 0.0
+
+class FreshnessScorer(URLScorer):
+    __slots__ = ('_weight', '_date_pattern', '_current_year')
+
+    def __init__(self, weight: float = 1.0, current_year: int = 2024):
+        """Initialize freshness scorer.
+        
+        Extracts and scores dates from URLs using format:
+        - YYYY/MM/DD 
+        - YYYY-MM-DD
+        - YYYY_MM_DD
+        - YYYY (year only)
+        
+        Args:
+            weight: Score multiplier
+            current_year: Year to calculate freshness against (default 2024)
+        """
+        super().__init__(weight=weight)
+        self._current_year = current_year
+        
+        # Combined pattern for all date formats
+        # Uses non-capturing groups (?:) and alternation
+        self._date_pattern = re.compile(
+            r'(?:/'  # Path separator
+            r'|[-_])'  # or date separators
+            r'((?:19|20)\d{2})'  # Year group (1900-2099)
+            r'(?:'  # Optional month/day group
+            r'(?:/|[-_])'  # Date separator  
+            r'(?:\d{2})'  # Month
+            r'(?:'  # Optional day
+            r'(?:/|[-_])'  # Date separator
+            r'(?:\d{2})'  # Day
+            r')?'  # Day is optional
+            r')?'  # Month/day group is optional
+        )
+
+    @lru_cache(maxsize=10000)
+    def _extract_year(self, url: str) -> Optional[int]:
+        """Extract the most recent year from URL.
+        
+        Args:
+            url: URL to extract year from
+            
+        Returns:
+            Year as int or None if no valid year found
+        """
+        matches = self._date_pattern.finditer(url)
+        latest_year = None
+        
+        # Find most recent year
+        for match in matches:
+            year = int(match.group(1))
+            if (year <= self._current_year and  # Sanity check
+                (latest_year is None or year > latest_year)):
+                latest_year = year
+                
+        return latest_year
+
+    @lru_cache(maxsize=10000) 
+    def _calculate_score(self, url: str) -> float:
+        """Calculate freshness score based on URL date.
+        
+        More recent years score higher. Uses pre-computed scoring
+        table for common year differences.
+        
+        Args:
+            url: URL to score
+            
+        Returns:
+            Score between 0.0 and 1.0 * weight
+        """
+        year = self._extract_year(url)
+        if year is None:
+            return 0.5  # Default score
+            
+        # Use lookup table for common year differences
+        year_diff = self._current_year - year
+        if year_diff < len(_FRESHNESS_SCORES):
+            return _FRESHNESS_SCORES[year_diff]
+            
+        # Fallback calculation for older content
+        return max(0.1, 1.0 - year_diff * 0.1)
+
+class DomainAuthorityScorer(URLScorer):
+    __slots__ = ('_weight', '_domain_weights', '_default_weight', '_top_domains')
+    
+    def __init__(
+        self,
+        domain_weights: Dict[str, float],
+        default_weight: float = 0.5,
+        weight: float = 1.0,
+    ):
+        """Initialize domain authority scorer.
+        
+        Args:
+            domain_weights: Dict mapping domains to authority scores
+            default_weight: Score for unknown domains
+            weight: Overall scorer weight multiplier
+            
+        Example:
+            {
+                'python.org': 1.0,
+                'github.com': 0.9,
+                'medium.com': 0.7
+            }
+        """
+        super().__init__(weight=weight)
+        
+        # Pre-process domains for faster lookup
+        self._domain_weights = {
+            domain.lower(): score 
+            for domain, score in domain_weights.items()
+        }
+        self._default_weight = default_weight
+        
+        # Cache top domains for fast path
+        self._top_domains = {
+            domain: score
+            for domain, score in sorted(
+                domain_weights.items(), 
+                key=lambda x: -x[1]
+            )[:5]  # Keep top 5 highest scoring domains
+        }
+
+    @staticmethod
+    @lru_cache(maxsize=10000)
+    def _extract_domain(url: str) -> str:
+        """Extract domain from URL ultra-fast.
+        
+        Handles:
+        - Basic domains: "example.com"
+        - Subdomains: "sub.example.com" 
+        - Ports: "example.com:8080"
+        - IPv4: "192.168.1.1"
+        
+        Args:
+            url: Full URL to extract domain from
+            
+        Returns:
+            Lowercase domain without port
+        """
+        # Find domain start
+        start = url.find('://') 
+        if start == -1:
+            start = 0
+        else:
+            start += 3
+            
+        # Find domain end
+        end = url.find('/', start)
+        if end == -1:
+            end = url.find('?', start)
+            if end == -1:
+                end = url.find('#', start)
+                if end == -1:
+                    end = len(url)
+                    
+        # Extract domain and remove port
+        domain = url[start:end]
+        port_idx = domain.rfind(':')
+        if port_idx != -1:
+            domain = domain[:port_idx]
+            
+        return domain.lower()
+
+    @lru_cache(maxsize=10000)
+    def _calculate_score(self, url: str) -> float:
+        """Calculate domain authority score.
+        
+        Uses staged approach:
+        1. Check top domains (fastest)
+        2. Check full domain weights
+        3. Return default weight
+        
+        Args:
+            url: URL to score
+            
+        Returns:
+            Authority score between 0.0 and 1.0 * weight
+        """
+        domain = self._extract_domain(url)
+        
+        # Fast path: check top domains first
+        score = self._top_domains.get(domain)
+        if score is not None:
+            return score
+            
+        # Regular path: check all domains
+        return self._domain_weights.get(domain, self._default_weight)

crawl4ai/docker_client.py

@@ -0,0 +1,170 @@
+from typing import List, Optional, Union, AsyncGenerator, Dict, Any
+import httpx
+import json
+from urllib.parse import urljoin
+import asyncio
+
+from .async_configs import BrowserConfig, CrawlerRunConfig
+from .models import CrawlResult
+from .async_logger import AsyncLogger, LogLevel
+
+
+class Crawl4aiClientError(Exception):
+    """Base exception for Crawl4ai Docker client errors."""
+    pass
+
+
+class ConnectionError(Crawl4aiClientError):
+    """Raised when connection to the Docker server fails."""
+    pass
+
+
+class RequestError(Crawl4aiClientError):
+    """Raised when the server returns an error response."""
+    pass
+
+
+class Crawl4aiDockerClient:
+    """Client for interacting with Crawl4AI Docker server with token authentication."""
+    
+    def __init__(
+        self,
+        base_url: str = "http://localhost:8000",
+        timeout: float = 30.0,
+        verify_ssl: bool = True,
+        verbose: bool = True,
+        log_file: Optional[str] = None
+    ):
+        self.base_url = base_url.rstrip('/')
+        self.timeout = timeout
+        self.logger = AsyncLogger(log_file=log_file, log_level=LogLevel.DEBUG, verbose=verbose)
+        self._http_client = httpx.AsyncClient(
+            timeout=timeout,
+            verify=verify_ssl,
+            headers={"Content-Type": "application/json"}
+        )
+        self._token: Optional[str] = None
+
+    async def authenticate(self, email: str) -> None:
+        """Authenticate with the server and store the token."""
+        url = urljoin(self.base_url, "/token")
+        try:
+            self.logger.info(f"Authenticating with email: {email}", tag="AUTH")
+            response = await self._http_client.post(url, json={"email": email})
+            response.raise_for_status()
+            data = response.json()
+            self._token = data["access_token"]
+            self._http_client.headers["Authorization"] = f"Bearer {self._token}"
+            self.logger.success("Authentication successful", tag="AUTH")
+        except (httpx.RequestError, httpx.HTTPStatusError) as e:
+            error_msg = f"Authentication failed: {str(e)}"
+            self.logger.error(error_msg, tag="ERROR")
+            raise ConnectionError(error_msg)
+
+    async def _check_server(self) -> None:
+        """Check if server is reachable, raising an error if not."""
+        try:
+            await self._http_client.get(urljoin(self.base_url, "/health"))
+            self.logger.success(f"Connected to {self.base_url}", tag="READY")
+        except httpx.RequestError as e:
+            self.logger.error(f"Server unreachable: {str(e)}", tag="ERROR")
+            raise ConnectionError(f"Cannot connect to server: {str(e)}")
+
+    def _prepare_request(self, urls: List[str], browser_config: Optional[BrowserConfig] = None, 
+                       crawler_config: Optional[CrawlerRunConfig] = None) -> Dict[str, Any]:
+        """Prepare request data from configs."""
+        return {
+            "urls": urls,
+            "browser_config": browser_config.dump() if browser_config else {},
+            "crawler_config": crawler_config.dump() if crawler_config else {}
+        }
+
+    async def _request(self, method: str, endpoint: str, **kwargs) -> httpx.Response:
+        """Make an HTTP request with error handling."""
+        url = urljoin(self.base_url, endpoint)
+        try:
+            response = await self._http_client.request(method, url, **kwargs)
+            response.raise_for_status()
+            return response
+        except httpx.TimeoutException as e:
+            raise ConnectionError(f"Request timed out: {str(e)}")
+        except httpx.RequestError as e:
+            raise ConnectionError(f"Failed to connect: {str(e)}")
+        except httpx.HTTPStatusError as e:
+            error_msg = (e.response.json().get("detail", str(e)) 
+                        if "application/json" in e.response.headers.get("content-type", "") 
+                        else str(e))
+            raise RequestError(f"Server error {e.response.status_code}: {error_msg}")
+
+    async def crawl(
+        self,
+        urls: List[str],
+        browser_config: Optional[BrowserConfig] = None,
+        crawler_config: Optional[CrawlerRunConfig] = None
+    ) -> Union[CrawlResult, List[CrawlResult], AsyncGenerator[CrawlResult, None]]:
+        """Execute a crawl operation."""
+        if not self._token:
+            raise Crawl4aiClientError("Authentication required. Call authenticate() first.")
+        await self._check_server()
+        
+        data = self._prepare_request(urls, browser_config, crawler_config)
+        is_streaming = crawler_config and crawler_config.stream
+        
+        self.logger.info(f"Crawling {len(urls)} URLs {'(streaming)' if is_streaming else ''}", tag="CRAWL")
+        
+        if is_streaming:
+            async def stream_results() -> AsyncGenerator[CrawlResult, None]:
+                async with self._http_client.stream("POST", f"{self.base_url}/crawl/stream", json=data) as response:
+                    response.raise_for_status()
+                    async for line in response.aiter_lines():
+                        if line.strip():
+                            result = json.loads(line)
+                            if "error" in result:
+                                self.logger.error_status(url=result.get("url", "unknown"), error=result["error"])
+                                continue
+                            self.logger.url_status(url=result.get("url", "unknown"), success=True, timing=result.get("timing", 0.0))
+                            if result.get("status") == "completed":
+                                continue
+                            else:
+                                yield CrawlResult(**result)
+            return stream_results()
+        
+        response = await self._request("POST", "/crawl", json=data)
+        result_data = response.json()
+        if not result_data.get("success", False):
+            raise RequestError(f"Crawl failed: {result_data.get('msg', 'Unknown error')}")
+        
+        results = [CrawlResult(**r) for r in result_data.get("results", [])]
+        self.logger.success(f"Crawl completed with {len(results)} results", tag="CRAWL")
+        return results[0] if len(results) == 1 else results
+
+    async def get_schema(self) -> Dict[str, Any]:
+        """Retrieve configuration schemas."""
+        if not self._token:
+            raise Crawl4aiClientError("Authentication required. Call authenticate() first.")
+        response = await self._request("GET", "/schema")
+        return response.json()
+
+    async def close(self) -> None:
+        """Close the HTTP client session."""
+        self.logger.info("Closing client", tag="CLOSE")
+        await self._http_client.aclose()
+
+    async def __aenter__(self) -> "Crawl4aiDockerClient":
+        return self
+
+    async def __aexit__(self, exc_type: Optional[type], exc_val: Optional[Exception], exc_tb: Optional[Any]) -> None:
+        await self.close()
+
+
+# Example usage
+async def main():
+    async with Crawl4aiDockerClient(verbose=True) as client:
+        await client.authenticate("user@example.com")
+        result = await client.crawl(["https://example.com"])
+        print(result)
+        schema = await client.get_schema()
+        print(schema)
+
+if __name__ == "__main__":
+    asyncio.run(main())

crawl4ai/extraction_strategy.py

@@ -1,14 +1,13 @@
 from abc import ABC, abstractmethod
+import inspect
 from typing import Any, List, Dict, Optional
 from concurrent.futures import ThreadPoolExecutor, as_completed
 import json
 import time
-import os
 
 from .prompts import PROMPT_EXTRACT_BLOCKS, PROMPT_EXTRACT_BLOCKS_WITH_INSTRUCTION, PROMPT_EXTRACT_SCHEMA_WITH_INSTRUCTION, JSON_SCHEMA_BUILDER_XPATH
 from .config import (
-    DEFAULT_PROVIDER, PROVIDER_MODELS, 
-    CHUNK_TOKEN_THRESHOLD,
+    DEFAULT_PROVIDER, CHUNK_TOKEN_THRESHOLD,
     OVERLAP_RATE,
     WORD_TOKEN_RATE,
 )
@@ -21,6 +20,7 @@ from .utils import (
     extract_xml_data,
     split_and_parse_json_objects,
     sanitize_input_encode,
+    merge_chunks,
 )
 from .models import * # noqa: F403
 
@@ -34,8 +34,9 @@ from .model_loader import (
     calculate_batch_size
 )
 
+from .types import LLMConfig
+
 from functools import partial
-import math
 import numpy as np
 import re
 from bs4 import BeautifulSoup
@@ -477,8 +478,7 @@ class LLMExtractionStrategy(ExtractionStrategy):
     A strategy that uses an LLM to extract meaningful content from the HTML.
 
     Attributes:
-        provider: The provider to use for extraction. It follows the format <provider_name>/<model_name>, e.g., "ollama/llama3.3".
-        api_token: The API token for the provider.
+        llm_config: The LLM configuration object.
         instruction: The instruction to use for the LLM model.
         schema: Pydantic model schema for structured data.
         extraction_type: "block" or "schema".
@@ -486,29 +486,40 @@ class LLMExtractionStrategy(ExtractionStrategy):
         overlap_rate: Overlap between chunks.
         word_token_rate: Word to token conversion rate.
         apply_chunking: Whether to apply chunking.
-        base_url: The base URL for the API request.
-        api_base: The base URL for the API request.
-        extra_args: Additional arguments for the API request, such as temprature, max_tokens, etc.
         verbose: Whether to print verbose output.
         usages: List of individual token usages.
         total_usage: Accumulated token usage.
     """
-
+    _UNWANTED_PROPS = {
+            'provider' : 'Instead, use llm_config=LLMConfig(provider="...")',
+            'api_token' : 'Instead, use llm_config=LlMConfig(api_token="...")',
+            'base_url' : 'Instead, use llm_config=LLMConfig(base_url="...")',
+            'api_base' : 'Instead, use llm_config=LLMConfig(base_url="...")',
+        }
     def __init__(
         self,
-        provider: str = DEFAULT_PROVIDER,
-        api_token: Optional[str] = None,
+        llm_config: 'LLMConfig' = None,
         instruction: str = None,
         schema: Dict = None,
         extraction_type="block",
+        chunk_token_threshold=CHUNK_TOKEN_THRESHOLD,
+        overlap_rate=OVERLAP_RATE,
+        word_token_rate=WORD_TOKEN_RATE,
+        apply_chunking=True,
+        input_format: str = "markdown",
+        verbose=False,
+        # Deprecated arguments
+        provider: str = DEFAULT_PROVIDER,
+        api_token: Optional[str] = None,
+        base_url: str = None,
+        api_base: str = None,
         **kwargs,
     ):
         """
         Initialize the strategy with clustering parameters.
 
         Args:
-            provider: The provider to use for extraction. It follows the format <provider_name>/<model_name>, e.g., "ollama/llama3.3".
-            api_token: The API token for the provider.
+            llm_config: The LLM configuration object.
             instruction: The instruction to use for the LLM model.
             schema: Pydantic model schema for structured data.
             extraction_type: "block" or "schema".
@@ -516,48 +527,52 @@ class LLMExtractionStrategy(ExtractionStrategy):
             overlap_rate: Overlap between chunks.
             word_token_rate: Word to token conversion rate.
             apply_chunking: Whether to apply chunking.
-            base_url: The base URL for the API request.
-            api_base: The base URL for the API request.
-            extra_args: Additional arguments for the API request, such as temprature, max_tokens, etc.
             verbose: Whether to print verbose output.
             usages: List of individual token usages.
             total_usage: Accumulated token usage.
 
+            # Deprecated arguments, will be removed very soon
+            provider: The provider to use for extraction. It follows the format <provider_name>/<model_name>, e.g., "ollama/llama3.3".
+            api_token: The API token for the provider.
+            base_url: The base URL for the API request.
+            api_base: The base URL for the API request.
+            extra_args: Additional arguments for the API request, such as temprature, max_tokens, etc.
         """
-        super().__init__(**kwargs)
-        self.provider = provider
-        self.api_token = (
-            api_token
-            or PROVIDER_MODELS.get(provider, "no-token")
-            or os.getenv("OPENAI_API_KEY")
-        )
+        super().__init__( input_format=input_format, **kwargs)
+        self.llm_config = llm_config
         self.instruction = instruction
         self.extract_type = extraction_type
         self.schema = schema
         if schema:
             self.extract_type = "schema"
-
-        self.chunk_token_threshold = kwargs.get(
-            "chunk_token_threshold", CHUNK_TOKEN_THRESHOLD
-        )
-        self.overlap_rate = kwargs.get("overlap_rate", OVERLAP_RATE)
-        self.word_token_rate = kwargs.get("word_token_rate", WORD_TOKEN_RATE)
-        self.apply_chunking = kwargs.get("apply_chunking", True)
-        self.base_url = kwargs.get("base_url", None)
-        self.api_base = kwargs.get("api_base", kwargs.get("base_url", None))
+        self.chunk_token_threshold = chunk_token_threshold or CHUNK_TOKEN_THRESHOLD
+        self.overlap_rate = overlap_rate
+        self.word_token_rate = word_token_rate
+        self.apply_chunking = apply_chunking
         self.extra_args = kwargs.get("extra_args", {})
         if not self.apply_chunking:
             self.chunk_token_threshold = 1e9
-
-        self.verbose = kwargs.get("verbose", False)
+        self.verbose = verbose
         self.usages = []  # Store individual usages
         self.total_usage = TokenUsage()  # Accumulated usage
 
-        if not self.api_token:
-            raise ValueError(
-                "API token must be provided for LLMExtractionStrategy. Update the config.py or set OPENAI_API_KEY environment variable."
-            )
+        self.provider = provider
+        self.api_token = api_token
+        self.base_url = base_url
+        self.api_base = api_base
 
+    
+    def __setattr__(self, name, value):
+        """Handle attribute setting."""
+        # TODO: Planning to set properties dynamically based on the __init__ signature
+        sig = inspect.signature(self.__init__)
+        all_params = sig.parameters  # Dictionary of parameter names and their details
+
+        if name in self._UNWANTED_PROPS and value is not all_params[name].default:
+            raise AttributeError(f"Setting '{name}' is deprecated. {self._UNWANTED_PROPS[name]}")
+        
+        super().__setattr__(name, value)  
+        
     def extract(self, url: str, ix: int, html: str) -> List[Dict[str, Any]]:
         """
         Extract meaningful blocks or chunks from the given HTML using an LLM.
@@ -590,7 +605,7 @@ class LLMExtractionStrategy(ExtractionStrategy):
             prompt_with_variables = PROMPT_EXTRACT_BLOCKS_WITH_INSTRUCTION
 
         if self.extract_type == "schema" and self.schema:
-            variable_values["SCHEMA"] = json.dumps(self.schema, indent=2)
+            variable_values["SCHEMA"] = json.dumps(self.schema, indent=2) # if type of self.schema is dict else self.schema
             prompt_with_variables = PROMPT_EXTRACT_SCHEMA_WITH_INSTRUCTION
 
         for variable in variable_values:
@@ -599,10 +614,10 @@ class LLMExtractionStrategy(ExtractionStrategy):
             )
 
         response = perform_completion_with_backoff(
-            self.provider,
+            self.llm_config.provider,
             prompt_with_variables,
-            self.api_token,
-            base_url=self.api_base or self.base_url,
+            self.llm_config.api_token,
+            base_url=self.llm_config.base_url,
             extra_args=self.extra_args,
         )  # , json_response=self.extract_type == "schema")
         # Track usage
@@ -652,53 +667,16 @@ class LLMExtractionStrategy(ExtractionStrategy):
             )
         return blocks
 
-    def _merge(self, documents, chunk_token_threshold, overlap):
+    def _merge(self, documents, chunk_token_threshold, overlap) -> List[str]:
         """
         Merge documents into sections based on chunk_token_threshold and overlap.
         """
-        # chunks = []
-        sections = []
-        total_tokens = 0
-
-        # Calculate the total tokens across all documents
-        for document in documents:
-            total_tokens += len(document.split(" ")) * self.word_token_rate
-
-        # Calculate the number of sections needed
-        num_sections = math.floor(total_tokens / chunk_token_threshold)
-        if num_sections < 1:
-            num_sections = 1  # Ensure there is at least one section
-        adjusted_chunk_threshold = total_tokens / num_sections
-
-        total_token_so_far = 0
-        current_chunk = []
-
-        for document in documents:
-            tokens = document.split(" ")
-            token_count = len(tokens) * self.word_token_rate
-
-            if total_token_so_far + token_count <= adjusted_chunk_threshold:
-                current_chunk.extend(tokens)
-                total_token_so_far += token_count
-            else:
-                # Ensure to handle the last section properly
-                if len(sections) == num_sections - 1:
-                    current_chunk.extend(tokens)
-                    continue
-
-                # Add overlap if specified
-                if overlap > 0 and current_chunk:
-                    overlap_tokens = current_chunk[-overlap:]
-                    current_chunk.extend(overlap_tokens)
-
-                sections.append(" ".join(current_chunk))
-                current_chunk = tokens
-                total_token_so_far = token_count
-
-        # Add the last chunk
-        if current_chunk:
-            sections.append(" ".join(current_chunk))
-
+        sections =  merge_chunks(
+            docs = documents,
+            target_size= chunk_token_threshold,
+            overlap=overlap,
+            word_token_ratio=self.word_token_rate
+        )
         return sections
 
     def run(self, url: str, sections: List[str]) -> List[Dict[str, Any]]:
@@ -719,7 +697,7 @@ class LLMExtractionStrategy(ExtractionStrategy):
             overlap=int(self.chunk_token_threshold * self.overlap_rate),
         )
         extracted_content = []
-        if self.provider.startswith("groq/"):
+        if self.llm_config.provider.startswith("groq/"):
             # Sequential processing with a delay
             for ix, section in enumerate(merged_sections):
                 extract_func = partial(self.extract, url)
@@ -1060,13 +1038,20 @@ class JsonElementExtractionStrategy(ExtractionStrategy):
         """Get attribute value from element"""
         pass
 
+    _GENERATE_SCHEMA_UNWANTED_PROPS = {
+        'provider': 'Instead, use llm_config=LLMConfig(provider="...")',
+        'api_token': 'Instead, use llm_config=LlMConfig(api_token="...")',
+    }
+
     @staticmethod
     def generate_schema(
         html: str,
         schema_type: str = "CSS", # or XPATH
         query: str = None,
-        provider: str = "gpt-4o",
-        api_token: str = os.getenv("OPENAI_API_KEY"),
+        target_json_example: str = None,
+        llm_config: 'LLMConfig' = None,
+        provider: str = None,
+        api_token: str = None,
         **kwargs
     ) -> dict:
         """
@@ -1075,16 +1060,20 @@ class JsonElementExtractionStrategy(ExtractionStrategy):
         Args:
             html (str): The HTML content to analyze
             query (str, optional): Natural language description of what data to extract
-            provider (str): LLM provider to use 
-            api_token (str): API token for LLM provider
+            provider (str): Legacy Parameter. LLM provider to use 
+            api_token (str): Legacy Parameter. API token for LLM provider
+            llm_config (LLMConfig): LLM configuration object
             prompt (str, optional): Custom prompt template to use
-            **kwargs: Additional args passed to perform_completion_with_backoff
+            **kwargs: Additional args passed to LLM processor
             
         Returns:
             dict: Generated schema following the JsonElementExtractionStrategy format
         """
         from .prompts import JSON_SCHEMA_BUILDER
         from .utils import perform_completion_with_backoff
+        for name, message in JsonElementExtractionStrategy._GENERATE_SCHEMA_UNWANTED_PROPS.items():
+            if locals()[name] is not None:
+                raise AttributeError(f"Setting '{name}' is deprecated. {message}")
         
         # Use default or custom prompt
         prompt_template = JSON_SCHEMA_BUILDER if schema_type == "CSS" else JSON_SCHEMA_BUILDER_XPATH
@@ -1092,32 +1081,57 @@ class JsonElementExtractionStrategy(ExtractionStrategy):
         # Build the prompt
         system_message = {
             "role": "system", 
-            "content": "You are a specialized HTML schema generator. Analyze the HTML and generate a JSON schema that follows the specified format. Only output valid JSON schema, nothing else."
+            "content": f"""You specialize in generating special JSON schemas for web scraping. This schema uses CSS or XPATH selectors to present a repetitive pattern in crawled HTML, such as a product in a product list or a search result item in a list of search results. You use this JSON schema to pass to a language model along with the HTML content to extract structured data from the HTML. The language model uses the JSON schema to extract data from the HTML and retrieve values for fields in the JSON schema, following the schema.
+
+Generating this HTML manually is not feasible, so you need to generate the JSON schema using the HTML content. The HTML copied from the crawled website is provided below, which we believe contains the repetitive pattern.
+
+# Schema main keys:
+- name: This is the name of the schema.
+- baseSelector: This is the CSS or XPATH selector that identifies the base element that contains all the repetitive patterns.
+- baseFields: This is a list of fields that you extract from the base element itself.
+- fields: This is a list of fields that you extract from the children of the base element. {{name, selector, type}} based on the type, you may have extra keys such as "attribute" when the type is "attribute".
+
+# Extra Context:
+In this context, the following items may or may not be present:
+- Example of target JSON object: This is a sample of the final JSON object that we hope to extract from the HTML using the schema you are generating.
+- Extra Instructions: This is optional instructions to consider when generating the schema provided by the user.
+
+# What if there is no example of target JSON object?
+In this scenario, use your best judgment to generate the schema. Try to maximize the number of fields that you can extract from the HTML.
+
+# What are the instructions and details for this schema generation?
+{prompt_template}"""
         }
         
         user_message = {
             "role": "user",
             "content": f"""
-                Instructions:
-                {prompt_template}
-
                 HTML to analyze:
                 ```html
                 {html}
                 ```
-
-                {"Extract the following data: " + query if query else "Please analyze the HTML structure and create the most appropriate schema for data extraction."}
                 """
         }
 
+        if query:
+            user_message["content"] += f"\n\nImportant Notes to Consider:\n{query}"
+        if target_json_example:
+            user_message["content"] += f"\n\nExample of target JSON object:\n{target_json_example}"
+        
+        user_message["content"] += """IMPORTANT: Ensure your schema is reliable, meaning do not use selectors that seem to generate dynamically and are not reliable. A reliable schema is what you want, as it consistently returns the same data even after many reloads of the page.
+
+        Analyze the HTML and generate a JSON schema that follows the specified format. Only output valid JSON schema, nothing else.
+        """
+
         try:
             # Call LLM with backoff handling
             response = perform_completion_with_backoff(
-                provider=provider,
+                provider=llm_config.provider,
                 prompt_with_variables="\n\n".join([system_message["content"], user_message["content"]]),
                 json_response = True,                
-                api_token=api_token,
-                **kwargs
+                api_token=llm_config.api_token,
+                base_url=llm_config.base_url,
+                extra_args=kwargs
             )
             
             # Extract and return schema
@@ -1154,7 +1168,8 @@ class JsonCssExtractionStrategy(JsonElementExtractionStrategy):
         super().__init__(schema, **kwargs)
 
     def _parse_html(self, html_content: str):
-        return BeautifulSoup(html_content, "html.parser")
+        # return BeautifulSoup(html_content, "html.parser")
+        return BeautifulSoup(html_content, "lxml")
 
     def _get_base_elements(self, parsed_html, selector: str):
         return parsed_html.select(selector)
@@ -1173,6 +1188,373 @@ class JsonCssExtractionStrategy(JsonElementExtractionStrategy):
     def _get_element_attribute(self, element, attribute: str):
         return element.get(attribute)
 
+class JsonLxmlExtractionStrategy(JsonElementExtractionStrategy):
+    def __init__(self, schema: Dict[str, Any], **kwargs):
+        kwargs["input_format"] = "html"
+        super().__init__(schema, **kwargs)
+        self._selector_cache = {}
+        self._xpath_cache = {}
+        self._result_cache = {}
+        
+        # Control selector optimization strategy
+        self.use_caching = kwargs.get("use_caching", True)
+        self.optimize_common_patterns = kwargs.get("optimize_common_patterns", True)
+        
+        # Load lxml dependencies once
+        from lxml import etree, html
+        from lxml.cssselect import CSSSelector
+        self.etree = etree
+        self.html_parser = html
+        self.CSSSelector = CSSSelector
+    
+    def _parse_html(self, html_content: str):
+        """Parse HTML content with error recovery"""
+        try:
+            parser = self.etree.HTMLParser(recover=True, remove_blank_text=True)
+            return self.etree.fromstring(html_content, parser)
+        except Exception as e:
+            if self.verbose:
+                print(f"Error parsing HTML, falling back to alternative method: {e}")
+            try:
+                return self.html_parser.fromstring(html_content)
+            except Exception as e2:
+                if self.verbose:
+                    print(f"Critical error parsing HTML: {e2}")
+                # Create minimal document as fallback
+                return self.etree.Element("html")
+    
+    def _optimize_selector(self, selector_str):
+        """Optimize common selector patterns for better performance"""
+        if not self.optimize_common_patterns:
+            return selector_str
+            
+        # Handle td:nth-child(N) pattern which is very common in table scraping
+        import re
+        if re.search(r'td:nth-child\(\d+\)', selector_str):
+            return selector_str  # Already handled specially in _apply_selector
+            
+        # Split complex selectors into parts for optimization
+        parts = selector_str.split()
+        if len(parts) <= 1:
+            return selector_str
+            
+        # For very long selectors, consider using just the last specific part
+        if len(parts) > 3 and any(p.startswith('.') or p.startswith('#') for p in parts):
+            specific_parts = [p for p in parts if p.startswith('.') or p.startswith('#')]
+            if specific_parts:
+                return specific_parts[-1]  # Use most specific class/id selector
+                
+        return selector_str
+    
+    def _create_selector_function(self, selector_str):
+        """Create a selector function that handles all edge cases"""
+        original_selector = selector_str
+        
+        # Try to optimize the selector if appropriate
+        if self.optimize_common_patterns:
+            selector_str = self._optimize_selector(selector_str)
+        
+        try:
+            # Attempt to compile the CSS selector
+            compiled = self.CSSSelector(selector_str)
+            xpath = compiled.path
+            
+            # Store XPath for later use
+            self._xpath_cache[selector_str] = xpath
+            
+            # Create the wrapper function that implements the selection strategy
+            def selector_func(element, context_sensitive=True):
+                cache_key = None
+                
+                # Use result caching if enabled
+                if self.use_caching:
+                    # Create a cache key based on element and selector
+                    element_id = element.get('id', '') or str(hash(element))
+                    cache_key = f"{element_id}::{selector_str}"
+                    
+                    if cache_key in self._result_cache:
+                        return self._result_cache[cache_key]
+                
+                results = []
+                try:
+                    # Strategy 1: Direct CSS selector application (fastest)
+                    results = compiled(element)
+                    
+                    # If that fails and we need context sensitivity
+                    if not results and context_sensitive:
+                        # Strategy 2: Try XPath with context adjustment
+                        context_xpath = self._make_context_sensitive_xpath(xpath, element)
+                        if context_xpath:
+                            results = element.xpath(context_xpath)
+                        
+                        # Strategy 3: Handle special case - nth-child
+                        if not results and 'nth-child' in original_selector:
+                            results = self._handle_nth_child_selector(element, original_selector)
+                        
+                        # Strategy 4: Direct descendant search for class/ID selectors
+                        if not results:
+                            results = self._fallback_class_id_search(element, original_selector)
+                            
+                        # Strategy 5: Last resort - tag name search for the final part
+                        if not results:
+                            parts = original_selector.split()
+                            if parts:
+                                last_part = parts[-1]
+                                # Extract tag name from the selector
+                                tag_match = re.match(r'^(\w+)', last_part)
+                                if tag_match:
+                                    tag_name = tag_match.group(1)
+                                    results = element.xpath(f".//{tag_name}")
+                    
+                    # Cache results if caching is enabled
+                    if self.use_caching and cache_key:
+                        self._result_cache[cache_key] = results
+                        
+                except Exception as e:
+                    if self.verbose:
+                        print(f"Error applying selector '{selector_str}': {e}")
+                
+                return results
+                
+            return selector_func
+            
+        except Exception as e:
+            if self.verbose:
+                print(f"Error compiling selector '{selector_str}': {e}")
+            
+            # Fallback function for invalid selectors
+            return lambda element, context_sensitive=True: []
+    
+    def _make_context_sensitive_xpath(self, xpath, element):
+        """Convert absolute XPath to context-sensitive XPath"""
+        try:
+            # If starts with descendant-or-self, it's already context-sensitive
+            if xpath.startswith('descendant-or-self::'):
+                return xpath
+                
+            # Remove leading slash if present
+            if xpath.startswith('/'):
+                context_xpath = f".{xpath}"
+            else:
+                context_xpath = f".//{xpath}"
+                
+            # Validate the XPath by trying it
+            try:
+                element.xpath(context_xpath)
+                return context_xpath
+            except:
+                # If that fails, try a simpler descendant search
+                return f".//{xpath.split('/')[-1]}"
+        except:
+            return None
+    
+    def _handle_nth_child_selector(self, element, selector_str):
+        """Special handling for nth-child selectors in tables"""
+        import re
+        results = []
+        
+        try:
+            # Extract the column number from td:nth-child(N)
+            match = re.search(r'td:nth-child\((\d+)\)', selector_str)
+            if match:
+                col_num = match.group(1)
+                
+                # Check if there's content after the nth-child part
+                remaining_selector = selector_str.split(f"td:nth-child({col_num})", 1)[-1].strip()
+                
+                if remaining_selector:
+                    # If there's a specific element we're looking for after the column
+                    # Extract any tag names from the remaining selector
+                    tag_match = re.search(r'(\w+)', remaining_selector)
+                    tag_name = tag_match.group(1) if tag_match else '*'
+                    results = element.xpath(f".//td[{col_num}]//{tag_name}")
+                else:
+                    # Just get the column cell
+                    results = element.xpath(f".//td[{col_num}]")
+        except Exception as e:
+            if self.verbose:
+                print(f"Error handling nth-child selector: {e}")
+                
+        return results
+    
+    def _fallback_class_id_search(self, element, selector_str):
+        """Fallback to search by class or ID"""
+        results = []
+        
+        try:
+            # Extract class selectors (.classname)
+            import re
+            class_matches = re.findall(r'\.([a-zA-Z0-9_-]+)', selector_str)
+            
+            # Extract ID selectors (#idname)
+            id_matches = re.findall(r'#([a-zA-Z0-9_-]+)', selector_str)
+            
+            # Try each class
+            for class_name in class_matches:
+                class_results = element.xpath(f".//*[contains(@class, '{class_name}')]")
+                results.extend(class_results)
+                
+            # Try each ID (usually more specific)
+            for id_name in id_matches:
+                id_results = element.xpath(f".//*[@id='{id_name}']")
+                results.extend(id_results)
+        except Exception as e:
+            if self.verbose:
+                print(f"Error in fallback class/id search: {e}")
+                
+        return results
+    
+    def _get_selector(self, selector_str):
+        """Get or create a selector function with caching"""
+        if selector_str not in self._selector_cache:
+            self._selector_cache[selector_str] = self._create_selector_function(selector_str)
+        return self._selector_cache[selector_str]
+    
+    def _get_base_elements(self, parsed_html, selector: str):
+        """Get all base elements using the selector"""
+        selector_func = self._get_selector(selector)
+        # For base elements, we don't need context sensitivity
+        return selector_func(parsed_html, context_sensitive=False)
+    
+    def _get_elements(self, element, selector: str):
+        """Get child elements using the selector with context sensitivity"""
+        selector_func = self._get_selector(selector)
+        return selector_func(element, context_sensitive=True)
+    
+    def _get_element_text(self, element) -> str:
+        """Extract normalized text from element"""
+        try:
+            # Get all text nodes and normalize
+            text = " ".join(t.strip() for t in element.xpath(".//text()") if t.strip())
+            return text
+        except Exception as e:
+            if self.verbose:
+                print(f"Error extracting text: {e}")
+            # Fallback
+            try:
+                return element.text_content().strip()
+            except:
+                return ""
+    
+    def _get_element_html(self, element) -> str:
+        """Get HTML string representation of element"""
+        try:
+            return self.etree.tostring(element, encoding='unicode', method='html')
+        except Exception as e:
+            if self.verbose:
+                print(f"Error serializing HTML: {e}")
+            return ""
+    
+    def _get_element_attribute(self, element, attribute: str):
+        """Get attribute value safely"""
+        try:
+            return element.get(attribute)
+        except Exception as e:
+            if self.verbose:
+                print(f"Error getting attribute '{attribute}': {e}")
+            return None
+            
+    def _clear_caches(self):
+        """Clear caches to free memory"""
+        if self.use_caching:
+            self._result_cache.clear()
+
+class JsonLxmlExtractionStrategy_naive(JsonElementExtractionStrategy):
+    def __init__(self, schema: Dict[str, Any], **kwargs):
+        kwargs["input_format"] = "html"  # Force HTML input
+        super().__init__(schema, **kwargs)
+        self._selector_cache = {}
+    
+    def _parse_html(self, html_content: str):
+        from lxml import etree
+        parser = etree.HTMLParser(recover=True)
+        return etree.fromstring(html_content, parser)
+    
+    def _get_selector(self, selector_str):
+        """Get a selector function that works within the context of an element"""
+        if selector_str not in self._selector_cache:
+            from lxml.cssselect import CSSSelector
+            try:
+                # Store both the compiled selector and its xpath translation
+                compiled = CSSSelector(selector_str)
+                
+                # Create a function that will apply this selector appropriately
+                def select_func(element):
+                    try:
+                        # First attempt: direct CSS selector application
+                        results = compiled(element)
+                        if results:
+                            return results
+                        
+                        # Second attempt: contextual XPath selection
+                        # Convert the root-based XPath to a context-based XPath
+                        xpath = compiled.path
+                        
+                        # If the XPath already starts with descendant-or-self, handle it specially
+                        if xpath.startswith('descendant-or-self::'):
+                            context_xpath = xpath
+                        else:
+                            # For normal XPath expressions, make them relative to current context
+                            context_xpath = f"./{xpath.lstrip('/')}"
+                        
+                        results = element.xpath(context_xpath)
+                        if results:
+                            return results
+                        
+                        # Final fallback: simple descendant search for common patterns
+                        if 'nth-child' in selector_str:
+                            # Handle td:nth-child(N) pattern
+                            import re
+                            match = re.search(r'td:nth-child\((\d+)\)', selector_str)
+                            if match:
+                                col_num = match.group(1)
+                                sub_selector = selector_str.split(')', 1)[-1].strip()
+                                if sub_selector:
+                                    return element.xpath(f".//td[{col_num}]//{sub_selector}")
+                                else:
+                                    return element.xpath(f".//td[{col_num}]")
+                        
+                        # Last resort: try each part of the selector separately
+                        parts = selector_str.split()
+                        if len(parts) > 1 and parts[-1]:
+                            return element.xpath(f".//{parts[-1]}")
+                            
+                        return []
+                    except Exception as e:
+                        if self.verbose:
+                            print(f"Error applying selector '{selector_str}': {e}")
+                        return []
+                
+                self._selector_cache[selector_str] = select_func
+            except Exception as e:
+                if self.verbose:
+                    print(f"Error compiling selector '{selector_str}': {e}")
+                
+                # Fallback function for invalid selectors
+                def fallback_func(element):
+                    return []
+                
+                self._selector_cache[selector_str] = fallback_func
+                
+        return self._selector_cache[selector_str]
+    
+    def _get_base_elements(self, parsed_html, selector: str):
+        selector_func = self._get_selector(selector)
+        return selector_func(parsed_html)
+    
+    def _get_elements(self, element, selector: str):
+        selector_func = self._get_selector(selector)
+        return selector_func(element)
+    
+    def _get_element_text(self, element) -> str:
+        return "".join(element.xpath(".//text()")).strip()
+    
+    def _get_element_html(self, element) -> str:
+        from lxml import etree
+        return etree.tostring(element, encoding='unicode')
+    
+    def _get_element_attribute(self, element, attribute: str):
+        return element.get(attribute)    
 
 class JsonXPathExtractionStrategy(JsonElementExtractionStrategy):
     """

crawl4ai/html2text/__init__.py

@@ -510,6 +510,7 @@ class HTML2Text(html.parser.HTMLParser):
 
         if tag == "a" and not self.ignore_links:
             if start:
+                self.inside_link = True
                 if (
                     "href" in attrs
                     and attrs["href"] is not None
@@ -526,6 +527,7 @@ class HTML2Text(html.parser.HTMLParser):
                 else:
                     self.astack.append(None)
             else:
+                self.inside_link = False
                 if self.astack:
                     a = self.astack.pop()
                     if self.maybe_automatic_link and not self.empty_link:
@@ -610,13 +612,22 @@ class HTML2Text(html.parser.HTMLParser):
                         self.o("[" + str(a_props.count) + "]")
 
         if tag == "dl" and start:
-            self.p()
-        if tag == "dt" and not start:
-            self.pbr()
-        if tag == "dd" and start:
-            self.o("    ")
-        if tag == "dd" and not start:
-            self.pbr()
+            self.p()  # Add paragraph break before list starts
+            self.p_p = 0  # Reset paragraph state
+        
+        elif tag == "dt" and start:
+            if self.p_p == 0:  # If not first term
+                self.o("\n\n")  # Add spacing before new term-definition pair
+            self.p_p = 0  # Reset paragraph state
+        
+        elif tag == "dt" and not start:
+            self.o("\n")  # Single newline between term and definition
+        
+        elif tag == "dd" and start:
+            self.o("    ")  # Indent definition
+        
+        elif tag == "dd" and not start:
+            self.p_p = 0
 
         if tag in ["ol", "ul"]:
             # Google Docs create sub lists as top level lists
@@ -1026,6 +1037,7 @@ class CustomHTML2Text(HTML2Text):
         super().__init__(*args, **kwargs)
         self.inside_pre = False
         self.inside_code = False
+        self.inside_link = False
         self.preserve_tags = set()  # Set of tags to preserve
         self.current_preserved_tag = None
         self.preserved_content = []
@@ -1105,11 +1117,17 @@ class CustomHTML2Text(HTML2Text):
                 # Ignore code tags inside pre blocks if handle_code_in_pre is False
                 return
             if start:
-                self.o("`")  # Markdown inline code start
+                if not self.inside_link:
+                    self.o("`")  # Only output backtick if not inside a link
                 self.inside_code = True
             else:
-                self.o("`")  # Markdown inline code end
+                if not self.inside_link:
+                    self.o("`")  # Only output backtick if not inside a link
                 self.inside_code = False
+
+            # If inside a link, let the parent class handle the content
+            if self.inside_link:
+                super().handle_tag(tag, attrs, start) 
         else:
             super().handle_tag(tag, attrs, start)
 

crawl4ai/hub.py

@@ -0,0 +1,69 @@
+# crawl4ai/hub.py
+from abc import ABC, abstractmethod
+from typing import Dict, Type, Union
+import logging
+import importlib
+from pathlib import Path
+import inspect
+
+logger = logging.getLogger(__name__)
+
+
+class BaseCrawler(ABC):
+    def __init__(self):
+        self.logger = logging.getLogger(self.__class__.__name__)
+        
+    @abstractmethod
+    async def run(self, url: str = "", **kwargs) -> str:
+        """
+        Implement this method to return JSON string.
+        Must accept URL + arbitrary kwargs for flexibility.
+        """
+        pass
+
+    def __init_subclass__(cls, **kwargs):
+        """Enforce interface validation on subclassing"""
+        super().__init_subclass__(**kwargs)
+        
+        # Verify run method signature
+        run_method = cls.run
+        if not run_method.__code__.co_argcount >= 2:  # self + url
+            raise TypeError(f"{cls.__name__} must implement 'run(self, url: str, **kwargs)'")
+            
+        # Verify async nature
+        if not inspect.iscoroutinefunction(run_method):
+            raise TypeError(f"{cls.__name__}.run must be async")
+
+class CrawlerHub:
+    _crawlers: Dict[str, Type[BaseCrawler]] = {}
+
+    @classmethod
+    def _discover_crawlers(cls):
+        """Dynamically load crawlers from /crawlers in 3 lines"""
+        base_path = Path(__file__).parent / "crawlers"
+        for crawler_dir in base_path.iterdir():
+            if crawler_dir.is_dir():
+                try:
+                    module = importlib.import_module(
+                        f"crawl4ai.crawlers.{crawler_dir.name}.crawler"
+                    )
+                    for attr in dir(module):
+                        cls._maybe_register_crawler(
+                            getattr(module, attr), crawler_dir.name
+                        )
+                except Exception as e:
+                    logger.warning(f"Failed {crawler_dir.name}: {str(e)}")
+
+    @classmethod
+    def _maybe_register_crawler(cls, obj, name: str):
+        """Brilliant one-liner registration"""
+        if isinstance(obj, type) and issubclass(obj, BaseCrawler) and obj != BaseCrawler:
+            module = importlib.import_module(obj.__module__)
+            obj.meta = getattr(module, "__meta__", {})
+            cls._crawlers[name] = obj
+
+    @classmethod
+    def get(cls, name: str) -> Union[Type[BaseCrawler], None]:
+        if not cls._crawlers:
+            cls._discover_crawlers()
+        return cls._crawlers.get(name)

crawl4ai/install.py

@@ -2,14 +2,47 @@ import subprocess
 import sys
 import asyncio
 from .async_logger import AsyncLogger, LogLevel
+from pathlib import Path
+import os
+import shutil
 
 # Initialize logger
 logger = AsyncLogger(log_level=LogLevel.DEBUG, verbose=True)
 
+def setup_home_directory():
+    """Set up the .crawl4ai folder structure in the user's home directory."""
+    base_dir = os.getenv("CRAWL4_AI_BASE_DIRECTORY")
+    crawl4ai_folder = Path(base_dir) if base_dir else Path.home()
+    crawl4ai_config = crawl4ai_folder / "global.yml"
+    crawl4ai_folder = crawl4ai_folder / ".crawl4ai"
+    cache_folder = crawl4ai_folder / "cache"
+    content_folders = [
+        "html_content",
+        "cleaned_html",
+        "markdown_content",
+        "extracted_content",
+        "screenshots",
+    ]
+
+    # Clean up old cache if exists
+    if cache_folder.exists():
+        shutil.rmtree(cache_folder)
+
+    # Create new folder structure
+    crawl4ai_folder.mkdir(exist_ok=True)
+    cache_folder.mkdir(exist_ok=True)
+    for folder in content_folders:
+        (crawl4ai_folder / folder).mkdir(exist_ok=True)
+    
+    # If config file does not exist, create it
+    if not crawl4ai_config.exists():
+        with open(crawl4ai_config, "w") as f:
+            f.write("")
 
 def post_install():
     """Run all post-installation tasks"""
     logger.info("Running post-installation setup...", tag="INIT")
+    setup_home_directory()
     install_playwright()
     run_migration()
     logger.success("Post-installation setup completed!", tag="COMPLETE")
@@ -106,4 +139,5 @@ def doctor():
     """Entry point for the doctor command"""
     import asyncio
 
-    return asyncio.run(run_doctor())
+    asyncio.run(run_doctor())
+    sys.exit(0)

crawl4ai/legacy/cli.py

@@ -0,0 +1,123 @@
+import click
+import sys
+import asyncio
+from typing import List
+from .docs_manager import DocsManager
+from .async_logger import AsyncLogger
+
+logger = AsyncLogger(verbose=True)
+docs_manager = DocsManager(logger)
+
+
+def print_table(headers: List[str], rows: List[List[str]], padding: int = 2):
+    """Print formatted table with headers and rows"""
+    widths = [max(len(str(cell)) for cell in col) for col in zip(headers, *rows)]
+    border = "+" + "+".join("-" * (w + 2 * padding) for w in widths) + "+"
+
+    def format_row(row):
+        return (
+            "|"
+            + "|".join(
+                f"{' ' * padding}{str(cell):<{w}}{' ' * padding}"
+                for cell, w in zip(row, widths)
+            )
+            + "|"
+        )
+
+    click.echo(border)
+    click.echo(format_row(headers))
+    click.echo(border)
+    for row in rows:
+        click.echo(format_row(row))
+    click.echo(border)
+
+
+@click.group()
+def cli():
+    """Crawl4AI Command Line Interface"""
+    pass
+
+
+@cli.group()
+def docs():
+    """Documentation operations"""
+    pass
+
+
+@docs.command()
+@click.argument("sections", nargs=-1)
+@click.option(
+    "--mode", type=click.Choice(["extended", "condensed"]), default="extended"
+)
+def combine(sections: tuple, mode: str):
+    """Combine documentation sections"""
+    try:
+        asyncio.run(docs_manager.ensure_docs_exist())
+        click.echo(docs_manager.generate(sections, mode))
+    except Exception as e:
+        logger.error(str(e), tag="ERROR")
+        sys.exit(1)
+
+
+@docs.command()
+@click.argument("query")
+@click.option("--top-k", "-k", default=5)
+@click.option("--build-index", is_flag=True, help="Build index if missing")
+def search(query: str, top_k: int, build_index: bool):
+    """Search documentation"""
+    try:
+        result = docs_manager.search(query, top_k)
+        if result == "No search index available. Call build_search_index() first.":
+            if build_index or click.confirm("No search index found. Build it now?"):
+                asyncio.run(docs_manager.llm_text.generate_index_files())
+                result = docs_manager.search(query, top_k)
+        click.echo(result)
+    except Exception as e:
+        click.echo(f"Error: {str(e)}", err=True)
+        sys.exit(1)
+
+
+@docs.command()
+def update():
+    """Update docs from GitHub"""
+    try:
+        asyncio.run(docs_manager.fetch_docs())
+        click.echo("Documentation updated successfully")
+    except Exception as e:
+        click.echo(f"Error: {str(e)}", err=True)
+        sys.exit(1)
+
+
+@docs.command()
+@click.option("--force-facts", is_flag=True, help="Force regenerate fact files")
+@click.option("--clear-cache", is_flag=True, help="Clear BM25 cache")
+def index(force_facts: bool, clear_cache: bool):
+    """Build or rebuild search indexes"""
+    try:
+        asyncio.run(docs_manager.ensure_docs_exist())
+        asyncio.run(
+            docs_manager.llm_text.generate_index_files(
+                force_generate_facts=force_facts, clear_bm25_cache=clear_cache
+            )
+        )
+        click.echo("Search indexes built successfully")
+    except Exception as e:
+        click.echo(f"Error: {str(e)}", err=True)
+        sys.exit(1)
+
+
+# Add docs list command
+@docs.command()
+def list():
+    """List available documentation sections"""
+    try:
+        sections = docs_manager.list()
+        print_table(["Sections"], [[section] for section in sections])
+
+    except Exception as e:
+        click.echo(f"Error: {str(e)}", err=True)
+        sys.exit(1)
+
+
+if __name__ == "__main__":
+    cli()

crawl4ai/markdown_generation_strategy.py

@@ -2,6 +2,7 @@ from abc import ABC, abstractmethod
 from typing import Optional, Dict, Any, Tuple
 from .models import MarkdownGenerationResult
 from .html2text import CustomHTML2Text
+# from .types import RelevantContentFilter
 from .content_filter_strategy import RelevantContentFilter
 import re
 from urllib.parse import urljoin
@@ -29,9 +30,11 @@ class MarkdownGenerationStrategy(ABC):
         self,
         content_filter: Optional[RelevantContentFilter] = None,
         options: Optional[Dict[str, Any]] = None,
+        verbose: bool = False,
     ):
         self.content_filter = content_filter
         self.options = options or {}
+        self.verbose = verbose
 
     @abstractmethod
     def generate_markdown(
@@ -176,7 +179,7 @@ class DefaultMarkdownGenerator(MarkdownGenerationStrategy):
                 "ignore_emphasis": False,
                 "ignore_links": False,
                 "ignore_images": False,
-                "protect_links": True,
+                "protect_links": False,
                 "single_line_break": True,
                 "mark_code": True,
                 "escape_snob": False,

crawl4ai/models.py

@@ -1,4 +1,5 @@
-from pydantic import BaseModel, HttpUrl
+from re import U
+from pydantic import BaseModel, HttpUrl, PrivateAttr
 from typing import List, Dict, Optional, Callable, Awaitable, Union, Any
 from enum import Enum
 from dataclasses import dataclass
@@ -24,8 +25,8 @@ class CrawlerTaskResult:
     result: "CrawlResult"
     memory_usage: float
     peak_memory: float
-    start_time: datetime
-    end_time: datetime
+    start_time: Union[datetime, float]
+    end_time: Union[datetime, float]
     error_message: str = ""
 
 
@@ -36,13 +37,33 @@ class CrawlStatus(Enum):
     FAILED = "FAILED"
 
 
+# @dataclass
+# class CrawlStats:
+#     task_id: str
+#     url: str
+#     status: CrawlStatus
+#     start_time: Optional[datetime] = None
+#     end_time: Optional[datetime] = None
+#     memory_usage: float = 0.0
+#     peak_memory: float = 0.0
+#     error_message: str = ""
+
+#     @property
+#     def duration(self) -> str:
+#         if not self.start_time:
+#             return "0:00"
+#         end = self.end_time or datetime.now()
+#         duration = end - self.start_time
+#         return str(timedelta(seconds=int(duration.total_seconds())))
+
+
 @dataclass
 class CrawlStats:
     task_id: str
     url: str
     status: CrawlStatus
-    start_time: Optional[datetime] = None
-    end_time: Optional[datetime] = None
+    start_time: Optional[Union[datetime, float]] = None
+    end_time: Optional[Union[datetime, float]] = None
     memory_usage: float = 0.0
     peak_memory: float = 0.0
     error_message: str = ""
@@ -51,11 +72,21 @@ class CrawlStats:
     def duration(self) -> str:
         if not self.start_time:
             return "0:00"
+            
+        # Convert start_time to datetime if it's a float
+        start = self.start_time
+        if isinstance(start, float):
+            start = datetime.fromtimestamp(start)
+            
+        # Get end time or use current time
         end = self.end_time or datetime.now()
-        duration = end - self.start_time
+        # Convert end_time to datetime if it's a float
+        if isinstance(end, float):
+            end = datetime.fromtimestamp(end)
+            
+        duration = end - start
         return str(timedelta(seconds=int(duration.total_seconds())))
 
-
 class DisplayMode(Enum):
     DETAILED = "DETAILED"
     AGGREGATED = "AGGREGATED"
@@ -85,16 +116,28 @@ class MarkdownGenerationResult(BaseModel):
     fit_markdown: Optional[str] = None
     fit_html: Optional[str] = None
 
+    def __str__(self):
+        return self.raw_markdown
+
+@dataclass
+class TraversalStats:
+    """Statistics for the traversal process"""
+
+    start_time: datetime = datetime.now()
+    urls_processed: int = 0
+    urls_failed: int = 0
+    urls_skipped: int = 0
+    total_depth_reached: int = 0
+    current_depth: int = 0
 
 class DispatchResult(BaseModel):
     task_id: str
     memory_usage: float
     peak_memory: float
-    start_time: datetime
-    end_time: datetime
+    start_time: Union[datetime, float]
+    end_time: Union[datetime, float]
     error_message: str = ""
 
-
 class CrawlResult(BaseModel):
     url: str
     html: str
@@ -103,12 +146,10 @@ class CrawlResult(BaseModel):
     media: Dict[str, List[Dict]] = {}
     links: Dict[str, List[Dict]] = {}
     downloaded_files: Optional[List[str]] = None
+    js_execution_result: Optional[Dict[str, Any]] = None
     screenshot: Optional[str] = None
     pdf: Optional[bytes] = None
-    markdown: Optional[Union[str, MarkdownGenerationResult]] = None
-    markdown_v2: Optional[MarkdownGenerationResult] = None
-    fit_markdown: Optional[str] = None
-    fit_html: Optional[str] = None
+    _markdown: Optional[MarkdownGenerationResult] = PrivateAttr(default=None)
     extracted_content: Optional[str] = None
     metadata: Optional[dict] = None
     error_message: Optional[str] = None
@@ -122,10 +163,127 @@ class CrawlResult(BaseModel):
     class Config:
         arbitrary_types_allowed = True
 
+# NOTE: The StringCompatibleMarkdown class, custom __init__ method, property getters/setters,
+# and model_dump override all exist to support a smooth transition from markdown as a string
+# to markdown as a MarkdownGenerationResult object, while maintaining backward compatibility.
+# 
+# This allows code that expects markdown to be a string to continue working, while also
+# providing access to the full MarkdownGenerationResult object's properties.
+# 
+# The markdown_v2 property is deprecated and raises an error directing users to use markdown.
+# 
+# When backward compatibility is no longer needed in future versions, this entire mechanism
+# can be simplified to a standard field with no custom accessors or serialization logic.
+    
+    def __init__(self, **data):
+        markdown_result = data.pop('markdown', None)
+        super().__init__(**data)
+        if markdown_result is not None:
+            self._markdown = (
+                MarkdownGenerationResult(**markdown_result)
+                if isinstance(markdown_result, dict)
+                else markdown_result
+            )
+    
+    @property
+    def markdown(self):
+        """
+        Property that returns a StringCompatibleMarkdown object that behaves like
+        a string but also provides access to MarkdownGenerationResult attributes.
+        
+        This approach allows backward compatibility with code that expects 'markdown'
+        to be a string, while providing access to the full MarkdownGenerationResult.
+        """
+        if self._markdown is None:
+            return None
+        return StringCompatibleMarkdown(self._markdown)
+    
+    @markdown.setter
+    def markdown(self, value):
+        """
+        Setter for the markdown property.
+        """
+        self._markdown = value
+    
+    @property
+    def markdown_v2(self):
+        """
+        Deprecated property that raises an AttributeError when accessed.
+
+        This property exists to inform users that 'markdown_v2' has been
+        deprecated and they should use 'markdown' instead.
+        """
+        raise AttributeError(
+            "The 'markdown_v2' attribute is deprecated and has been removed. "
+            """Please use 'markdown' instead, which now returns a MarkdownGenerationResult, with
+            following properties:
+            - raw_markdown: The raw markdown string
+            - markdown_with_citations: The markdown string with citations
+            - references_markdown: The markdown string with references
+            - fit_markdown: The markdown string with fit text
+            """
+        )
+    
+    @property
+    def fit_markdown(self):
+        """
+        Deprecated property that raises an AttributeError when accessed.
+        """
+        raise AttributeError(
+            "The 'fit_markdown' attribute is deprecated and has been removed. "
+            "Please use 'markdown.fit_markdown' instead."
+        )
+    
+    @property
+    def fit_html(self):
+        """
+        Deprecated property that raises an AttributeError when accessed.
+        """
+        raise AttributeError(
+            "The 'fit_html' attribute is deprecated and has been removed. "
+            "Please use 'markdown.fit_html' instead."
+        )
+
+    def model_dump(self, *args, **kwargs):
+        """
+        Override model_dump to include the _markdown private attribute in serialization.
+        
+        This override is necessary because:
+        1. PrivateAttr fields are excluded from serialization by default
+        2. We need to maintain backward compatibility by including the 'markdown' field
+           in the serialized output
+        3. We're transitioning from 'markdown_v2' to enhancing 'markdown' to hold
+           the same type of data
+        
+        Future developers: This method ensures that the markdown content is properly
+        serialized despite being stored in a private attribute. If the serialization
+        requirements change, this is where you would update the logic.
+        """
+        result = super().model_dump(*args, **kwargs)
+        if self._markdown is not None:
+            result["markdown"] = self._markdown.model_dump() 
+        return result
+
+class StringCompatibleMarkdown(str):
+    """A string subclass that also provides access to MarkdownGenerationResult attributes"""
+    def __new__(cls, markdown_result):
+        return super().__new__(cls, markdown_result.raw_markdown)
+    
+    def __init__(self, markdown_result):
+        self._markdown_result = markdown_result
+    
+    def __getattr__(self, name):
+        return getattr(self._markdown_result, name)
+
+# END of backward compatibility code for markdown/markdown_v2.
+# When removing this code in the future, make sure to:
+# 1. Replace the private attribute and property with a standard field
+# 2. Update any serialization logic that might depend on the current behavior
 
 class AsyncCrawlResponse(BaseModel):
     html: str
     response_headers: Dict[str, str]
+    js_execution_result: Optional[Dict[str, Any]] = None
     status_code: int
     screenshot: Optional[str] = None
     pdf_data: Optional[bytes] = None
@@ -143,6 +301,7 @@ class AsyncCrawlResponse(BaseModel):
 ###############################
 class MediaItem(BaseModel):
     src: Optional[str] = ""
+    data: Optional[str] = ""
     alt: Optional[str] = ""
     desc: Optional[str] = ""
     score: Optional[int] = 0
@@ -167,6 +326,7 @@ class Media(BaseModel):
     audios: List[
         MediaItem
     ] = []  # Using MediaItem model for now, can be extended with Audio model if needed
+    tables: List[Dict] = []  # Table data extracted from HTML tables
 
 
 class Links(BaseModel):

crawl4ai/processors/pdf/__init__.py

@@ -0,0 +1,165 @@
+from pathlib import Path
+import asyncio
+from dataclasses import asdict
+from crawl4ai.async_logger import AsyncLogger
+from crawl4ai.async_crawler_strategy import AsyncCrawlerStrategy
+from crawl4ai.models import AsyncCrawlResponse, ScrapingResult 
+from crawl4ai.content_scraping_strategy import ContentScrapingStrategy
+from .processor import NaivePDFProcessorStrategy  # Assuming your current PDF code is in pdf_processor.py
+
+class PDFCrawlerStrategy(AsyncCrawlerStrategy):
+    def __init__(self, logger: AsyncLogger = None):
+        self.logger = logger
+        
+    async def crawl(self, url: str, **kwargs) -> AsyncCrawlResponse:
+        # Just pass through with empty HTML - scraper will handle actual processing
+        return AsyncCrawlResponse(
+            html="",  # Scraper will handle the real work
+            response_headers={"Content-Type": "application/pdf"},
+            status_code=200
+        )
+    
+    async def close(self):
+        pass        
+        
+    async def __aenter__(self):        
+        return self
+    
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        await self.close()
+
+class PDFContentScrapingStrategy(ContentScrapingStrategy):
+    """
+    A content scraping strategy for PDF files.
+    
+    Attributes:
+        save_images_locally (bool): Whether to save images locally.
+        extract_images (bool): Whether to extract images from PDF.
+        image_save_dir (str): Directory to save extracted images.
+        logger (AsyncLogger): Logger instance for recording events and errors.
+        
+    Methods:
+        scrap(url: str, html: str, **params) -> ScrapingResult:
+            Scrap content from a PDF file.
+        ascrap(url: str, html: str, **kwargs) -> ScrapingResult:
+            Asynchronous version of scrap.
+            
+    Usage:
+        strategy = PDFContentScrapingStrategy(
+            save_images_locally=False,
+            extract_images=False,
+            image_save_dir=None,
+            logger=logger
+        )
+        
+    """
+    def __init__(self, 
+                 save_images_locally : bool = False,
+                 extract_images : bool = False,
+                 image_save_dir : str = None,
+                 batch_size: int = 4,
+                 logger: AsyncLogger = None):
+        self.logger = logger
+        self.pdf_processor = NaivePDFProcessorStrategy(
+            save_images_locally=save_images_locally,
+            extract_images=extract_images,
+            image_save_dir=image_save_dir,
+            batch_size=batch_size
+        )
+
+    def scrap(self, url: str, html: str, **params) -> ScrapingResult:
+        """
+        Scrap content from a PDF file.
+        
+        Args:
+            url (str): The URL of the PDF file.
+            html (str): The HTML content of the page.
+            **params: Additional parameters.
+        
+        Returns:
+            ScrapingResult: The scraped content.
+        """
+        # Download if URL or use local path
+        pdf_path = self._get_pdf_path(url)
+        try:
+            # Process PDF
+            # result = self.pdf_processor.process(Path(pdf_path))
+            result = self.pdf_processor.process_batch(Path(pdf_path))
+            
+            # Combine page HTML
+            cleaned_html = f"""
+        <html>
+            <head><meta name="pdf-pages" content="{len(result.pages)}"></head>
+            <body>
+                {''.join(f'<div class="pdf-page" data-page="{i+1}">{page.html}</div>'
+                         for i, page in enumerate(result.pages))}
+            </body>
+        </html>
+        """
+            
+            # Accumulate media and links with page numbers
+            media = {"images": []}
+            links = {"urls": []}
+            
+            for page in result.pages:
+                # Add page number to each image
+                for img in page.images:
+                    img["page"] = page.page_number
+                    media["images"].append(img)
+                
+                # Add page number to each link
+                for link in page.links:
+                    links["urls"].append({
+                        "url": link,
+                        "page": page.page_number
+                    })
+
+            return ScrapingResult(
+                cleaned_html=cleaned_html,
+                success=True,
+                media=media,
+                links=links,
+                metadata=asdict(result.metadata)
+            )
+        finally:
+            # Cleanup temp file if downloaded
+            if url.startswith(("http://", "https://")):
+                Path(pdf_path).unlink(missing_ok=True)
+
+    async def ascrap(self, url: str, html: str, **kwargs) -> ScrapingResult:
+        # For simple cases, you can use the sync version
+        return await asyncio.to_thread(self.scrap, url, html, **kwargs)
+        
+
+    def _get_pdf_path(self, url: str) -> str:
+        if url.startswith(("http://", "https://")):
+            import tempfile
+            import requests
+            
+            # Create temp file with .pdf extension
+            temp_file = tempfile.NamedTemporaryFile(suffix='.pdf', delete=False)
+            
+            try:
+                # Download PDF with streaming
+                response = requests.get(url, stream=True)
+                response.raise_for_status()
+                
+                # Write to temp file
+                with open(temp_file.name, 'wb') as f:
+                    for chunk in response.iter_content(chunk_size=8192):
+                        f.write(chunk)
+                        
+                return temp_file.name
+                
+            except Exception as e:
+                # Clean up temp file if download fails
+                Path(temp_file.name).unlink(missing_ok=True)
+                raise RuntimeError(f"Failed to download PDF from {url}: {str(e)}")
+                
+        elif url.startswith("file://"):
+            return url[7:]  # Strip file:// prefix
+            
+        return url  # Assume local path
+    
+
+__all__ = ["PDFCrawlerStrategy", "PDFContentScrapingStrategy"]

crawl4ai/processors/pdf/processor.py

@@ -0,0 +1,487 @@
+import logging
+import re
+from abc import ABC, abstractmethod
+from datetime import datetime
+from pathlib import Path
+from time import time
+from dataclasses import dataclass, asdict, field
+from typing import Dict, List, Optional, Any, Union
+import base64
+import tempfile
+from .utils import *
+from .utils import (
+    apply_png_predictor,
+    clean_pdf_text,
+    clean_pdf_text_to_html,
+)
+
+# Remove direct PyPDF2 imports from the top
+# import PyPDF2
+# from PyPDF2 import PdfReader
+
+logger = logging.getLogger(__name__)
+
+@dataclass
+class PDFMetadata:
+    title: Optional[str] = None
+    author: Optional[str] = None
+    producer: Optional[str] = None
+    created: Optional[datetime] = None
+    modified: Optional[datetime] = None
+    pages: int = 0
+    encrypted: bool = False
+    file_size: Optional[int] = None
+
+@dataclass
+class PDFPage:
+    page_number: int
+    raw_text: str = ""
+    markdown: str = ""
+    html: str = ""
+    images: List[Dict] = field(default_factory=list)
+    links: List[str] = field(default_factory=list)
+    layout: List[Dict] = field(default_factory=list)
+
+@dataclass
+class PDFProcessResult:
+    metadata: PDFMetadata
+    pages: List[PDFPage]
+    processing_time: float = 0.0
+    version: str = "1.0"
+
+class PDFProcessorStrategy(ABC):
+    @abstractmethod
+    def process(self, pdf_path: Path) -> PDFProcessResult:
+        pass
+
+class NaivePDFProcessorStrategy(PDFProcessorStrategy):
+    def __init__(self, image_dpi: int = 144, image_quality: int = 85, extract_images: bool = True, 
+                 save_images_locally: bool = False, image_save_dir: Optional[Path] = None, batch_size: int = 4):
+        # Import check at initialization time
+        try:
+            import PyPDF2
+        except ImportError:
+            raise ImportError("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+            
+        self.image_dpi = image_dpi
+        self.image_quality = image_quality
+        self.current_page_number = 0
+        self.extract_images = extract_images
+        self.save_images_locally = save_images_locally
+        self.image_save_dir = image_save_dir
+        self.batch_size = batch_size
+        self._temp_dir = None
+
+    def process(self, pdf_path: Path) -> PDFProcessResult:
+        # Import inside method to allow dependency to be optional
+        try:
+            from PyPDF2 import PdfReader
+        except ImportError:
+            raise ImportError("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+            
+        start_time = time()
+        result = PDFProcessResult(
+            metadata=PDFMetadata(),
+            pages=[],
+            version="1.1"
+        )
+
+        try:
+            with pdf_path.open('rb') as file:
+                reader = PdfReader(file)
+                result.metadata = self._extract_metadata(pdf_path, reader)
+                
+                # Handle image directory
+                image_dir = None
+                if self.extract_images and self.save_images_locally:
+                    if self.image_save_dir:
+                        image_dir = Path(self.image_save_dir)
+                        image_dir.mkdir(exist_ok=True, parents=True)
+                    else:
+                        self._temp_dir = tempfile.mkdtemp(prefix='pdf_images_')
+                        image_dir = Path(self._temp_dir)
+
+                for page_num, page in enumerate(reader.pages):
+                    self.current_page_number = page_num + 1
+                    pdf_page = self._process_page(page, image_dir)
+                    result.pages.append(pdf_page)
+
+        except Exception as e:
+            logger.error(f"Failed to process PDF: {str(e)}")
+            raise
+        finally:
+            # Cleanup temp directory if it was created
+            if self._temp_dir and not self.image_save_dir:
+                import shutil
+                try:
+                    shutil.rmtree(self._temp_dir)
+                except Exception as e:
+                    logger.error(f"Failed to cleanup temp directory: {str(e)}")
+
+        result.processing_time = time() - start_time
+        return result
+
+    def process_batch(self, pdf_path: Path) -> PDFProcessResult:
+        """Like process() but processes PDF pages in parallel batches"""
+        # Import inside method to allow dependency to be optional
+        try:
+            from PyPDF2 import PdfReader
+            import PyPDF2  # For type checking
+        except ImportError:
+            raise ImportError("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+            
+        import concurrent.futures
+        import threading
+        
+        # Initialize PyPDF2 thread support
+        if not hasattr(threading.current_thread(), "_children"): 
+            threading.current_thread()._children = set()
+        
+        start_time = time()
+        result = PDFProcessResult(
+            metadata=PDFMetadata(),
+            pages=[],
+            version="1.1" 
+        )
+
+        try:
+            # Get metadata and page count from main thread
+            with pdf_path.open('rb') as file:
+                reader = PdfReader(file)
+                result.metadata = self._extract_metadata(pdf_path, reader)
+                total_pages = len(reader.pages)
+
+            # Handle image directory setup
+            image_dir = None
+            if self.extract_images and self.save_images_locally:
+                if self.image_save_dir:
+                    image_dir = Path(self.image_save_dir)
+                    image_dir.mkdir(exist_ok=True, parents=True)
+                else:
+                    self._temp_dir = tempfile.mkdtemp(prefix='pdf_images_')
+                    image_dir = Path(self._temp_dir)
+
+            def process_page_safely(page_num: int):
+                # Each thread opens its own file handle
+                with pdf_path.open('rb') as file:
+                    thread_reader = PdfReader(file)
+                    page = thread_reader.pages[page_num]
+                    self.current_page_number = page_num + 1
+                    return self._process_page(page, image_dir)
+
+            # Process pages in parallel batches
+            with concurrent.futures.ThreadPoolExecutor(max_workers=self.batch_size) as executor:
+                futures = []
+                for page_num in range(total_pages):
+                    future = executor.submit(process_page_safely, page_num)
+                    futures.append((page_num + 1, future))
+
+                # Collect results in order
+                result.pages = [None] * total_pages
+                for page_num, future in futures:
+                    try:
+                        pdf_page = future.result()
+                        result.pages[page_num - 1] = pdf_page
+                    except Exception as e:
+                        logger.error(f"Failed to process page {page_num}: {str(e)}")
+                        raise
+
+        except Exception as e:
+            logger.error(f"Failed to process PDF: {str(e)}")
+            raise
+        finally:
+            # Cleanup temp directory if it was created
+            if self._temp_dir and not self.image_save_dir:
+                import shutil
+                try:
+                    shutil.rmtree(self._temp_dir)
+                except Exception as e:
+                    logger.error(f"Failed to cleanup temp directory: {str(e)}")
+
+        result.processing_time = time() - start_time
+        return result
+
+    def _process_page(self, page, image_dir: Optional[Path]) -> PDFPage:
+        pdf_page = PDFPage(
+            page_number=self.current_page_number,
+        )
+
+        # Text and font extraction
+        def visitor_text(text, cm, tm, font_dict, font_size):
+            pdf_page.raw_text += text
+            pdf_page.layout.append({
+                "type": "text",
+                "text": text,
+                "x": tm[4],
+                "y": tm[5],
+            })
+        
+        page.extract_text(visitor_text=visitor_text)
+
+        # Image extraction
+        if self.extract_images:
+            pdf_page.images = self._extract_images(page, image_dir)
+
+        # Link extraction
+        pdf_page.links = self._extract_links(page)
+        
+        # Add markdown content
+        pdf_page.markdown = clean_pdf_text(self.current_page_number, pdf_page.raw_text)
+        pdf_page.html = clean_pdf_text_to_html(self.current_page_number, pdf_page.raw_text)
+
+        return pdf_page
+
+    def _extract_images(self, page, image_dir: Optional[Path]) -> List[Dict]:
+        # Import PyPDF2 for type checking only when needed
+        try:
+            import PyPDF2
+        except ImportError:
+            raise ImportError("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+            
+        if not self.extract_images:
+            return []
+
+        images = []
+        try:
+            resources = page.get("/Resources")
+            if resources:  # Check if resources exist
+                resources = resources.get_object()  # Resolve IndirectObject
+                if '/XObject' in resources:
+                    xobjects = resources['/XObject'].get_object()
+                    img_count = 0
+                    for obj_name in xobjects:
+                        xobj = xobjects[obj_name]
+                        if hasattr(xobj, 'get_object') and callable(xobj.get_object):
+                            xobj = xobj.get_object()
+                            if xobj.get('/Subtype') == '/Image':
+                                try:
+                                    img_count += 1
+                                    img_filename = f"page_{self.current_page_number}_img_{img_count}"
+                                    data = xobj.get_data()
+                                    filters = xobj.get('/Filter', [])
+                                    if not isinstance(filters, list):
+                                        filters = [filters]
+
+                                    # Resolve IndirectObjects in properties
+                                    width = xobj.get('/Width', 0)
+                                    height = xobj.get('/Height', 0)
+                                    color_space = xobj.get('/ColorSpace', '/DeviceRGB')
+                                    if isinstance(color_space, PyPDF2.generic.IndirectObject):
+                                        color_space = color_space.get_object()
+
+                                    # Handle different image encodings
+                                    success = False
+                                    image_format = 'bin'
+                                    image_data = None
+                                    
+                                    if '/FlateDecode' in filters:
+                                        try:
+                                            decode_parms = xobj.get('/DecodeParms', {})
+                                            if isinstance(decode_parms, PyPDF2.generic.IndirectObject):
+                                                decode_parms = decode_parms.get_object()
+                                            
+                                            predictor = decode_parms.get('/Predictor', 1)
+                                            bits = xobj.get('/BitsPerComponent', 8)
+                                            colors = 3 if color_space == '/DeviceRGB' else 1
+
+                                            if predictor >= 10:
+                                                data = apply_png_predictor(data, width, bits, colors)
+
+                                            # Create PIL Image
+                                            from PIL import Image
+                                            mode = 'RGB' if color_space == '/DeviceRGB' else 'L'
+                                            img = Image.frombytes(mode, (width, height), data)
+                                            
+                                            if self.save_images_locally:
+                                                final_path = (image_dir / img_filename).with_suffix('.png')
+                                                img.save(final_path)
+                                                image_data = str(final_path)
+                                            else:
+                                                import io
+                                                img_byte_arr = io.BytesIO()
+                                                img.save(img_byte_arr, format='PNG')
+                                                image_data = base64.b64encode(img_byte_arr.getvalue()).decode('utf-8')
+                                            
+                                            success = True
+                                            image_format = 'png'
+                                        except Exception as e:
+                                            logger.error(f"FlateDecode error: {str(e)}")
+
+                                    elif '/DCTDecode' in filters:
+                                        # JPEG image
+                                        try:
+                                            if self.save_images_locally:
+                                                final_path = (image_dir / img_filename).with_suffix('.jpg')
+                                                with open(final_path, 'wb') as f:
+                                                    f.write(data)
+                                                image_data = str(final_path)
+                                            else:
+                                                image_data = base64.b64encode(data).decode('utf-8')
+                                            success = True
+                                            image_format = 'jpeg'
+                                        except Exception as e:
+                                            logger.error(f"JPEG save error: {str(e)}")
+
+                                    elif '/CCITTFaxDecode' in filters:
+                                        try:
+                                            if data[:4] != b'II*\x00':
+                                                # Add TIFF header if missing
+                                                tiff_header = b'II*\x00\x08\x00\x00\x00\x0e\x00\x00\x01\x03\x00\x01\x00\x00\x00' + \
+                                                            width.to_bytes(4, 'little') + \
+                                                            b'\x01\x03\x00\x01\x00\x00\x00' + \
+                                                            height.to_bytes(4, 'little') + \
+                                                            b'\x01\x12\x00\x03\x00\x00\x00\x01\x00\x01\x00\x00\x01\x17\x00\x04\x00\x00\x00\x01\x00\x00\x00J\x01\x1B\x00\x05\x00\x00\x00\x01\x00\x00\x00R\x01\x28\x00\x03\x00\x00\x00\x01\x00\x02\x00\x00'
+                                                data = tiff_header + data
+                                            
+                                            if self.save_images_locally:
+                                                final_path = (image_dir / img_filename).with_suffix('.tiff')
+                                                with open(final_path, 'wb') as f:
+                                                    f.write(data)
+                                                image_data = str(final_path)
+                                            else:
+                                                image_data = base64.b64encode(data).decode('utf-8')
+                                            success = True
+                                            image_format = 'tiff'
+                                        except Exception as e:
+                                            logger.error(f"CCITT save error: {str(e)}")
+
+                                    elif '/JPXDecode' in filters:
+                                        # JPEG 2000
+                                        try:
+                                            if self.save_images_locally:
+                                                final_path = (image_dir / img_filename).with_suffix('.jp2')
+                                                with open(final_path, 'wb') as f:
+                                                    f.write(data)
+                                                image_data = str(final_path)
+                                            else:
+                                                image_data = base64.b64encode(data).decode('utf-8')
+                                            success = True
+                                            image_format = 'jpeg2000'
+                                        except Exception as e:
+                                            logger.error(f"JPEG2000 save error: {str(e)}")
+
+                                    if success and image_data:
+                                        image_info = {
+                                            "format": image_format,
+                                            "width": width,
+                                            "height": height,
+                                            "color_space": str(color_space),
+                                            "bits_per_component": xobj.get('/BitsPerComponent', 1)
+                                        }
+                                        
+                                        if self.save_images_locally:
+                                            image_info["path"] = image_data
+                                        else:
+                                            image_info["data"] = image_data
+                                            
+                                        images.append(image_info)
+                                    else:
+                                        # Fallback: Save raw data
+                                        if self.save_images_locally:
+                                            final_path = (image_dir / img_filename).with_suffix('.bin')
+                                            with open(final_path, 'wb') as f:
+                                                f.write(data)
+                                            logger.warning(f"Saved raw image data to {final_path}")
+                                        else:
+                                            image_data = base64.b64encode(data).decode('utf-8')
+                                            images.append({
+                                                "format": "bin",
+                                                "width": width,
+                                                "height": height,
+                                                "color_space": str(color_space),
+                                                "bits_per_component": xobj.get('/BitsPerComponent', 1),
+                                                "data": image_data
+                                            })
+
+                                except Exception as e:
+                                    logger.error(f"Error processing image: {str(e)}")
+        except Exception as e:
+            logger.error(f"Image extraction error: {str(e)}")
+        
+        return images
+
+    def _extract_links(self, page) -> List[str]:
+        links = []
+        if '/Annots' in page:
+            try:
+                for annot in page['/Annots']:
+                    a = annot.get_object()
+                    if '/A' in a and '/URI' in a['/A']:
+                        links.append(a['/A']['/URI'])
+            except Exception as e:
+                print(f"Link error: {str(e)}")
+        return links
+
+    def _extract_metadata(self, pdf_path: Path, reader = None) -> PDFMetadata:
+        # Import inside method to allow dependency to be optional 
+        if reader is None:
+            try:
+                from PyPDF2 import PdfReader
+                reader = PdfReader(pdf_path)
+            except ImportError:
+                raise ImportError("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+
+        meta = reader.metadata or {}
+        created = self._parse_pdf_date(meta.get('/CreationDate', ''))
+        modified = self._parse_pdf_date(meta.get('/ModDate', ''))
+        
+        return PDFMetadata(
+            title=meta.get('/Title'),
+            author=meta.get('/Author'),
+            producer=meta.get('/Producer'),
+            created=created,
+            modified=modified,
+            pages=len(reader.pages),
+            encrypted=reader.is_encrypted,
+            file_size=pdf_path.stat().st_size
+        )
+
+    def _parse_pdf_date(self, date_str: str) -> Optional[datetime]:
+        try:
+            match = re.match(r'D:(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})', date_str)
+            if not match:
+                return None
+                
+            return datetime(
+                year=int(match[1]),
+                month=int(match[2]),
+                day=int(match[3]),
+                hour=int(match[4]),
+                minute=int(match[5]),
+                second=int(match[6])
+            )
+        except:
+            return None
+
+# Usage example
+if __name__ == "__main__":
+    import json
+    from pathlib import Path
+    
+    try:
+        # Import PyPDF2 only when running the file directly
+        import PyPDF2
+        from PyPDF2 import PdfReader
+    except ImportError:
+        print("PyPDF2 is required for PDF processing. Install with 'pip install crawl4ai[pdf]'")
+        exit(1)
+        
+    current_dir = Path(__file__).resolve().parent
+    pdf_path = f'{current_dir}/test.pdf'
+    
+    strategy = NaivePDFProcessorStrategy()
+    result = strategy.process(Path(pdf_path))
+    
+    # Convert to JSON
+    json_output = asdict(result)
+    print(json.dumps(json_output, indent=2, default=str))
+    
+    with open(f'{current_dir}/test.html', 'w') as f:
+        for page in result.pages:
+            f.write(f'<h1>Page {page["page_number"]}</h1>')
+            f.write(page['html'])
+    with open(f'{current_dir}/test.md', 'w') as f:
+        for page in result.pages:
+            f.write(f'# Page {page["page_number"]}\n\n')
+            f.write(clean_pdf_text(page["page_number"], page['raw_text']))
+            f.write('\n\n')

crawl4ai/processors/pdf/utils.py

@@ -0,0 +1,350 @@
+import re
+
+def apply_png_predictor(data, width, bits, color_channels):
+    """Decode PNG predictor (PDF 1.5+ filter)"""
+    bytes_per_pixel = (bits * color_channels) // 8
+    if (bits * color_channels) % 8 != 0:
+        bytes_per_pixel += 1
+        
+    stride = width * bytes_per_pixel
+    scanline_length = stride + 1  # +1 for filter byte
+    
+    if len(data) % scanline_length != 0:
+        raise ValueError("Invalid scanline structure")
+    
+    num_lines = len(data) // scanline_length
+    output = bytearray()
+    prev_line = b'\x00' * stride
+    
+    for i in range(num_lines):
+        line = data[i*scanline_length:(i+1)*scanline_length]
+        filter_type = line[0]
+        filtered = line[1:]
+        
+        if filter_type == 0:  # None
+            decoded = filtered
+        elif filter_type == 1:  # Sub
+            decoded = bytearray(filtered)
+            for j in range(bytes_per_pixel, len(decoded)):
+                decoded[j] = (decoded[j] + decoded[j - bytes_per_pixel]) % 256
+        elif filter_type == 2:  # Up
+            decoded = bytearray([(filtered[j] + prev_line[j]) % 256 
+                               for j in range(len(filtered))])
+        elif filter_type == 3:  # Average
+            decoded = bytearray(filtered)
+            for j in range(len(decoded)):
+                left = decoded[j - bytes_per_pixel] if j >= bytes_per_pixel else 0
+                up = prev_line[j]
+                avg = (left + up) // 2
+                decoded[j] = (decoded[j] + avg) % 256
+        elif filter_type == 4:  # Paeth
+            decoded = bytearray(filtered)
+            for j in range(len(decoded)):
+                left = decoded[j - bytes_per_pixel] if j >= bytes_per_pixel else 0
+                up = prev_line[j]
+                up_left = prev_line[j - bytes_per_pixel] if j >= bytes_per_pixel else 0
+                paeth = paeth_predictor(left, up, up_left)
+                decoded[j] = (decoded[j] + paeth) % 256
+        else:
+            raise ValueError(f"Unsupported filter type: {filter_type}")
+        
+        output.extend(decoded)
+        prev_line = decoded
+    
+    return bytes(output)
+
+def paeth_predictor(a, b, c):
+    p = a + b - c
+    pa = abs(p - a)
+    pb = abs(p - b)
+    pc = abs(p - c)
+    if pa <= pb and pa <= pc:
+        return a
+    elif pb <= pc:
+        return b
+    else:
+        return c
+
+import re
+import html
+
+def clean_pdf_text_to_html(page_number, text):
+    # Decode Unicode escapes and handle surrogate pairs
+    try:
+        decoded = text.encode('latin-1').decode('unicode-escape')
+        decoded = decoded.encode('utf-16', 'surrogatepass').decode('utf-16')
+    except Exception as e:
+        decoded = text  # Fallback if decoding fails
+    
+    article_title_detected = False
+    # decoded = re.sub(r'\.\n', '.\n\n', decoded)
+    # decoded = re.sub(r'\.\n', '<|break|>', decoded)
+    lines = decoded.split('\n')
+    output = []
+    current_paragraph = []
+    in_header = False
+    email_pattern = re.compile(r'\{.*?\}')
+    affiliation_pattern = re.compile(r'^†')
+    quote_pattern = re.compile(r'^["“]')
+    author_pattern = re.compile(
+        r'^\s*[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?'
+        r'(?:,\s*[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?)*'
+        r'(?:,\s*(?:and|&)\s+[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?)?\s*$'
+    )
+    
+    def flush_paragraph():
+        if current_paragraph:
+            para = ' '.join(current_paragraph)
+            para = re.sub(r'\s+', ' ', para).strip()
+            if para:
+                # escaped_para = html.escape(para)
+                escaped_para = para
+                # escaped_para = re.sub(r'\.\n', '.\n\n', escaped_para)
+                # Split escaped_para by <|break|> to avoid HTML escaping
+                escaped_para = escaped_para.split('.\n\n')
+                # Wrap each part in <p> tag
+                escaped_para = [f'<p>{part}</p>' for part in escaped_para]
+                output.append(f'<div class="paragraph">{"".join(escaped_para)}</div><hr/>')
+            current_paragraph.clear()
+    
+    for i, line in enumerate(lines):
+        line = line.strip()
+        
+        # Handle empty lines
+        if not line:
+            flush_paragraph()
+            continue
+            
+        # Detect article title (first line with reasonable length)
+        if not article_title_detected and i == 0 and 3 <= len(line.split()) <= 8 and len(lines) > 1:
+            flush_paragraph()
+            escaped_line = html.escape(line)
+            output.append(f'<h2>{escaped_line}</h2>')
+            article_title_detected = True
+            continue
+            
+        # Detect numbered headers like "2.1 Background"
+        numbered_header = re.match(r'^(\d+(?:\.\d+)*)\s+(.+)$', line)
+        if i > 0 and not lines[i-1].strip() and numbered_header:
+            flush_paragraph()
+            level = numbered_header.group(1).count('.') + 1
+            header_text = numbered_header.group(2)
+            md_level = min(level + 1, 6)
+            escaped_header = html.escape(header_text)
+            output.append(f'<h{md_level}>{escaped_header}</h{md_level}>')
+            in_header = True
+            continue
+            
+        # Detect authors
+        if page_number == 1 and author_pattern.match(line):
+            authors = re.sub(r'[†â€]', '', line)
+            authors = re.split(r', | and ', authors)
+            formatted_authors = []
+            for author in authors:
+                if author.strip():
+                    parts = [p for p in author.strip().split() if p]
+                    formatted = ' '.join(parts)
+                    escaped_author = html.escape(formatted)
+                    formatted_authors.append(f'<strong>{escaped_author}</strong>')
+            
+            if len(formatted_authors) > 1:
+                joined = ', '.join(formatted_authors[:-1]) + ' and ' + formatted_authors[-1]
+            else:
+                joined = formatted_authors[0]
+            
+            output.append(f'<p>{joined}</p>')
+            continue
+            
+        # Detect affiliation
+        if affiliation_pattern.match(line):
+            escaped_line = html.escape(line)
+            output.append(f'<p><em>{escaped_line}</em></p>')
+            continue
+            
+        # Detect emails
+        if email_pattern.match(line):
+            escaped_line = html.escape(line)
+            output.append(f'<p><code>{escaped_line}</code></p>')
+            continue
+            
+        # Detect section headers
+        if re.match(r'^(Abstract|\d+\s+[A-Z]|References|Appendix|Figure|Table)', line):
+            flush_paragraph()
+            escaped_line = html.escape(line)
+            output.append(f'<h2 class="section-header"><em>{escaped_line}</em></h2>')
+            in_header = True
+            continue
+            
+        # Handle quotes
+        if quote_pattern.match(line):
+            flush_paragraph()
+            escaped_line = html.escape(line)
+            output.append(f'<blockquote><p>{escaped_line}</p></blockquote>')
+            continue
+            
+        # Handle hyphenated words
+        if line.endswith('-'):
+            current_paragraph.append(line[:-1].strip())
+        else:
+            current_paragraph.append(line)
+            
+        # Handle paragraph breaks after headers
+        if in_header and not line.endswith(('.', '!', '?')):
+            flush_paragraph()
+            in_header = False
+    
+    flush_paragraph()
+    
+    # Post-process HTML
+    html_output = '\n'.join(output)
+    
+    # Fix common citation patterns
+    html_output = re.sub(r'\(([A-Z][a-z]+ et al\. \d{4})\)', r'<cite>\1</cite>', html_output)
+    
+    # Fix escaped characters
+    html_output = html_output.replace('\\ud835', '').replace('\\u2020', '†')
+    
+    # Remove leftover hyphens and fix spacing
+    html_output = re.sub(r'\s+-\s+', '', html_output)
+    html_output = re.sub(r'\s+([.,!?)])', r'\1', html_output)
+    
+    return html_output
+
+def clean_pdf_text(page_number, text):
+    # Decode Unicode escapes and handle surrogate pairs
+    try:
+        decoded = text.encode('latin-1').decode('unicode-escape')
+        decoded = decoded.encode('utf-16', 'surrogatepass').decode('utf-16')
+    except Exception as e:
+        decoded = text  # Fallback if decoding fails
+    
+    article_title_detected = False
+    decoded = re.sub(r'\.\n', '.\n\n', decoded)
+    lines = decoded.split('\n')
+    output = []
+    current_paragraph = []
+    in_header = False
+    email_pattern = re.compile(r'\{.*?\}')
+    affiliation_pattern = re.compile(r'^†')
+    quote_pattern = re.compile(r'^["“]')
+    author_pattern = re.compile(
+        r'^\s*[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?'
+        r'(?:,\s*[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?)*'
+        r'(?:,\s*(?:and|&)\s+[A-Z][a-zA-Z]+(?:\s+[A-Z][a-zA-Z]+)*\s*(?:[†*0-9]+)?)?\s*$'
+    )
+    
+    def flush_paragraph():
+        if current_paragraph:
+            para = ' '.join(current_paragraph)
+            para = re.sub(r'\s+', ' ', para).strip()
+            if para:
+                output.append(para)
+            current_paragraph.clear()
+    
+    for i, line in enumerate(lines):
+        line = line.strip()
+        
+        # Handle special patterns
+        if not line:
+            flush_paragraph()
+            continue
+            
+        # Detect headline (first line, reasonable length, surrounded by empty lines)
+        if not article_title_detected and i == 0 and 3 <= len(line.split()) <= 8 and (len(lines) > 1):
+            flush_paragraph()
+            output.append(f'## {line}')
+            continue
+            
+        # Detect paragraph breaks for ALL paragraphs
+        if not line and current_paragraph:
+            flush_paragraph()
+            output.append('')  # Add empty line between paragraphs
+            continue
+                    
+        # Detect numbered headers like "2.1 Background"
+        numbered_header = re.match(r'^(\d+(?:\.\d+)*)\s+(.+)$', line)
+        if not lines[i-1].strip() and numbered_header:
+            flush_paragraph()
+            level = numbered_header.group(1).count('.') + 1  # Convert 2.1 → level 2
+            header_text = numbered_header.group(2)
+            # Never go beyond ### for subsections
+            md_level = min(level + 1, 6)   # 1 → ##, 2 → ###, 3 → #### etc
+            output.append(f'{"#" * md_level} {header_text}')
+            in_header = True
+            continue            
+            
+                    
+        # Detect authors
+        if page_number == 1 and author_pattern.match(line):
+            # Clean and format author names
+            authors = re.sub(r'[†â€]', '', line)  # Remove affiliation markers
+            authors = re.split(r', | and ', authors)
+            formatted_authors = []
+            for author in authors:
+                if author.strip():
+                    # Handle "First Last" formatting
+                    parts = [p for p in author.strip().split() if p]
+                    formatted = ' '.join(parts)
+                    formatted_authors.append(f'**{formatted}**')
+            
+            # Join with commas and "and"
+            if len(formatted_authors) > 1:
+                joined = ', '.join(formatted_authors[:-1]) + ' and ' + formatted_authors[-1]
+            else:
+                joined = formatted_authors[0]
+            
+            output.append(joined)
+            continue
+            
+        # Detect affiliation
+        if affiliation_pattern.match(line):
+            output.append(f'*{line}*')
+            continue
+            
+        # Detect emails
+        if email_pattern.match(line):
+            output.append(f'`{line}`')
+            continue
+            
+        # Detect section headers
+        if re.match(r'^(Abstract|\d+\s+[A-Z]|References|Appendix|Figure|Table)', line):
+            flush_paragraph()
+            output.append(f'_[{line}]_')
+            in_header = True
+            continue
+            
+           
+        # Handle quotes
+        if quote_pattern.match(line):
+            flush_paragraph()
+            output.append(f'> {line}')
+            continue
+            
+        # Handle hyphenated words
+        if line.endswith('-'):
+            current_paragraph.append(line[:-1].strip())
+        else:
+            current_paragraph.append(line)
+            
+        # Handle paragraph breaks after headers
+        if in_header and not line.endswith(('.', '!', '?')):
+            flush_paragraph()
+            in_header = False
+    
+    flush_paragraph()
+    
+    # Post-processing
+    markdown = '\n\n'.join(output)
+    
+    # Fix common citation patterns
+    markdown = re.sub(r'\(([A-Z][a-z]+ et al\. \d{4})\)', r'[\1]', markdown)
+    
+    # Fix escaped characters
+    markdown = markdown.replace('\\ud835', '').replace('\\u2020', '†')
+    
+    # Remove leftover hyphens and fix spacing
+    markdown = re.sub(r'\s+-\s+', '', markdown)  # Join hyphenated words
+    markdown = re.sub(r'\s+([.,!?)])', r'\1', markdown)  # Fix punctuation spacing
+    
+    
+    return markdown

crawl4ai/prompts.py

@@ -198,7 +198,7 @@ Avoid Common Mistakes:
 - Do NOT add any comments using "//" or "#" in the JSON output. It causes parsing errors.
 - Make sure the JSON is properly formatted with curly braces, square brackets, and commas in the right places.
 - Do not miss closing </blocks> tag at the end of the JSON output.
-- Do not generate the Python coee show me how to do the task, this is your task to extract the information and return it in JSON format.
+- Do not generate the Python code show me how to do the task, this is your task to extract the information and return it in JSON format.
 
 Result
 Output the final list of JSON objects, wrapped in <blocks>...</blocks> XML tags. Make sure to close the tag properly."""
@@ -206,17 +206,6 @@ Output the final list of JSON objects, wrapped in <blocks>...</blocks> XML tags.
 
 PROMPT_FILTER_CONTENT = """Your task is to filter and convert HTML content into clean, focused markdown that's optimized for use with LLMs and information retrieval systems.
 
-INPUT HTML: 
-<|HTML_CONTENT_START|>
-{HTML}
-<|HTML_CONTENT_END|>
-
-
-SPECIFIC INSTRUCTION: 
-<|USER_INSTRUCTION_START|>
-{REQUEST}
-<|USER_INSTRUCTION_END|>
-
 TASK DETAILS:
 1. Content Selection
 - DO: Keep essential information, main content, key details
@@ -240,15 +229,7 @@ TASK DETAILS:
 - DON'T: Fragment related content
 - DON'T: Duplicate information
 
-Example Input:
-<div class="main-content"><h1>Setup Guide</h1><p>Follow these steps...</p></div>
-<div class="sidebar">Related articles...</div>
-
-Example Output:
-# Setup Guide
-Follow these steps...
-
-IMPORTANT: If specific instruction is provided above, prioritize those requirements over these general guidelines.
+IMPORTANT: If user specific instruction is provided, ignore above guideline and prioritize those requirements over these general guidelines.
 
 OUTPUT FORMAT: 
 Wrap your response in <content> tags. Use proper markdown throughout.
@@ -256,7 +237,18 @@ Wrap your response in <content> tags. Use proper markdown throughout.
 [Your markdown content here]
 </content>
 
-Begin filtering now."""
+Begin filtering now.
+
+--------------------------------------------
+
+<|HTML_CONTENT_START|>
+{HTML}
+<|HTML_CONTENT_END|>
+
+<|USER_INSTRUCTION_START|>
+{REQUEST}
+<|USER_INSTRUCTION_END|>
+"""
 
 JSON_SCHEMA_BUILDER= """
 # HTML Schema Generation Instructions

crawl4ai/proxy_strategy.py

@@ -0,0 +1,155 @@
+from typing import List, Dict, Optional
+from abc import ABC, abstractmethod
+from itertools import cycle
+import os
+
+
+class ProxyConfig:
+    def __init__(
+        self,
+        server: str,
+        username: Optional[str] = None,
+        password: Optional[str] = None,
+        ip: Optional[str] = None,
+    ):
+        """Configuration class for a single proxy.
+        
+        Args:
+            server: Proxy server URL (e.g., "http://127.0.0.1:8080")
+            username: Optional username for proxy authentication
+            password: Optional password for proxy authentication
+            ip: Optional IP address for verification purposes
+        """
+        self.server = server
+        self.username = username
+        self.password = password
+        
+        # Extract IP from server if not explicitly provided
+        self.ip = ip or self._extract_ip_from_server()
+    
+    def _extract_ip_from_server(self) -> Optional[str]:
+        """Extract IP address from server URL."""
+        try:
+            # Simple extraction assuming http://ip:port format
+            if "://" in self.server:
+                parts = self.server.split("://")[1].split(":")
+                return parts[0]
+            else:
+                parts = self.server.split(":")
+                return parts[0]
+        except Exception:
+            return None
+    
+    @staticmethod
+    def from_string(proxy_str: str) -> "ProxyConfig":
+        """Create a ProxyConfig from a string in the format 'ip:port:username:password'."""
+        parts = proxy_str.split(":")
+        if len(parts) == 4:  # ip:port:username:password
+            ip, port, username, password = parts
+            return ProxyConfig(
+                server=f"http://{ip}:{port}",
+                username=username,
+                password=password,
+                ip=ip
+            )
+        elif len(parts) == 2:  # ip:port only
+            ip, port = parts
+            return ProxyConfig(
+                server=f"http://{ip}:{port}",
+                ip=ip
+            )
+        else:
+            raise ValueError(f"Invalid proxy string format: {proxy_str}")
+    
+    @staticmethod
+    def from_dict(proxy_dict: Dict) -> "ProxyConfig":
+        """Create a ProxyConfig from a dictionary."""
+        return ProxyConfig(
+            server=proxy_dict.get("server"),
+            username=proxy_dict.get("username"),
+            password=proxy_dict.get("password"),
+            ip=proxy_dict.get("ip")
+        )
+    
+    @staticmethod
+    def from_env(env_var: str = "PROXIES") -> List["ProxyConfig"]:
+        """Load proxies from environment variable.
+        
+        Args:
+            env_var: Name of environment variable containing comma-separated proxy strings
+            
+        Returns:
+            List of ProxyConfig objects
+        """
+        proxies = []
+        try:
+            proxy_list = os.getenv(env_var, "").split(",")
+            for proxy in proxy_list:
+                if not proxy:
+                    continue
+                proxies.append(ProxyConfig.from_string(proxy))
+        except Exception as e:
+            print(f"Error loading proxies from environment: {e}")
+        return proxies
+    
+    def to_dict(self) -> Dict:
+        """Convert to dictionary representation."""
+        return {
+            "server": self.server,
+            "username": self.username,
+            "password": self.password,
+            "ip": self.ip
+        }
+    
+    def clone(self, **kwargs) -> "ProxyConfig":
+        """Create a copy of this configuration with updated values.
+
+        Args:
+            **kwargs: Key-value pairs of configuration options to update
+
+        Returns:
+            ProxyConfig: A new instance with the specified updates
+        """
+        config_dict = self.to_dict()
+        config_dict.update(kwargs)
+        return ProxyConfig.from_dict(config_dict)
+
+
+class ProxyRotationStrategy(ABC):
+    """Base abstract class for proxy rotation strategies"""
+    
+    @abstractmethod
+    async def get_next_proxy(self) -> Optional[Dict]:
+        """Get next proxy configuration from the strategy"""
+        pass
+
+    @abstractmethod
+    def add_proxies(self, proxies: List[Dict]):
+        """Add proxy configurations to the strategy"""
+        pass
+
+class RoundRobinProxyStrategy:
+    """Simple round-robin proxy rotation strategy using ProxyConfig objects"""
+
+    def __init__(self, proxies: List[ProxyConfig] = None):
+        """
+        Initialize with optional list of proxy configurations
+        
+        Args:
+            proxies: List of ProxyConfig objects
+        """
+        self._proxies = []
+        self._proxy_cycle = None
+        if proxies:
+            self.add_proxies(proxies)
+
+    def add_proxies(self, proxies: List[ProxyConfig]):
+        """Add new proxies to the rotation pool"""
+        self._proxies.extend(proxies)
+        self._proxy_cycle = cycle(self._proxies)
+
+    async def get_next_proxy(self) -> Optional[ProxyConfig]:
+        """Get next proxy in round-robin fashion"""
+        if not self._proxy_cycle:
+            return None
+        return next(self._proxy_cycle)

crawl4ai/types.py

@@ -0,0 +1,181 @@
+from typing import TYPE_CHECKING, Union
+
+# Logger types
+AsyncLoggerBase = Union['AsyncLoggerBaseType']
+AsyncLogger = Union['AsyncLoggerType']
+
+# Crawler core types
+AsyncWebCrawler = Union['AsyncWebCrawlerType']
+CacheMode = Union['CacheModeType']
+CrawlResult = Union['CrawlResultType']
+CrawlerHub = Union['CrawlerHubType']
+BrowserProfiler = Union['BrowserProfilerType']
+
+# Configuration types
+BrowserConfig = Union['BrowserConfigType']
+CrawlerRunConfig = Union['CrawlerRunConfigType']
+HTTPCrawlerConfig = Union['HTTPCrawlerConfigType']
+LLMConfig = Union['LLMConfigType']
+
+# Content scraping types
+ContentScrapingStrategy = Union['ContentScrapingStrategyType']
+WebScrapingStrategy = Union['WebScrapingStrategyType']
+LXMLWebScrapingStrategy = Union['LXMLWebScrapingStrategyType']
+
+# Proxy types
+ProxyRotationStrategy = Union['ProxyRotationStrategyType']
+RoundRobinProxyStrategy = Union['RoundRobinProxyStrategyType']
+
+# Extraction types
+ExtractionStrategy = Union['ExtractionStrategyType']
+LLMExtractionStrategy = Union['LLMExtractionStrategyType']
+CosineStrategy = Union['CosineStrategyType']
+JsonCssExtractionStrategy = Union['JsonCssExtractionStrategyType']
+JsonXPathExtractionStrategy = Union['JsonXPathExtractionStrategyType']
+
+# Chunking types
+ChunkingStrategy = Union['ChunkingStrategyType']
+RegexChunking = Union['RegexChunkingType']
+
+# Markdown generation types
+DefaultMarkdownGenerator = Union['DefaultMarkdownGeneratorType']
+MarkdownGenerationResult = Union['MarkdownGenerationResultType']
+
+# Content filter types
+RelevantContentFilter = Union['RelevantContentFilterType']
+PruningContentFilter = Union['PruningContentFilterType']
+BM25ContentFilter = Union['BM25ContentFilterType']
+LLMContentFilter = Union['LLMContentFilterType']
+
+# Dispatcher types
+BaseDispatcher = Union['BaseDispatcherType']
+MemoryAdaptiveDispatcher = Union['MemoryAdaptiveDispatcherType']
+SemaphoreDispatcher = Union['SemaphoreDispatcherType']
+RateLimiter = Union['RateLimiterType']
+CrawlerMonitor = Union['CrawlerMonitorType']
+DisplayMode = Union['DisplayModeType']
+RunManyReturn = Union['RunManyReturnType']
+
+# Docker client
+Crawl4aiDockerClient = Union['Crawl4aiDockerClientType']
+
+# Deep crawling types
+DeepCrawlStrategy = Union['DeepCrawlStrategyType']
+BFSDeepCrawlStrategy = Union['BFSDeepCrawlStrategyType']
+FilterChain = Union['FilterChainType']
+ContentTypeFilter = Union['ContentTypeFilterType']
+DomainFilter = Union['DomainFilterType']
+URLFilter = Union['URLFilterType']
+FilterStats = Union['FilterStatsType']
+SEOFilter = Union['SEOFilterType']
+KeywordRelevanceScorer = Union['KeywordRelevanceScorerType']
+URLScorer = Union['URLScorerType']
+CompositeScorer = Union['CompositeScorerType']
+DomainAuthorityScorer = Union['DomainAuthorityScorerType']
+FreshnessScorer = Union['FreshnessScorerType']
+PathDepthScorer = Union['PathDepthScorerType']
+BestFirstCrawlingStrategy = Union['BestFirstCrawlingStrategyType']
+DFSDeepCrawlStrategy = Union['DFSDeepCrawlStrategyType']
+DeepCrawlDecorator = Union['DeepCrawlDecoratorType']
+
+# Only import types during type checking to avoid circular imports
+if TYPE_CHECKING:
+    # Logger imports
+    from .async_logger import (
+        AsyncLoggerBase as AsyncLoggerBaseType,
+        AsyncLogger as AsyncLoggerType,
+    )
+    
+    # Crawler core imports
+    from .async_webcrawler import (
+        AsyncWebCrawler as AsyncWebCrawlerType,
+        CacheMode as CacheModeType,
+    )
+    from .models import CrawlResult as CrawlResultType
+    from .hub import CrawlerHub as CrawlerHubType
+    from .browser_profiler import BrowserProfiler as BrowserProfilerType
+    
+    # Configuration imports
+    from .async_configs import (
+        BrowserConfig as BrowserConfigType,
+        CrawlerRunConfig as CrawlerRunConfigType,
+        HTTPCrawlerConfig as HTTPCrawlerConfigType,
+        LLMConfig as LLMConfigType,
+    )
+    
+    # Content scraping imports
+    from .content_scraping_strategy import (
+        ContentScrapingStrategy as ContentScrapingStrategyType,
+        WebScrapingStrategy as WebScrapingStrategyType,
+        LXMLWebScrapingStrategy as LXMLWebScrapingStrategyType,
+    )
+    
+    # Proxy imports
+    from .proxy_strategy import (
+        ProxyRotationStrategy as ProxyRotationStrategyType,
+        RoundRobinProxyStrategy as RoundRobinProxyStrategyType,
+    )
+    
+    # Extraction imports
+    from .extraction_strategy import (
+        ExtractionStrategy as ExtractionStrategyType,
+        LLMExtractionStrategy as LLMExtractionStrategyType,
+        CosineStrategy as CosineStrategyType,
+        JsonCssExtractionStrategy as JsonCssExtractionStrategyType,
+        JsonXPathExtractionStrategy as JsonXPathExtractionStrategyType,
+    )
+    
+    # Chunking imports
+    from .chunking_strategy import (
+        ChunkingStrategy as ChunkingStrategyType,
+        RegexChunking as RegexChunkingType,
+    )
+    
+    # Markdown generation imports
+    from .markdown_generation_strategy import (
+        DefaultMarkdownGenerator as DefaultMarkdownGeneratorType,
+    )
+    from .models import MarkdownGenerationResult as MarkdownGenerationResultType
+    
+    # Content filter imports
+    from .content_filter_strategy import (
+        RelevantContentFilter as RelevantContentFilterType,
+        PruningContentFilter as PruningContentFilterType,
+        BM25ContentFilter as BM25ContentFilterType,
+        LLMContentFilter as LLMContentFilterType,
+    )
+    
+    # Dispatcher imports
+    from .async_dispatcher import (
+        BaseDispatcher as BaseDispatcherType,
+        MemoryAdaptiveDispatcher as MemoryAdaptiveDispatcherType,
+        SemaphoreDispatcher as SemaphoreDispatcherType,
+        RateLimiter as RateLimiterType,
+        CrawlerMonitor as CrawlerMonitorType,
+        DisplayMode as DisplayModeType,
+        RunManyReturn as RunManyReturnType,
+    )
+    
+    # Docker client
+    from .docker_client import Crawl4aiDockerClient as Crawl4aiDockerClientType
+    
+    # Deep crawling imports
+    from .deep_crawling import (
+        DeepCrawlStrategy as DeepCrawlStrategyType,
+        BFSDeepCrawlStrategy as BFSDeepCrawlStrategyType,
+        FilterChain as FilterChainType,
+        ContentTypeFilter as ContentTypeFilterType,
+        DomainFilter as DomainFilterType,
+        URLFilter as URLFilterType,
+        FilterStats as FilterStatsType,
+        SEOFilter as SEOFilterType,
+        KeywordRelevanceScorer as KeywordRelevanceScorerType,
+        URLScorer as URLScorerType,
+        CompositeScorer as CompositeScorerType,
+        DomainAuthorityScorer as DomainAuthorityScorerType,
+        FreshnessScorer as FreshnessScorerType,
+        PathDepthScorer as PathDepthScorerType,
+        BestFirstCrawlingStrategy as BestFirstCrawlingStrategyType,
+        DFSDeepCrawlStrategy as DFSDeepCrawlStrategyType,
+        DeepCrawlDecorator as DeepCrawlDecoratorType,
+    )

crawl4ai/user_agent_generator.py

@@ -3,12 +3,11 @@ from typing import Optional, Literal, List, Dict, Tuple
 import re
 
 from abc import ABC, abstractmethod
-import random
 from fake_useragent import UserAgent
 import requests
 from lxml import html
 import json
-from typing import Optional, List, Union, Dict
+from typing import Union
 
 class UAGen(ABC):
    @abstractmethod

crawl4ai/utils.py

@@ -1,20 +1,24 @@
 import time
-from urllib.parse import urlparse
 from concurrent.futures import ThreadPoolExecutor, as_completed
 from bs4 import BeautifulSoup, Comment, element, Tag, NavigableString
 import json
 import html
+import lxml
 import re
 import os
 import platform
 from .prompts import PROMPT_EXTRACT_BLOCKS
-from .config import *
+from array import array
+from .html2text import html2text, CustomHTML2Text
+# from .config import *
+from .config import MIN_WORD_THRESHOLD, IMAGE_DESCRIPTION_MIN_WORD_THRESHOLD, IMAGE_SCORE_THRESHOLD, DEFAULT_PROVIDER, PROVIDER_MODELS
+import httpx
+from socket import gaierror
 from pathlib import Path
-from typing import Dict, Any
+from typing import Dict, Any, List, Optional, Callable
 from urllib.parse import urljoin
 import requests
 from requests.exceptions import InvalidSchema
-from typing import Dict, Any
 import xxhash
 from colorama import Fore, Style, init
 import textwrap
@@ -25,9 +29,188 @@ import asyncio
 
 import sqlite3
 import hashlib
-from urllib.parse import urljoin, urlparse
+
 from urllib.robotparser import RobotFileParser
 import aiohttp
+from urllib.parse import urlparse, urlunparse
+from functools import lru_cache
+
+from packaging import version
+from . import __version__
+from typing import Sequence
+
+from itertools import chain
+from collections import deque
+from typing import  Generator, Iterable
+
+def chunk_documents(
+    documents: Iterable[str],
+    chunk_token_threshold: int,
+    overlap: int,
+    word_token_rate: float = 0.75,
+    tokenizer: Optional[Callable[[str], List[str]]] = None,
+) -> Generator[str, None, None]:
+    """
+    Efficiently chunks documents into token-limited sections with overlap between chunks.
+
+    Args:
+        documents: Iterable of document strings
+        chunk_token_threshold: Maximum tokens per chunk
+        overlap: Number of tokens to overlap between chunks
+        word_token_rate: Token estimate per word when not using a tokenizer
+        tokenizer: Function that splits text into tokens (if available)
+
+    Yields:
+        Text chunks as strings
+    """
+    token_queue = deque()
+    contribution_queue = deque()
+    current_token_count = 0.0
+
+    for doc in documents:
+        # Tokenize document
+        if tokenizer:
+            tokens = tokenizer(doc)
+            contributions = [1.0] * len(tokens)
+        else:
+            tokens = doc.split()
+            contributions = [word_token_rate] * len(tokens)
+
+        # Add to processing queues
+        token_queue.extend(tokens)
+        contribution_queue.extend(contributions)
+        current_token_count += sum(contributions)
+
+        # Process full chunks
+        while current_token_count >= chunk_token_threshold:
+            # Find chunk split point
+            chunk_tokens = []
+            chunk_contrib = []
+            chunk_total = 0.0
+            
+            # Build chunk up to threshold
+            while contribution_queue:
+                next_contrib = contribution_queue[0]
+                if chunk_total + next_contrib > chunk_token_threshold:
+                    break
+                
+                chunk_total += next_contrib
+                chunk_contrib.append(contribution_queue.popleft())
+                chunk_tokens.append(token_queue.popleft())
+
+            # Handle edge case where first token exceeds threshold
+            if not chunk_contrib:  # Single token exceeds threshold
+                chunk_contrib.append(contribution_queue.popleft())
+                chunk_tokens.append(token_queue.popleft())
+
+            # Calculate overlap
+            overlap_total = 0.0
+            overlap_idx = 0
+            for contrib in reversed(chunk_contrib):
+                if overlap_total + contrib > overlap:
+                    break
+                overlap_total += contrib
+                overlap_idx += 1
+
+            # Prepend overlap to queues
+            if overlap_idx > 0:
+                overlap_tokens = chunk_tokens[-overlap_idx:]
+                overlap_contrib = chunk_contrib[-overlap_idx:]
+                
+                token_queue.extendleft(reversed(overlap_tokens))
+                contribution_queue.extendleft(reversed(overlap_contrib))
+                current_token_count += overlap_total
+
+            # Update current token count and yield chunk
+            current_token_count -= sum(chunk_contrib)
+            yield " ".join(chunk_tokens[:len(chunk_tokens)-overlap_idx] if overlap_idx else chunk_tokens)
+
+    # Yield remaining tokens
+    if token_queue:
+        yield " ".join(token_queue)
+
+def merge_chunks(
+    docs: Sequence[str], 
+    target_size: int,
+    overlap: int = 0,
+    word_token_ratio: float = 1.0,
+    splitter: Callable = None
+) -> List[str]:
+    """Merges documents into chunks of specified token size.
+    
+    Args:
+        docs: Input documents
+        target_size: Desired token count per chunk
+        overlap: Number of tokens to overlap between chunks
+        word_token_ratio: Multiplier for word->token conversion
+    """
+    # Pre-tokenize all docs and store token counts
+    splitter = splitter or str.split
+    token_counts = array('I')
+    all_tokens: List[List[str]] = []
+    total_tokens = 0
+    
+    for doc in docs:
+        tokens = doc.split()
+        count = int(len(tokens) * word_token_ratio)
+        if count:  # Skip empty docs
+            token_counts.append(count)
+            all_tokens.append(tokens)
+            total_tokens += count
+    
+    if not total_tokens:
+        return []
+
+    # Pre-allocate chunks
+    num_chunks = max(1, (total_tokens + target_size - 1) // target_size)
+    chunks: List[List[str]] = [[] for _ in range(num_chunks)]
+    
+    curr_chunk = 0
+    curr_size = 0
+    
+    # Distribute tokens
+    for tokens in chain.from_iterable(all_tokens):
+        if curr_size >= target_size and curr_chunk < num_chunks - 1:
+            if overlap > 0:
+                overlap_tokens = chunks[curr_chunk][-overlap:]
+                curr_chunk += 1
+                chunks[curr_chunk].extend(overlap_tokens)
+                curr_size = len(overlap_tokens)
+            else:
+                curr_chunk += 1
+                curr_size = 0
+                
+        chunks[curr_chunk].append(tokens)
+        curr_size += 1
+
+    # Return only non-empty chunks
+    return [' '.join(chunk) for chunk in chunks if chunk]
+
+
+class VersionManager:
+    def __init__(self):
+        self.home_dir = Path.home() / ".crawl4ai"
+        self.version_file = self.home_dir / "version.txt"
+
+    def get_installed_version(self):
+        """Get the version recorded in home directory"""
+        if not self.version_file.exists():
+            return None
+        try:
+            return version.parse(self.version_file.read_text().strip())
+        except Exception as _ex:
+            return None
+
+    def update_version(self):
+        """Update the version file to current library version"""
+        self.version_file.write_text(__version__.__version__)
+
+    def needs_update(self):
+        """Check if database needs update based on version"""
+        installed = self.get_installed_version()
+        current = version.parse(__version__.__version__)
+        return installed is None or installed < current
+
 
 class RobotsParser:
     # Default 7 days cache TTL
@@ -107,7 +290,7 @@ class RobotsParser:
             domain = parsed.netloc
             if not domain:
                 return True
-        except:
+        except Exception as _ex:
             return True
 
         # Fast path - check cache first
@@ -127,7 +310,7 @@ class RobotsParser:
                             self._cache_rules(domain, rules)
                         else:
                             return True
-            except:
+            except Exception as _ex:
                 # On any error (timeout, connection failed, etc), allow access
                 return True
 
@@ -160,6 +343,77 @@ class InvalidCSSSelectorError(Exception):
     pass
 
 
+SPLITS = bytearray([
+    # Control chars (0-31) + space (32)
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    # Special chars (33-47): ! " # $ % & ' ( ) * + , - . /
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+    # Numbers (48-57): Treat as non-splits
+    0,0,0,0,0,0,0,0,0,0,
+    # More special chars (58-64): : ; < = > ? @
+    1,1,1,1,1,1,1,
+    # Uppercase (65-90): Keep
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    # More special chars (91-96): [ \ ] ^ _ `
+    1,1,1,1,1,1,
+    # Lowercase (97-122): Keep
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    # Special chars (123-126): { | } ~
+    1,1,1,1,
+    # Extended ASCII
+    *([1] * 128)
+])
+
+# Additional split chars for HTML/code
+HTML_CODE_CHARS = {
+    # HTML specific
+    '•', '►', '▼', '©', '®', '™', '→', '⇒', '≈', '≤', '≥',
+    # Programming symbols  
+    '+=', '-=', '*=', '/=', '=>', '<=>', '!=', '==', '===',
+    '++', '--', '<<', '>>', '&&', '||', '??', '?:', '?.', 
+    # Common Unicode
+    '…', '"', '"', ''', ''', '«', '»', '—', '–',
+    # Additional splits
+    '+', '=', '~', '@', '#', '$', '%', '^', '&', '*',
+    '(', ')', '{', '}', '[', ']', '|', '\\', '/', '`',
+    '<', '>', ',', '.', '?', '!', ':', ';', '-', '_'
+}
+
+def advanced_split(text: str) -> list[str]:
+    result = []
+    word = array('u')
+    
+    i = 0
+    text_len = len(text)
+    
+    while i < text_len:
+        char = text[i]
+        o = ord(char)
+        
+        # Fast path for ASCII
+        if o < 256 and SPLITS[o]:
+            if word:
+                result.append(word.tounicode())
+                word = array('u')
+        # Check for multi-char symbols
+        elif i < text_len - 1:
+            two_chars = char + text[i + 1]
+            if two_chars in HTML_CODE_CHARS:
+                if word:
+                    result.append(word.tounicode())
+                    word = array('u')
+                i += 1  # Skip next char since we used it
+            else:
+                word.append(char)
+        else:
+            word.append(char)
+        i += 1
+            
+    if word:
+        result.append(word.tounicode())
+        
+    return result
+
 def create_box_message(
     message: str,
     type: str = "info",
@@ -1124,7 +1378,7 @@ def get_content_of_website_optimized(
             src = img.get("src", "")
             if base64_pattern.match(src):
                 img["src"] = base64_pattern.sub("", src)
-        except:
+        except Exception as _ex:
             pass
 
     cleaned_html = str(body).replace("\n\n", "\n").replace("  ", " ")
@@ -1162,7 +1416,7 @@ def extract_metadata_using_lxml(html, doc=None):
 
     if doc is None:
         try:
-            doc = lhtml.document_fromstring(html)
+            doc = lxml.html.document_fromstring(html)
         except Exception:
             return {}
 
@@ -1478,10 +1732,10 @@ def extract_blocks_batch(batch_data, provider="groq/llama3-70b-8192", api_token=
 
     messages = []
 
-    for url, html in batch_data:
+    for url, _html in batch_data:
         variable_values = {
             "URL": url,
-            "HTML": html,
+            "HTML": _html,
         }
 
         prompt_with_variables = PROMPT_EXTRACT_BLOCKS
@@ -1663,7 +1917,7 @@ def fast_format_html(html_string):
     indent = 0
     indent_str = "  "  # Two spaces for indentation
     formatted = []
-    in_content = False
+    # in_content = False
 
     # Split by < and > to separate tags and content
     parts = html_string.replace(">", ">\n").replace("<", "\n<").split("\n")
@@ -1709,6 +1963,82 @@ def normalize_url(href, base_url):
     return normalized
 
 
+def normalize_url_for_deep_crawl(href, base_url):
+    """Normalize URLs to ensure consistent format"""
+    from urllib.parse import urljoin, urlparse, urlunparse, parse_qs, urlencode
+
+    # Handle None or empty values
+    if not href:
+        return None
+
+    # Use urljoin to handle relative URLs
+    full_url = urljoin(base_url, href.strip())
+    
+    # Parse the URL for normalization
+    parsed = urlparse(full_url)
+    
+    # Convert hostname to lowercase
+    netloc = parsed.netloc.lower()
+    
+    # Remove fragment entirely
+    fragment = ''
+    
+    # Normalize query parameters if needed
+    query = parsed.query
+    if query:
+        # Parse query parameters
+        params = parse_qs(query)
+        
+        # Remove tracking parameters (example - customize as needed)
+        tracking_params = ['utm_source', 'utm_medium', 'utm_campaign', 'ref', 'fbclid']
+        for param in tracking_params:
+            if param in params:
+                del params[param]
+                
+        # Rebuild query string, sorted for consistency
+        query = urlencode(params, doseq=True) if params else ''
+    
+    # Build normalized URL
+    normalized = urlunparse((
+        parsed.scheme,
+        netloc,
+        parsed.path.rstrip('/') or '/',  # Normalize trailing slash
+        parsed.params,
+        query,
+        fragment
+    ))
+    
+    return normalized
+
+@lru_cache(maxsize=10000)
+def efficient_normalize_url_for_deep_crawl(href, base_url):
+    """Efficient URL normalization with proper parsing"""
+    from urllib.parse import urljoin
+    
+    if not href:
+        return None
+    
+    # Resolve relative URLs
+    full_url = urljoin(base_url, href.strip())
+    
+    # Use proper URL parsing
+    parsed = urlparse(full_url)
+    
+    # Only perform the most critical normalizations
+    # 1. Lowercase hostname
+    # 2. Remove fragment
+    normalized = urlunparse((
+        parsed.scheme,
+        parsed.netloc.lower(),
+        parsed.path,
+        parsed.params,
+        parsed.query,
+        ''  # Remove fragment
+    ))
+    
+    return normalized
+
+
 def normalize_url_tmp(href, base_url):
     """Normalize URLs to ensure consistent format"""
     # Extract protocol and domain from base URL
@@ -2207,3 +2537,83 @@ def get_error_context(exc_info, context_lines: int = 5):
         "function": func_name,
         "code_context": code_context,
     }
+
+def truncate(value, threshold):
+    if len(value) > threshold:
+        return value[:threshold] + '...'  # Add ellipsis to indicate truncation
+    return value
+
+def optimize_html(html_str, threshold=200):
+    root = lxml.html.fromstring(html_str)
+    
+    for _element in root.iter():
+        # Process attributes
+        for attr in list(_element.attrib):
+            _element.attrib[attr] = truncate(_element.attrib[attr], threshold)
+        
+        # Process text content
+        if _element.text and len(_element.text) > threshold:
+            _element.text = truncate(_element.text, threshold)
+            
+        # Process tail text
+        if _element.tail and len(_element.tail) > threshold:
+            _element.tail = truncate(_element.tail, threshold)
+    
+    return lxml.html.tostring(root, encoding='unicode', pretty_print=False)
+
+class HeadPeekr:
+    @staticmethod
+    async def fetch_head_section(url, timeout=0.3):
+        headers = {
+            "User-Agent": "Mozilla/5.0 (compatible; CrawlBot/1.0)",
+            "Accept": "text/html",
+            "Connection": "close"  # Force close after response
+        }
+        try:
+            async with httpx.AsyncClient(timeout=timeout) as client:
+                response = await client.get(url, headers=headers, follow_redirects=True)
+                
+                # Handle redirects explicitly by using the final URL
+                if response.url != url:
+                    url = str(response.url)
+                    response = await client.get(url, headers=headers)
+                
+                content = b""
+                async for chunk in response.aiter_bytes():
+                    content += chunk
+                    if b"</head>" in content:
+                        break  # Stop after detecting </head>
+                return content.split(b"</head>")[0] + b"</head>"
+        except (httpx.HTTPError, gaierror) :
+            return None
+
+    @staticmethod
+    async def peek_html(url, timeout=0.3):
+        head_section = await HeadPeekr.fetch_head_section(url, timeout=timeout)
+        if head_section:
+            return head_section.decode("utf-8", errors="ignore")
+        return None
+
+    @staticmethod
+    def extract_meta_tags(head_content: str):
+        meta_tags = {}
+        
+        # Find all meta tags
+        meta_pattern = r'<meta[^>]+>'
+        for meta_tag in re.finditer(meta_pattern, head_content):
+            tag = meta_tag.group(0)
+            
+            # Extract name/property and content
+            name_match = re.search(r'name=["\'](.*?)["\']', tag)
+            property_match = re.search(r'property=["\'](.*?)["\']', tag)
+            content_match = re.search(r'content=["\'](.*?)["\']', tag)
+            
+            if content_match and (name_match or property_match):
+                key = name_match.group(1) if name_match else property_match.group(1)
+                meta_tags[key] = content_match.group(1)
+                
+        return meta_tags
+
+    def get_title(head_content: str):
+        title_match = re.search(r'<title>(.*?)</title>', head_content, re.IGNORECASE | re.DOTALL)
+        return title_match.group(1) if title_match else None

deploy/aws/Dockerfile

@@ -0,0 +1,137 @@
+FROM python:3.10-slim
+
+# Set build arguments
+ARG APP_HOME=/app
+ARG GITHUB_REPO=https://github.com/unclecode/crawl4ai.git
+ARG GITHUB_BRANCH=next
+ARG USE_LOCAL=False
+ARG CONFIG_PATH=""
+
+ENV PYTHONFAULTHANDLER=1 \
+    PYTHONHASHSEED=random \
+    PYTHONUNBUFFERED=1 \
+    PIP_NO_CACHE_DIR=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_DEFAULT_TIMEOUT=100 \
+    DEBIAN_FRONTEND=noninteractive \
+    REDIS_HOST=localhost \
+    REDIS_PORT=6379
+
+ARG PYTHON_VERSION=3.10
+ARG INSTALL_TYPE=default
+ARG ENABLE_GPU=false
+ARG TARGETARCH
+
+LABEL maintainer="unclecode"
+LABEL description="🔥🕷️ Crawl4AI: Open-source LLM Friendly Web Crawler & scraper"
+LABEL version="1.0"    
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    curl \
+    wget \
+    gnupg \
+    git \
+    cmake \
+    pkg-config \
+    python3-dev \
+    libjpeg-dev \
+    redis-server \
+    supervisor \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libglib2.0-0 \
+    libnss3 \
+    libnspr4 \
+    libatk1.0-0 \
+    libatk-bridge2.0-0 \
+    libcups2 \
+    libdrm2 \
+    libdbus-1-3 \
+    libxcb1 \
+    libxkbcommon0 \
+    libx11-6 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxext6 \
+    libxfixes3 \
+    libxrandr2 \
+    libgbm1 \
+    libpango-1.0-0 \
+    libcairo2 \
+    libasound2 \
+    libatspi2.0-0 \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN if [ "$ENABLE_GPU" = "true" ] && [ "$TARGETARCH" = "amd64" ] ; then \
+    apt-get update && apt-get install -y --no-install-recommends \
+    nvidia-cuda-toolkit \
+    && rm -rf /var/lib/apt/lists/* ; \
+else \
+    echo "Skipping NVIDIA CUDA Toolkit installation (unsupported platform or GPU disabled)"; \
+fi
+
+RUN if [ "$TARGETARCH" = "arm64" ]; then \
+    echo "🦾 Installing ARM-specific optimizations"; \
+    apt-get update && apt-get install -y --no-install-recommends \
+    libopenblas-dev \
+    && rm -rf /var/lib/apt/lists/*; \
+elif [ "$TARGETARCH" = "amd64" ]; then \
+    echo "🖥️ Installing AMD64-specific optimizations"; \
+    apt-get update && apt-get install -y --no-install-recommends \
+    libomp-dev \
+    && rm -rf /var/lib/apt/lists/*; \
+else \
+    echo "Skipping platform-specific optimizations (unsupported platform)"; \
+fi
+
+WORKDIR ${APP_HOME}
+
+RUN git clone --branch ${GITHUB_BRANCH} ${GITHUB_REPO} /tmp/crawl4ai
+
+COPY docker/supervisord.conf .
+COPY docker/requirements.txt .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+RUN if [ "$INSTALL_TYPE" = "all" ] ; then \
+        pip install "/tmp/crawl4ai/[all]" && \
+        python -m nltk.downloader punkt stopwords && \
+        python -m crawl4ai.model_loader ; \
+    elif [ "$INSTALL_TYPE" = "torch" ] ; then \
+        pip install "/tmp/crawl4ai/[torch]" ; \
+    elif [ "$INSTALL_TYPE" = "transformer" ] ; then \
+        pip install "/tmp/crawl4ai/[transformer]" && \
+        python -m crawl4ai.model_loader ; \
+    else \
+        pip install "/tmp/crawl4ai" ; \
+    fi
+    
+RUN pip install --no-cache-dir --upgrade pip && \
+    python -c "import crawl4ai; print('✅ crawl4ai is ready to rock!')" && \
+    python -c "from playwright.sync_api import sync_playwright; print('✅ Playwright is feeling dramatic!')"
+    
+RUN playwright install --with-deps chromium
+
+COPY docker/* ${APP_HOME}/
+RUN if [ -n "$CONFIG_PATH" ] && [ -f "$CONFIG_PATH" ]; then \
+    echo "Using custom config from $CONFIG_PATH" && \
+    cp $CONFIG_PATH /app/config.yml; \
+fi
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD bash -c '\
+    MEM=$(free -m | awk "/^Mem:/{print \$2}"); \
+    if [ $MEM -lt 2048 ]; then \
+        echo "⚠️ Warning: Less than 2GB RAM available! Your container might need a memory boost! 🚀"; \
+        exit 1; \
+    fi && \
+    redis-cli ping > /dev/null && \
+    curl -f http://localhost:8000/health || exit 1'
+
+# EXPOSE 6379
+
+CMD ["supervisord", "-c", "supervisord.conf"]
+    

deploy/aws/deploy-config.yml

@@ -0,0 +1,3 @@
+project_name: PROJECT_NAME
+domain_name: DOMAIN_NAME
+aws_region: AWS_REGION

deploy/aws/deploy.py

@@ -0,0 +1,729 @@
+#!/usr/bin/env python3
+import argparse
+import subprocess
+import sys
+import time
+import json
+import yaml
+import requests
+import os
+
+# Steps for deployment
+STEPS = [
+    "refresh_aws_auth",
+    "fetch_or_create_vpc_and_subnets",
+    "create_ecr_repositories",
+    "create_iam_role",
+    "create_security_groups",
+    "request_acm_certificate",
+    "build_and_push_docker",
+    "create_task_definition",
+    "setup_alb",
+    "deploy_ecs_service",
+    "configure_custom_domain",
+    "test_endpoints"
+]
+
+# Utility function to prompt user for confirmation
+def confirm_step(step_name):
+    while True:
+        response = input(f"Proceed with {step_name}? (yes/no): ").strip().lower()
+        if response in ["yes", "no"]:
+            return response == "yes"
+        print("Please enter 'yes' or 'no'.")
+
+# Utility function to run AWS CLI or shell commands and handle errors
+def run_command(command, error_message, additional_diagnostics=None, cwd="."):
+    try:
+        result = subprocess.run(command, capture_output=True, text=True, check=True, cwd=cwd)
+        return result
+    except subprocess.CalledProcessError as e:
+        with open("error_context.md", "w") as f:
+            f.write(f"{error_message}:\n")
+            f.write(f"Command: {' '.join(command)}\n")
+            f.write(f"Exit Code: {e.returncode}\n")
+            f.write(f"Stdout: {e.stdout}\n")
+            f.write(f"Stderr: {e.stderr}\n")
+            if additional_diagnostics:
+                for diag_cmd in additional_diagnostics:
+                    diag_result = subprocess.run(diag_cmd, capture_output=True, text=True)
+                    f.write(f"\nDiagnostic command: {' '.join(diag_cmd)}\n")
+                    f.write(f"Stdout: {diag_result.stdout}\n")
+                    f.write(f"Stderr: {diag_result.stderr}\n")
+        raise Exception(f"{error_message}: {e.stderr}")
+
+# Utility function to load or initialize state
+def load_state(project_name):
+    state_file = f"{project_name}-state.json"
+    if os.path.exists(state_file):
+        with open(state_file, "r") as f:
+            return json.load(f)
+    return {"last_step": -1}
+
+# Utility function to save state
+def save_state(project_name, state):
+    state_file = f"{project_name}-state.json"
+    with open(state_file, "w") as f:
+        json.dump(state, f, indent=4)
+
+# DNS Check Function
+def check_dns_propagation(domain, alb_dns):
+    try:
+        result = subprocess.run(["dig", "+short", domain], capture_output=True, text=True)
+        if alb_dns in result.stdout:
+            return True
+        return False
+    except Exception as e:
+        print(f"Failed to check DNS: {e}")
+        return False
+
+# Step Functions
+def refresh_aws_auth(project_name, state, config):
+    if state["last_step"] >= 0:
+        print("Skipping refresh_aws_auth (already completed)")
+        return
+    if not confirm_step("Refresh AWS authentication"):
+        sys.exit("User aborted.")
+    run_command(
+        ["aws", "sts", "get-caller-identity"],
+        "Failed to verify AWS credentials"
+    )
+    print("AWS authentication verified.")
+    state["last_step"] = 0
+    save_state(project_name, state)
+
+def fetch_or_create_vpc_and_subnets(project_name, state, config):
+    if state["last_step"] >= 1:
+        print("Skipping fetch_or_create_vpc_and_subnets (already completed)")
+        return state["vpc_id"], state["public_subnets"]
+    if not confirm_step("Fetch or Create VPC and Subnets"):
+        sys.exit("User aborted.")
+    
+    # Fetch AWS account ID
+    result = run_command(
+        ["aws", "sts", "get-caller-identity"],
+        "Failed to get AWS account ID"
+    )
+    account_id = json.loads(result.stdout)["Account"]
+    
+    # Fetch default VPC
+    result = run_command(
+        ["aws", "ec2", "describe-vpcs", "--filters", "Name=isDefault,Values=true", "--region", config["aws_region"]],
+        "Failed to describe VPCs"
+    )
+    vpcs = json.loads(result.stdout).get("Vpcs", [])
+    if not vpcs:
+        result = run_command(
+            ["aws", "ec2", "create-vpc", "--cidr-block", "10.0.0.0/16", "--region", config["aws_region"]],
+            "Failed to create VPC"
+        )
+        vpc_id = json.loads(result.stdout)["Vpc"]["VpcId"]
+        run_command(
+            ["aws", "ec2", "modify-vpc-attribute", "--vpc-id", vpc_id, "--enable-dns-hostnames", "--region", config["aws_region"]],
+            "Failed to enable DNS hostnames"
+        )
+    else:
+        vpc_id = vpcs[0]["VpcId"]
+    
+    # Fetch or create subnets
+    result = run_command(
+        ["aws", "ec2", "describe-subnets", "--filters", f"Name=vpc-id,Values={vpc_id}", "--region", config["aws_region"]],
+        "Failed to describe subnets"
+    )
+    subnets = json.loads(result.stdout).get("Subnets", [])
+    if len(subnets) < 2:
+        azs = json.loads(run_command(
+            ["aws", "ec2", "describe-availability-zones", "--region", config["aws_region"]],
+            "Failed to describe availability zones"
+        ).stdout)["AvailabilityZones"][:2]
+        subnet_ids = []
+        for i, az in enumerate(azs):
+            az_name = az["ZoneName"]
+            result = run_command(
+                ["aws", "ec2", "create-subnet", "--vpc-id", vpc_id, "--cidr-block", f"10.0.{i}.0/24", "--availability-zone", az_name, "--region", config["aws_region"]],
+                f"Failed to create subnet in {az_name}"
+            )
+            subnet_id = json.loads(result.stdout)["Subnet"]["SubnetId"]
+            subnet_ids.append(subnet_id)
+            run_command(
+                ["aws", "ec2", "modify-subnet-attribute", "--subnet-id", subnet_id, "--map-public-ip-on-launch", "--region", config["aws_region"]],
+                f"Failed to make subnet {subnet_id} public"
+            )
+    else:
+        subnet_ids = [s["SubnetId"] for s in subnets[:2]]
+    
+    # Ensure internet gateway
+    result = run_command(
+        ["aws", "ec2", "describe-internet-gateways", "--filters", f"Name=attachment.vpc-id,Values={vpc_id}", "--region", config["aws_region"]],
+        "Failed to describe internet gateways"
+    )
+    igws = json.loads(result.stdout).get("InternetGateways", [])
+    if not igws:
+        result = run_command(
+            ["aws", "ec2", "create-internet-gateway", "--region", config["aws_region"]],
+            "Failed to create internet gateway"
+        )
+        igw_id = json.loads(result.stdout)["InternetGateway"]["InternetGatewayId"]
+        run_command(
+            ["aws", "ec2", "attach-internet-gateway", "--vpc-id", vpc_id, "--internet-gateway-id", igw_id, "--region", config["aws_region"]],
+            "Failed to attach internet gateway"
+        )
+    
+    state["vpc_id"] = vpc_id
+    state["public_subnets"] = subnet_ids
+    state["last_step"] = 1
+    save_state(project_name, state)
+    print(f"VPC ID: {vpc_id}, Subnets: {subnet_ids}")
+    return vpc_id, subnet_ids
+
+def create_ecr_repositories(project_name, state, config):
+    if state["last_step"] >= 2:
+        print("Skipping create_ecr_repositories (already completed)")
+        return
+    if not confirm_step("Create ECR Repositories"):
+        sys.exit("User aborted.")
+    
+    account_id = json.loads(run_command(
+        ["aws", "sts", "get-caller-identity"],
+        "Failed to get AWS account ID"
+    ).stdout)["Account"]
+    repos = [project_name, f"{project_name}-nginx"]
+    for repo in repos:
+        result = subprocess.run(
+            ["aws", "ecr", "describe-repositories", "--repository-names", repo, "--region", config["aws_region"]],
+            capture_output=True, text=True
+        )
+        if result.returncode != 0:
+            run_command(
+                ["aws", "ecr", "create-repository", "--repository-name", repo, "--region", config["aws_region"]],
+                f"Failed to create ECR repository {repo}"
+            )
+        print(f"ECR repository {repo} is ready.")
+    state["last_step"] = 2
+    save_state(project_name, state)
+
+def create_iam_role(project_name, state, config):
+    if state["last_step"] >= 3:
+        print("Skipping create_iam_role (already completed)")
+        return
+    if not confirm_step("Create IAM Role"):
+        sys.exit("User aborted.")
+    
+    account_id = json.loads(run_command(
+        ["aws", "sts", "get-caller-identity"],
+        "Failed to get AWS account ID"
+    ).stdout)["Account"]
+    role_name = "ecsTaskExecutionRole"
+    trust_policy = {
+        "Version": "2012-10-17",
+        "Statement": [
+            {
+                "Effect": "Allow",
+                "Principal": {"Service": "ecs-tasks.amazonaws.com"},
+                "Action": "sts:AssumeRole"
+            }
+        ]
+    }
+    with open("trust_policy.json", "w") as f:
+        json.dump(trust_policy, f)
+    
+    result = subprocess.run(
+        ["aws", "iam", "get-role", "--role-name", role_name],
+        capture_output=True, text=True
+    )
+    if result.returncode != 0:
+        run_command(
+            ["aws", "iam", "create-role", "--role-name", role_name, "--assume-role-policy-document", "file://trust_policy.json"],
+            f"Failed to create IAM role {role_name}"
+        )
+    run_command(
+        ["aws", "iam", "attach-role-policy", "--role-name", role_name, "--policy-arn", "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"],
+        "Failed to attach ECS task execution policy"
+    )
+    os.remove("trust_policy.json")
+    state["execution_role_arn"] = f"arn:aws:iam::{account_id}:role/{role_name}"
+    state["last_step"] = 3
+    save_state(project_name, state)
+    print(f"IAM role {role_name} configured.")
+
+def create_security_groups(project_name, state, config):
+    if state["last_step"] >= 4:
+        print("Skipping create_security_groups (already completed)")
+        return state["alb_sg_id"], state["ecs_sg_id"]
+    if not confirm_step("Create Security Groups"):
+        sys.exit("User aborted.")
+    
+    vpc_id = state["vpc_id"]
+    alb_sg_name = f"{project_name}-alb-sg"
+    result = run_command(
+        ["aws", "ec2", "describe-security-groups", "--filters", f"Name=vpc-id,Values={vpc_id}", f"Name=group-name,Values={alb_sg_name}", "--region", config["aws_region"]],
+        "Failed to describe ALB security group"
+    )
+    if not json.loads(result.stdout).get("SecurityGroups"):
+        result = run_command(
+            ["aws", "ec2", "create-security-group", "--group-name", alb_sg_name, "--description", "Security group for ALB", "--vpc-id", vpc_id, "--region", config["aws_region"]],
+            "Failed to create ALB security group"
+        )
+        alb_sg_id = json.loads(result.stdout)["GroupId"]
+        run_command(
+            ["aws", "ec2", "authorize-security-group-ingress", "--group-id", alb_sg_id, "--protocol", "tcp", "--port", "80", "--cidr", "0.0.0.0/0", "--region", config["aws_region"]],
+            "Failed to authorize HTTP ingress"
+        )
+        run_command(
+            ["aws", "ec2", "authorize-security-group-ingress", "--group-id", alb_sg_id, "--protocol", "tcp", "--port", "443", "--cidr", "0.0.0.0/0", "--region", config["aws_region"]],
+            "Failed to authorize HTTPS ingress"
+        )
+    else:
+        alb_sg_id = json.loads(result.stdout)["SecurityGroups"][0]["GroupId"]
+    
+    ecs_sg_name = f"{project_name}-ecs-sg"
+    result = run_command(
+        ["aws", "ec2", "describe-security-groups", "--filters", f"Name=vpc-id,Values={vpc_id}", f"Name=group-name,Values={ecs_sg_name}", "--region", config["aws_region"]],
+        "Failed to describe ECS security group"
+    )
+    if not json.loads(result.stdout).get("SecurityGroups"):
+        result = run_command(
+            ["aws", "ec2", "create-security-group", "--group-name", ecs_sg_name, "--description", "Security group for ECS tasks", "--vpc-id", vpc_id, "--region", config["aws_region"]],
+            "Failed to create ECS security group"
+        )
+        ecs_sg_id = json.loads(result.stdout)["GroupId"]
+        run_command(
+            ["aws", "ec2", "authorize-security-group-ingress", "--group-id", ecs_sg_id, "--protocol", "tcp", "--port", "80", "--source-group", alb_sg_id, "--region", config["aws_region"]],
+            "Failed to authorize ECS ingress"
+        )
+    else:
+        ecs_sg_id = json.loads(result.stdout)["SecurityGroups"][0]["GroupId"]
+    
+    state["alb_sg_id"] = alb_sg_id
+    state["ecs_sg_id"] = ecs_sg_id
+    state["last_step"] = 4
+    save_state(project_name, state)
+    print("Security groups configured.")
+    return alb_sg_id, ecs_sg_id
+
+def request_acm_certificate(project_name, state, config):
+    if state["last_step"] >= 5:
+        print("Skipping request_acm_certificate (already completed)")
+        return state["cert_arn"]
+    if not confirm_step("Request ACM Certificate"):
+        sys.exit("User aborted.")
+    
+    domain_name = config["domain_name"]
+    result = run_command(
+        ["aws", "acm", "describe-certificates", "--certificate-statuses", "ISSUED", "--region", config["aws_region"]],
+        "Failed to describe certificates"
+    )
+    certificates = json.loads(result.stdout).get("CertificateSummaryList", [])
+    cert_arn = next((c["CertificateArn"] for c in certificates if c["DomainName"] == domain_name), None)
+    
+    if not cert_arn:
+        result = run_command(
+            ["aws", "acm", "request-certificate", "--domain-name", domain_name, "--validation-method", "DNS", "--region", config["aws_region"]],
+            "Failed to request ACM certificate"
+        )
+        cert_arn = json.loads(result.stdout)["CertificateArn"]
+        
+        time.sleep(10)
+        result = run_command(
+            ["aws", "acm", "describe-certificate", "--certificate-arn", cert_arn, "--region", config["aws_region"]],
+            "Failed to describe certificate"
+        )
+        cert_details = json.loads(result.stdout)["Certificate"]
+        dns_validations = cert_details.get("DomainValidationOptions", [])
+        for validation in dns_validations:
+            if validation["ValidationMethod"] == "DNS" and "ResourceRecord" in validation:
+                record = validation["ResourceRecord"]
+                print(f"Please add this DNS record to validate the certificate for {domain_name}:")
+                print(f"Name: {record['Name']}")
+                print(f"Type: {record['Type']}")
+                print(f"Value: {record['Value']}")
+        print("Press Enter after adding the DNS record...")
+        input()
+        
+        while True:
+            result = run_command(
+                ["aws", "acm", "describe-certificate", "--certificate-arn", cert_arn, "--region", config["aws_region"]],
+                "Failed to check certificate status"
+            )
+            status = json.loads(result.stdout)["Certificate"]["Status"]
+            if status == "ISSUED":
+                break
+            elif status in ["FAILED", "REVOKED", "INACTIVE"]:
+                print("Certificate issuance failed.")
+                sys.exit(1)
+            time.sleep(10)
+    
+    state["cert_arn"] = cert_arn
+    state["last_step"] = 5
+    save_state(project_name, state)
+    print(f"Certificate ARN: {cert_arn}")
+    return cert_arn
+
+def build_and_push_docker(project_name, state, config):
+    if state["last_step"] >= 6:
+        print("Skipping build_and_push_docker (already completed)")
+        return state["fastapi_image"], state["nginx_image"]
+    if not confirm_step("Build and Push Docker Images"):
+        sys.exit("User aborted.")
+    
+    with open("./version.txt", "r") as f:
+        version = f.read().strip()
+    
+    account_id = json.loads(run_command(
+        ["aws", "sts", "get-caller-identity"],
+        "Failed to get AWS account ID"
+    ).stdout)["Account"]
+    region = config["aws_region"]
+    
+    login_password = run_command(
+        ["aws", "ecr", "get-login-password", "--region", region],
+        "Failed to get ECR login password"
+    ).stdout.strip()
+    run_command(
+        ["docker", "login", "--username", "AWS", "--password", login_password, f"{account_id}.dkr.ecr.{region}.amazonaws.com"],
+        "Failed to authenticate Docker to ECR"
+    )
+    
+    fastapi_image = f"{account_id}.dkr.ecr.{region}.amazonaws.com/{project_name}:{version}"
+    run_command(
+        ["docker", "build", "-f", "Dockerfile", "-t", fastapi_image, "."],
+        "Failed to build FastAPI Docker image"
+    )
+    run_command(
+        ["docker", "push", fastapi_image],
+        "Failed to push FastAPI image"
+    )
+    
+    nginx_image = f"{account_id}.dkr.ecr.{region}.amazonaws.com/{project_name}-nginx:{version}"
+    run_command(
+        ["docker", "build", "-f", "Dockerfile", "-t", nginx_image, "."],
+        "Failed to build Nginx Docker image",
+        cwd="./nginx"
+    )
+    run_command(
+        ["docker", "push", nginx_image],
+        "Failed to push Nginx image"
+    )
+    
+    state["fastapi_image"] = fastapi_image
+    state["nginx_image"] = nginx_image
+    state["last_step"] = 6
+    save_state(project_name, state)
+    print("Docker images built and pushed.")
+    return fastapi_image, nginx_image
+
+def create_task_definition(project_name, state, config):
+    if state["last_step"] >= 7:
+        print("Skipping create_task_definition (already completed)")
+        return state["task_def_arn"]
+    if not confirm_step("Create Task Definition"):
+        sys.exit("User aborted.")
+    
+    log_group = f"/ecs/{project_name}-logs"
+    result = run_command(
+        ["aws", "logs", "describe-log-groups", "--log-group-name-prefix", log_group, "--region", config["aws_region"]],
+        "Failed to describe log groups"
+    )
+    if not any(lg["logGroupName"] == log_group for lg in json.loads(result.stdout).get("logGroups", [])):
+        run_command(
+            ["aws", "logs", "create-log-group", "--log-group-name", log_group, "--region", config["aws_region"]],
+            f"Failed to create log group {log_group}"
+        )
+    
+    task_definition = {
+        "family": f"{project_name}-taskdef",
+        "networkMode": "awsvpc",
+        "requiresCompatibilities": ["FARGATE"],
+        "cpu": "512",
+        "memory": "2048",
+        "executionRoleArn": state["execution_role_arn"],
+        "containerDefinitions": [
+            {
+                "name": "fastapi",
+                "image": state["fastapi_image"],
+                "portMappings": [{"containerPort": 8000, "hostPort": 8000, "protocol": "tcp"}],
+                "logConfiguration": {
+                    "logDriver": "awslogs",
+                    "options": {
+                        "awslogs-group": log_group,
+                        "awslogs-region": config["aws_region"],
+                        "awslogs-stream-prefix": "fastapi"
+                    }
+                }
+            },
+            {
+                "name": "nginx",
+                "image": state["nginx_image"],
+                "portMappings": [{"containerPort": 80, "hostPort": 80, "protocol": "tcp"}],
+                "logConfiguration": {
+                    "logDriver": "awslogs",
+                    "options": {
+                        "awslogs-group": log_group,
+                        "awslogs-region": config["aws_region"],
+                        "awslogs-stream-prefix": "nginx"
+                    }
+                }
+            }
+        ]
+    }
+    
+    with open("task_def.json", "w") as f:
+        json.dump(task_definition, f)
+    result = run_command(
+        ["aws", "ecs", "register-task-definition", "--cli-input-json", "file://task_def.json", "--region", config["aws_region"]],
+        "Failed to register task definition"
+    )
+    task_def_arn = json.loads(result.stdout)["taskDefinition"]["taskDefinitionArn"]
+    os.remove("task_def.json")
+    
+    state["task_def_arn"] = task_def_arn
+    state["last_step"] = 7
+    save_state(project_name, state)
+    print("Task definition created.")
+    return task_def_arn
+
+def setup_alb(project_name, state, config):
+    if state["last_step"] >= 8:
+        print("Skipping setup_alb (already completed)")
+        return state["alb_arn"], state["tg_arn"], state["alb_dns"]
+    if not confirm_step("Set Up ALB"):
+        sys.exit("User aborted.")
+    
+    vpc_id = state["vpc_id"]
+    public_subnets = state["public_subnets"]
+    alb_name = f"{project_name}-alb"
+    
+    result = subprocess.run(
+        ["aws", "elbv2", "describe-load-balancers", "--names", alb_name, "--region", config["aws_region"]],
+        capture_output=True, text=True
+    )
+    if result.returncode != 0:
+        run_command(
+            ["aws", "elbv2", "create-load-balancer", "--name", alb_name, "--subnets"] + public_subnets + ["--security-groups", state["alb_sg_id"], "--region", config["aws_region"]],
+            "Failed to create ALB"
+        )
+    alb_arn = json.loads(run_command(
+        ["aws", "elbv2", "describe-load-balancers", "--names", alb_name, "--region", config["aws_region"]],
+        "Failed to describe ALB"
+    ).stdout)["LoadBalancers"][0]["LoadBalancerArn"]
+    alb_dns = json.loads(run_command(
+        ["aws", "elbv2", "describe-load-balancers", "--names", alb_name, "--region", config["aws_region"]],
+        "Failed to get ALB DNS name"
+    ).stdout)["LoadBalancers"][0]["DNSName"]
+    
+    tg_name = f"{project_name}-tg"
+    result = subprocess.run(
+        ["aws", "elbv2", "describe-target-groups", "--names", tg_name, "--region", config["aws_region"]],
+        capture_output=True, text=True
+    )
+    if result.returncode != 0:
+        run_command(
+            ["aws", "elbv2", "create-target-group", "--name", tg_name, "--protocol", "HTTP", "--port", "80", "--vpc-id", vpc_id, "--region", config["aws_region"]],
+            "Failed to create target group"
+        )
+    tg_arn = json.loads(run_command(
+        ["aws", "elbv2", "describe-target-groups", "--names", tg_name, "--region", config["aws_region"]],
+        "Failed to describe target group"
+    ).stdout)["TargetGroups"][0]["TargetGroupArn"]
+    
+    result = run_command(
+        ["aws", "elbv2", "describe-listeners", "--load-balancer-arn", alb_arn, "--region", config["aws_region"]],
+        "Failed to describe listeners"
+    )
+    listeners = json.loads(result.stdout).get("Listeners", [])
+    if not any(l["Port"] == 80 for l in listeners):
+        run_command(
+            ["aws", "elbv2", "create-listener", "--load-balancer-arn", alb_arn, "--protocol", "HTTP", "--port", "80", "--default-actions", "Type=redirect,RedirectConfig={Protocol=HTTPS,Port=443,StatusCode=HTTP_301}", "--region", config["aws_region"]],
+            "Failed to create HTTP listener"
+        )
+    if not any(l["Port"] == 443 for l in listeners):
+        run_command(
+            ["aws", "elbv2", "create-listener", "--load-balancer-arn", alb_arn, "--protocol", "HTTPS", "--port", "443", "--certificates", f"CertificateArn={state['cert_arn']}", "--default-actions", f"Type=forward,TargetGroupArn={tg_arn}", "--region", config["aws_region"]],
+            "Failed to create HTTPS listener"
+        )
+    
+    state["alb_arn"] = alb_arn
+    state["tg_arn"] = tg_arn
+    state["alb_dns"] = alb_dns
+    state["last_step"] = 8
+    save_state(project_name, state)
+    print("ALB configured.")
+    return alb_arn, tg_arn, alb_dns
+
+def deploy_ecs_service(project_name, state, config):
+    if state["last_step"] >= 9:
+        print("Skipping deploy_ecs_service (already completed)")
+        return
+    if not confirm_step("Deploy ECS Service"):
+        sys.exit("User aborted.")
+    
+    cluster_name = f"{project_name}-cluster"
+    result = run_command(
+        ["aws", "ecs", "describe-clusters", "--clusters", cluster_name, "--region", config["aws_region"]],
+        "Failed to describe clusters"
+    )
+    if not json.loads(result.stdout).get("clusters"):
+        run_command(
+            ["aws", "ecs", "create-cluster", "--cluster-name", cluster_name, "--region", config["aws_region"]],
+            "Failed to create ECS cluster"
+        )
+    
+    service_name = f"{project_name}-service"
+    result = run_command(
+        ["aws", "ecs", "describe-services", "--cluster", cluster_name, "--services", service_name, "--region", config["aws_region"]],
+        "Failed to describe services",
+        additional_diagnostics=[["aws", "ecs", "list-tasks", "--cluster", cluster_name, "--service-name", service_name, "--region", config["aws_region"]]]
+    )
+    services = json.loads(result.stdout).get("services", [])
+    if not services or services[0]["status"] == "INACTIVE":
+        run_command(
+            ["aws", "ecs", "create-service", "--cluster", cluster_name, "--service-name", service_name, "--task-definition", state["task_def_arn"], "--desired-count", "1", "--launch-type", "FARGATE", "--network-configuration", f"awsvpcConfiguration={{subnets={json.dumps(state['public_subnets'])},securityGroups=[{state['ecs_sg_id']}],assignPublicIp=ENABLED}}", "--load-balancers", f"targetGroupArn={state['tg_arn']},containerName=nginx,containerPort=80", "--region", config["aws_region"]],
+            "Failed to create ECS service"
+        )
+    else:
+        run_command(
+            ["aws", "ecs", "update-service", "--cluster", cluster_name, "--service", service_name, "--task-definition", state["task_def_arn"], "--region", config["aws_region"]],
+            "Failed to update ECS service"
+        )
+    
+    state["last_step"] = 9
+    save_state(project_name, state)
+    print("ECS service deployed.")
+
+def configure_custom_domain(project_name, state, config):
+    if state["last_step"] >= 10:
+        print("Skipping configure_custom_domain (already completed)")
+        return
+    if not confirm_step("Configure Custom Domain"):
+        sys.exit("User aborted.")
+    
+    domain_name = config["domain_name"]
+    alb_dns = state["alb_dns"]
+    print(f"Please add a CNAME record for {domain_name} pointing to {alb_dns} in your DNS provider.")
+    print("Press Enter after updating the DNS record...")
+    input()
+    
+    while not check_dns_propagation(domain_name, alb_dns):
+        print("DNS propagation not complete. Waiting 30 seconds before retrying...")
+        time.sleep(30)
+    print("DNS propagation confirmed.")
+    
+    state["last_step"] = 10
+    save_state(project_name, state)
+    print("Custom domain configured.")
+
+def test_endpoints(project_name, state, config):
+    if state["last_step"] >= 11:
+        print("Skipping test_endpoints (already completed)")
+        return
+    if not confirm_step("Test Endpoints"):
+        sys.exit("User aborted.")
+    
+    domain = config["domain_name"]
+    time.sleep(30)  # Wait for service to stabilize
+    
+    response = requests.get(f"https://{domain}/health", verify=False)
+    if response.status_code != 200:
+        with open("error_context.md", "w") as f:
+            f.write("Health endpoint test failed:\n")
+            f.write(f"Status Code: {response.status_code}\n")
+            f.write(f"Response: {response.text}\n")
+        sys.exit(1)
+    print("Health endpoint test passed.")
+    
+    payload = {
+        "urls": ["https://example.com"],
+        "browser_config": {"headless": True},
+        "crawler_config": {"stream": False}
+    }
+    response = requests.post(f"https://{domain}/crawl", json=payload, verify=False)
+    if response.status_code != 200:
+        with open("error_context.md", "w") as f:
+            f.write("Crawl endpoint test failed:\n")
+            f.write(f"Status Code: {response.status_code}\n")
+            f.write(f"Response: {response.text}\n")
+        sys.exit(1)
+    print("Crawl endpoint test passed.")
+    
+    state["last_step"] = 11
+    save_state(project_name, state)
+    print("Endpoints tested successfully.")
+
+# Main Deployment Function
+def deploy(project_name, force=False):
+    config_file = f"{project_name}-config.yml"
+    if not os.path.exists(config_file):
+        print(f"Configuration file {config_file} not found. Run 'init' first.")
+        sys.exit(1)
+    
+    with open(config_file, "r") as f:
+        config = yaml.safe_load(f)
+    
+    state = load_state(project_name)
+    if force:
+        state = {"last_step": -1}
+    
+    last_step = state.get("last_step", -1)
+    
+    for step_idx, step_name in enumerate(STEPS):
+        if step_idx <= last_step:
+            print(f"Skipping {step_name} (already completed)")
+            continue
+        print(f"Executing step: {step_name}")
+        func = globals()[step_name]
+        if step_name == "fetch_or_create_vpc_and_subnets":
+            vpc_id, public_subnets = func(project_name, state, config)
+        elif step_name == "create_security_groups":
+            alb_sg_id, ecs_sg_id = func(project_name, state, config)
+        elif step_name == "request_acm_certificate":
+            cert_arn = func(project_name, state, config)
+        elif step_name == "build_and_push_docker":
+            fastapi_image, nginx_image = func(project_name, state, config)
+        elif step_name == "create_task_definition":
+            task_def_arn = func(project_name, state, config)
+        elif step_name == "setup_alb":
+            alb_arn, tg_arn, alb_dns = func(project_name, state, config)
+        elif step_name == "deploy_ecs_service":
+            func(project_name, state, config)
+        elif step_name == "configure_custom_domain":
+            func(project_name, state, config)
+        elif step_name == "test_endpoints":
+            func(project_name, state, config)
+        else:
+            func(project_name, state, config)
+
+# Init Command
+def init(project_name, domain_name, aws_region):
+    config = {
+        "project_name": project_name,
+        "domain_name": domain_name,
+        "aws_region": aws_region
+    }
+    config_file = f"{project_name}-config.yml"
+    with open(config_file, "w") as f:
+        yaml.dump(config, f)
+    print(f"Configuration file {config_file} created.")
+
+# Argument Parser
+parser = argparse.ArgumentParser(description="Crawl4AI Deployment Script")
+subparsers = parser.add_subparsers(dest="command")
+
+# Init Parser
+init_parser = subparsers.add_parser("init", help="Initialize configuration")
+init_parser.add_argument("--project", required=True, help="Project name")
+init_parser.add_argument("--domain", required=True, help="Domain name")
+init_parser.add_argument("--region", required=True, help="AWS region")
+
+# Deploy Parser
+deploy_parser = subparsers.add_parser("deploy", help="Deploy the project")
+deploy_parser.add_argument("--project", required=True, help="Project name")
+deploy_parser.add_argument("--force", action="store_true", help="Force redeployment from start")
+
+args = parser.parse_args()
+
+if args.command == "init":
+    init(args.project, args.domain, args.region)
+elif args.command == "deploy":
+    deploy(args.project, args.force)
+else:
+    parser.print_help()

deploy/aws/docker/.dockerignore

@@ -0,0 +1,31 @@
+# .dockerignore
+*
+
+# Allow specific files and directories when using local installation
+!crawl4ai/
+!docs/
+!deploy/docker/
+!setup.py
+!pyproject.toml
+!README.md
+!LICENSE
+!MANIFEST.in
+!setup.cfg
+!mkdocs.yml
+
+.git/
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.DS_Store
+.env
+.venv
+venv/
+tests/
+coverage.xml
+*.log
+*.swp
+*.egg-info/
+dist/
+build/

deploy/aws/docker/.llm.env.example

@@ -0,0 +1,8 @@
+# LLM Provider Keys
+OPENAI_API_KEY=your_openai_key_here
+DEEPSEEK_API_KEY=your_deepseek_key_here
+ANTHROPIC_API_KEY=your_anthropic_key_here
+GROQ_API_KEY=your_groq_key_here
+TOGETHER_API_KEY=your_together_key_here
+MISTRAL_API_KEY=your_mistral_key_here
+GEMINI_API_TOKEN=your_gemini_key_here

deploy/aws/docker/README.md

@@ -0,0 +1,847 @@
+# Crawl4AI Docker Guide 🐳
+
+## Table of Contents
+- [Prerequisites](#prerequisites)
+- [Installation](#installation)
+  - [Local Build](#local-build)
+  - [Docker Hub](#docker-hub)
+- [Dockerfile Parameters](#dockerfile-parameters)
+- [Using the API](#using-the-api)
+  - [Understanding Request Schema](#understanding-request-schema)
+  - [REST API Examples](#rest-api-examples)
+  - [Python SDK](#python-sdk)
+- [Metrics & Monitoring](#metrics--monitoring)
+- [Deployment Scenarios](#deployment-scenarios)
+- [Complete Examples](#complete-examples)
+- [Getting Help](#getting-help)
+
+## Prerequisites
+
+Before we dive in, make sure you have:
+- Docker installed and running (version 20.10.0 or higher)
+- At least 4GB of RAM available for the container
+- Python 3.10+ (if using the Python SDK)
+- Node.js 16+ (if using the Node.js examples)
+
+> 💡 **Pro tip**: Run `docker info` to check your Docker installation and available resources.
+
+## Installation
+
+### Local Build
+
+Let's get your local environment set up step by step!
+
+#### 1. Building the Image
+
+First, clone the repository and build the Docker image:
+
+```bash
+# Clone the repository
+git clone https://github.com/unclecode/crawl4ai.git
+cd crawl4ai/deploy
+
+# Build the Docker image
+docker build --platform=linux/amd64 --no-cache -t crawl4ai .
+
+# Or build for arm64
+docker build --platform=linux/arm64 --no-cache -t crawl4ai .
+```
+
+#### 2. Environment Setup
+
+If you plan to use LLMs (Language Models), you'll need to set up your API keys. Create a `.llm.env` file:
+
+```env
+# OpenAI
+OPENAI_API_KEY=sk-your-key
+
+# Anthropic
+ANTHROPIC_API_KEY=your-anthropic-key
+
+# DeepSeek
+DEEPSEEK_API_KEY=your-deepseek-key
+
+# Check out https://docs.litellm.ai/docs/providers for more providers!
+```
+
+> 🔑 **Note**: Keep your API keys secure! Never commit them to version control.
+
+#### 3. Running the Container
+
+You have several options for running the container:
+
+Basic run (no LLM support):
+```bash
+docker run -d -p 8000:8000 --name crawl4ai crawl4ai
+```
+
+With LLM support:
+```bash
+docker run -d -p 8000:8000 \
+  --env-file .llm.env \
+  --name crawl4ai \
+  crawl4ai
+```
+
+Using host environment variables (Not a good practice, but works for local testing):
+```bash
+docker run -d -p 8000:8000 \
+  --env-file .llm.env \
+  --env "$(env)" \
+  --name crawl4ai \
+  crawl4ai
+```
+
+#### Multi-Platform Build
+For distributing your image across different architectures, use `buildx`:
+
+```bash
+# Set up buildx builder
+docker buildx create --use
+
+# Build for multiple platforms
+docker buildx build \
+  --platform linux/amd64,linux/arm64 \
+  -t crawl4ai \
+  --push \
+  .
+```
+
+> 💡 **Note**: Multi-platform builds require Docker Buildx and need to be pushed to a registry.
+
+#### Development Build
+For development, you might want to enable all features:
+
+```bash
+docker build -t crawl4ai
+  --build-arg INSTALL_TYPE=all \
+  --build-arg PYTHON_VERSION=3.10 \
+  --build-arg ENABLE_GPU=true \
+  .
+```
+
+#### GPU-Enabled Build
+If you plan to use GPU acceleration:
+
+```bash
+docker build -t crawl4ai
+  --build-arg ENABLE_GPU=true \
+  deploy/docker/
+```
+
+### Build Arguments Explained
+
+| Argument | Description | Default | Options |
+|----------|-------------|---------|----------|
+| PYTHON_VERSION | Python version | 3.10 | 3.8, 3.9, 3.10 |
+| INSTALL_TYPE | Feature set | default | default, all, torch, transformer |
+| ENABLE_GPU | GPU support | false | true, false |
+| APP_HOME | Install path | /app | any valid path |
+
+### Build Best Practices
+
+1. **Choose the Right Install Type**
+   - `default`: Basic installation, smallest image, to be honest, I use this most of the time.
+   - `all`: Full features, larger image (include transformer, and nltk, make sure you really need them)
+
+2. **Platform Considerations**
+   - Let Docker auto-detect platform unless you need cross-compilation
+   - Use --platform for specific architecture requirements
+   - Consider buildx for multi-architecture distribution
+
+3. **Performance Optimization**
+   - The image automatically includes platform-specific optimizations
+   - AMD64 gets OpenMP optimizations
+   - ARM64 gets OpenBLAS optimizations
+
+### Docker Hub
+
+> 🚧 Coming soon! The image will be available at `crawl4ai`. Stay tuned!
+
+## Using the API
+
+In the following sections, we discuss two ways to communicate with the Docker server. One option is to use the client SDK that I developed for Python, and I will soon develop one for Node.js. I highly recommend this approach to avoid mistakes. Alternatively, you can take a more technical route by using the JSON structure and passing it to all the URLs, which I will explain in detail.
+
+### Python SDK
+
+The SDK makes things easier! Here's how to use it:
+
+```python
+from crawl4ai.docker_client import Crawl4aiDockerClient
+from crawl4ai import BrowserConfig, CrawlerRunConfig
+
+async def main():
+    async with Crawl4aiDockerClient(base_url="http://localhost:8000", verbose=True) as client:
+      # If JWT is enabled, you can authenticate like this: (more on this later)
+        # await client.authenticate("test@example.com")
+        
+        # Non-streaming crawl
+        results = await client.crawl(
+            ["https://example.com", "https://python.org"],
+            browser_config=BrowserConfig(headless=True),
+            crawler_config=CrawlerRunConfig()
+        )
+        print(f"Non-streaming results: {results}")
+        
+        # Streaming crawl
+        crawler_config = CrawlerRunConfig(stream=True)
+        async for result in await client.crawl(
+            ["https://example.com", "https://python.org"],
+            browser_config=BrowserConfig(headless=True),
+            crawler_config=crawler_config
+        ):
+            print(f"Streamed result: {result}")
+        
+        # Get schema
+        schema = await client.get_schema()
+        print(f"Schema: {schema}")
+
+if __name__ == "__main__":
+    asyncio.run(main())
+```
+
+`Crawl4aiDockerClient` is an async context manager that handles the connection for you. You can pass in optional parameters for more control:
+
+- `base_url` (str): Base URL of the Crawl4AI Docker server
+- `timeout` (float): Default timeout for requests in seconds
+- `verify_ssl` (bool): Whether to verify SSL certificates
+- `verbose` (bool): Whether to show logging output
+- `log_file` (str, optional): Path to log file if file logging is desired
+
+This client SDK generates a properly structured JSON request for the server's HTTP API.
+
+## Second Approach: Direct API Calls
+
+This is super important! The API expects a specific structure that matches our Python classes. Let me show you how it works.
+
+### Understanding Configuration Structure
+
+Let's dive deep into how configurations work in Crawl4AI. Every configuration object follows a consistent pattern of `type` and `params`. This structure enables complex, nested configurations while maintaining clarity.
+
+#### The Basic Pattern
+
+Try this in Python to understand the structure:
+```python
+from crawl4ai import BrowserConfig
+
+# Create a config and see its structure
+config = BrowserConfig(headless=True)
+print(config.dump())
+```
+
+This outputs:
+```json
+{
+    "type": "BrowserConfig",
+    "params": {
+        "headless": true
+    }
+}
+```
+
+#### Simple vs Complex Values
+
+The structure follows these rules:
+- Simple values (strings, numbers, booleans, lists) are passed directly
+- Complex values (classes, dictionaries) use the type-params pattern
+
+For example, with dictionaries:
+```json
+{
+    "browser_config": {
+        "type": "BrowserConfig",
+        "params": {
+            "headless": true,           // Simple boolean - direct value
+            "viewport": {               // Complex dictionary - needs type-params
+                "type": "dict",
+                "value": {
+                    "width": 1200,
+                    "height": 800
+                }
+            }
+        }
+    }
+}
+```
+
+#### Strategy Pattern and Nesting
+
+Strategies (like chunking or content filtering) demonstrate why we need this structure. Consider this chunking configuration:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "chunking_strategy": {
+                "type": "RegexChunking",      // Strategy implementation
+                "params": {
+                    "patterns": ["\n\n", "\\.\\s+"]
+                }
+            }
+        }
+    }
+}
+```
+
+Here, `chunking_strategy` accepts any chunking implementation. The `type` field tells the system which strategy to use, and `params` configures that specific strategy.
+
+#### Complex Nested Example
+
+Let's look at a more complex example with content filtering:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "markdown_generator": {
+                "type": "DefaultMarkdownGenerator",
+                "params": {
+                    "content_filter": {
+                        "type": "PruningContentFilter",
+                        "params": {
+                            "threshold": 0.48,
+                            "threshold_type": "fixed"
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+This shows how deeply configurations can nest while maintaining a consistent structure.
+
+#### Quick Grammar Overview
+```
+config := {
+    "type": string,
+    "params": {
+        key: simple_value | complex_value
+    }
+}
+
+simple_value := string | number | boolean | [simple_value]
+complex_value := config | dict_value
+
+dict_value := {
+    "type": "dict",
+    "value": object
+}
+```
+
+#### Important Rules 🚨
+
+- Always use the type-params pattern for class instances
+- Use direct values for primitives (numbers, strings, booleans)
+- Wrap dictionaries with {"type": "dict", "value": {...}}
+- Arrays/lists are passed directly without type-params
+- All parameters are optional unless specifically required
+
+#### Pro Tip 💡
+
+The easiest way to get the correct structure is to:
+1. Create configuration objects in Python
+2. Use the `dump()` method to see their JSON representation
+3. Use that JSON in your API calls
+
+Example:
+```python
+from crawl4ai import CrawlerRunConfig, PruningContentFilter
+
+config = CrawlerRunConfig(
+    content_filter=PruningContentFilter(threshold=0.48)
+)
+print(config.dump())  # Use this JSON in your API calls
+```
+
+
+#### More Examples
+
+**Advanced Crawler Configuration**
+
+```json
+{
+    "urls": ["https://example.com"],
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "cache_mode": "bypass",
+            "markdown_generator": {
+                "type": "DefaultMarkdownGenerator",
+                "params": {
+                    "content_filter": {
+                        "type": "PruningContentFilter",
+                        "params": {
+                            "threshold": 0.48,
+                            "threshold_type": "fixed",
+                            "min_word_threshold": 0
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+**Extraction Strategy**:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "extraction_strategy": {
+                "type": "JsonCssExtractionStrategy",
+                "params": {
+                    "schema": {
+                        "baseSelector": "article.post",
+                        "fields": [
+                            {"name": "title", "selector": "h1", "type": "text"},
+                            {"name": "content", "selector": ".content", "type": "html"}
+                        ]
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+**LLM Extraction Strategy**
+
+```json
+{
+  "crawler_config": {
+    "type": "CrawlerRunConfig",
+    "params": {
+      "extraction_strategy": {
+        "type": "LLMExtractionStrategy",
+        "params": {
+          "instruction": "Extract article title, author, publication date and main content",
+          "provider": "openai/gpt-4",
+          "api_token": "your-api-token",
+          "schema": {
+            "type": "dict",
+            "value": {
+              "title": "Article Schema",
+              "type": "object",
+              "properties": {
+                "title": {
+                  "type": "string",
+                  "description": "The article's headline"
+                },
+                "author": {
+                  "type": "string",
+                  "description": "The author's name"
+                },
+                "published_date": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "Publication date and time"
+                },
+                "content": {
+                  "type": "string",
+                  "description": "The main article content"
+                }
+              },
+              "required": ["title", "content"]
+            }
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+**Deep Crawler Example**
+
+```json
+{
+  "crawler_config": {
+    "type": "CrawlerRunConfig",
+    "params": {
+      "deep_crawl_strategy": {
+        "type": "BFSDeepCrawlStrategy",
+        "params": {
+          "max_depth": 3,
+          "max_pages": 100,
+          "filter_chain": {
+            "type": "FastFilterChain",
+            "params": {
+              "filters": [
+                {
+                  "type": "FastContentTypeFilter",
+                  "params": {
+                    "allowed_types": ["text/html", "application/xhtml+xml"]
+                  }
+                },
+                {
+                  "type": "FastDomainFilter",
+                  "params": {
+                    "allowed_domains": ["blog.*", "docs.*"],
+                    "blocked_domains": ["ads.*", "analytics.*"]
+                  }
+                },
+                {
+                  "type": "FastURLPatternFilter",
+                  "params": {
+                    "allowed_patterns": ["^/blog/", "^/docs/"],
+                    "blocked_patterns": [".*/ads/", ".*/sponsored/"]
+                  }
+                }
+              ]
+            }
+          },
+          "url_scorer": {
+            "type": "FastCompositeScorer",
+            "params": {
+              "scorers": [
+                {
+                  "type": "FastKeywordRelevanceScorer",
+                  "params": {
+                    "keywords": ["tutorial", "guide", "documentation"],
+                    "weight": 1.0
+                  }
+                },
+                {
+                  "type": "FastPathDepthScorer",
+                  "params": {
+                    "weight": 0.5,
+                    "preferred_depth": 2
+                  }
+                },
+                {
+                  "type": "FastFreshnessScorer",
+                  "params": {
+                    "weight": 0.8,
+                    "max_age_days": 365
+                  }
+                }
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+### REST API Examples
+
+Let's look at some practical examples:
+
+#### Simple Crawl
+
+```python
+import requests
+
+crawl_payload = {
+    "urls": ["https://example.com"],
+    "browser_config": {"headless": True},
+    "crawler_config": {"stream": False}
+}
+response = requests.post(
+    "http://localhost:8000/crawl",
+    # headers={"Authorization": f"Bearer {token}"},  # If JWT is enabled, more on this later
+    json=crawl_payload
+)
+print(response.json())  # Print the response for debugging
+```
+
+#### Streaming Results
+
+```python
+async def test_stream_crawl(session, token: str):
+    """Test the /crawl/stream endpoint with multiple URLs."""
+    url = "http://localhost:8000/crawl/stream"
+    payload = {
+        "urls": [
+            "https://example.com",
+            "https://example.com/page1",  
+            "https://example.com/page2",  
+            "https://example.com/page3",  
+        ],
+        "browser_config": {"headless": True, "viewport": {"width": 1200}},
+        "crawler_config": {"stream": True, "cache_mode": "aggressive"}
+    }
+
+    # headers = {"Authorization": f"Bearer {token}"} # If JWT is enabled, more on this later
+    
+    try:
+        async with session.post(url, json=payload, headers=headers) as response:
+            status = response.status
+            print(f"Status: {status} (Expected: 200)")
+            assert status == 200, f"Expected 200, got {status}"
+            
+            # Read streaming response line-by-line (NDJSON)
+            async for line in response.content:
+                if line:
+                    data = json.loads(line.decode('utf-8').strip())
+                    print(f"Streamed Result: {json.dumps(data, indent=2)}")
+    except Exception as e:
+        print(f"Error in streaming crawl test: {str(e)}")
+```
+
+## Metrics & Monitoring
+
+Keep an eye on your crawler with these endpoints:
+
+- `/health` - Quick health check
+- `/metrics` - Detailed Prometheus metrics
+- `/schema` - Full API schema
+
+Example health check:
+```bash
+curl http://localhost:8000/health
+```
+
+## Deployment Scenarios
+
+> 🚧 Coming soon! We'll cover:
+> - Kubernetes deployment
+> - Cloud provider setups (AWS, GCP, Azure)
+> - High-availability configurations
+> - Load balancing strategies
+
+## Complete Examples
+
+Check out the `examples` folder in our repository for full working examples! Here are two to get you started:
+[Using Client SDK](https://github.com/unclecode/crawl4ai/blob/main/docs/examples/docker_python_sdk_example.py)
+[Using REST API](https://github.com/unclecode/crawl4ai/blob/main/docs/examples/docker_python_rest_api_example.py)
+
+## Server Configuration
+
+The server's behavior can be customized through the `config.yml` file. Let's explore how to configure your Crawl4AI server for optimal performance and security.
+
+### Understanding config.yml
+
+The configuration file is located at `deploy/docker/config.yml`. You can either modify this file before building the image or mount a custom configuration when running the container.
+
+Here's a detailed breakdown of the configuration options:
+
+```yaml
+# Application Configuration
+app:
+  title: "Crawl4AI API"           # Server title in OpenAPI docs
+  version: "1.0.0"               # API version
+  host: "0.0.0.0"               # Listen on all interfaces
+  port: 8000                    # Server port
+  reload: True                  # Enable hot reloading (development only)
+  timeout_keep_alive: 300       # Keep-alive timeout in seconds
+
+# Rate Limiting Configuration
+rate_limiting:
+  enabled: True                 # Enable/disable rate limiting
+  default_limit: "100/minute"   # Rate limit format: "number/timeunit"
+  trusted_proxies: []          # List of trusted proxy IPs
+  storage_uri: "memory://"     # Use "redis://localhost:6379" for production
+
+# Security Configuration
+security:
+  enabled: false               # Master toggle for security features
+  jwt_enabled: true            # Enable JWT authentication
+  https_redirect: True         # Force HTTPS
+  trusted_hosts: ["*"]         # Allowed hosts (use specific domains in production)
+  headers:                     # Security headers
+    x_content_type_options: "nosniff"
+    x_frame_options: "DENY"
+    content_security_policy: "default-src 'self'"
+    strict_transport_security: "max-age=63072000; includeSubDomains"
+
+# Crawler Configuration
+crawler:
+  memory_threshold_percent: 95.0  # Memory usage threshold
+  rate_limiter:
+    base_delay: [1.0, 2.0]      # Min and max delay between requests
+  timeouts:
+    stream_init: 30.0           # Stream initialization timeout
+    batch_process: 300.0        # Batch processing timeout
+
+# Logging Configuration
+logging:
+  level: "INFO"                 # Log level (DEBUG, INFO, WARNING, ERROR)
+  format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+# Observability Configuration
+observability:
+  prometheus:
+    enabled: True              # Enable Prometheus metrics
+    endpoint: "/metrics"       # Metrics endpoint
+  health_check:
+    endpoint: "/health"        # Health check endpoint
+```
+
+### JWT Authentication
+
+When `security.jwt_enabled` is set to `true` in your config.yml, all endpoints require JWT authentication via bearer tokens. Here's how it works:
+
+#### Getting a Token
+```python
+POST /token
+Content-Type: application/json
+
+{
+    "email": "user@example.com"
+}
+```
+
+The endpoint returns:
+```json
+{
+    "email": "user@example.com",
+    "access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOi...",
+    "token_type": "bearer"
+}
+```
+
+#### Using the Token
+Add the token to your requests:
+```bash
+curl -H "Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGci..." http://localhost:8000/crawl
+```
+
+Using the Python SDK:
+```python
+from crawl4ai.docker_client import Crawl4aiDockerClient
+
+async with Crawl4aiDockerClient() as client:
+    # Authenticate first
+    await client.authenticate("user@example.com")
+    
+    # Now all requests will include the token automatically
+    result = await client.crawl(urls=["https://example.com"])
+```
+
+#### Production Considerations 💡
+The default implementation uses a simple email verification. For production use, consider:
+- Email verification via OTP/magic links
+- OAuth2 integration
+- Rate limiting token generation
+- Token expiration and refresh mechanisms
+- IP-based restrictions
+
+### Configuration Tips and Best Practices
+
+1. **Production Settings** 🏭
+
+   ```yaml
+   app:
+     reload: False              # Disable reload in production
+     timeout_keep_alive: 120    # Lower timeout for better resource management
+   
+   rate_limiting:
+     storage_uri: "redis://redis:6379"  # Use Redis for distributed rate limiting
+     default_limit: "50/minute"         # More conservative rate limit
+   
+   security:
+     enabled: true                      # Enable all security features
+     trusted_hosts: ["your-domain.com"] # Restrict to your domain
+   ```
+
+2. **Development Settings** 🛠️
+
+   ```yaml
+   app:
+     reload: True               # Enable hot reloading
+     timeout_keep_alive: 300    # Longer timeout for debugging
+   
+   logging:
+     level: "DEBUG"            # More verbose logging
+   ```
+
+3. **High-Traffic Settings** 🚦
+
+   ```yaml
+   crawler:
+     memory_threshold_percent: 85.0  # More conservative memory limit
+     rate_limiter:
+       base_delay: [2.0, 4.0]       # More aggressive rate limiting
+   ```
+
+### Customizing Your Configuration
+
+#### Method 1: Pre-build Configuration
+
+```bash
+# Copy and modify config before building
+cd crawl4ai/deploy
+vim custom-config.yml # Or use any editor
+
+# Build with custom config
+docker build --platform=linux/amd64 --no-cache -t crawl4ai:latest .
+```
+
+#### Method 2: Build-time Configuration
+
+Use a custom config during build:
+
+```bash
+# Build with custom config
+docker build --platform=linux/amd64 --no-cache \
+  --build-arg CONFIG_PATH=/path/to/custom-config.yml \ 
+  -t crawl4ai:latest .
+```
+
+#### Method 3: Runtime Configuration
+```bash
+# Mount custom config at runtime
+docker run -d -p 8000:8000 \
+  -v $(pwd)/custom-config.yml:/app/config.yml \
+  crawl4ai-server:prod
+```
+
+> 💡 Note: When using Method 2, `/path/to/custom-config.yml` is relative to deploy directory.
+> 💡 Note: When using Method 3, ensure your custom config file has all required fields as the container will use this instead of the built-in config.
+
+### Configuration Recommendations
+
+1. **Security First** 🔒
+   - Always enable security in production
+   - Use specific trusted_hosts instead of wildcards
+   - Set up proper rate limiting to protect your server
+   - Consider your environment before enabling HTTPS redirect
+
+2. **Resource Management** 💻
+   - Adjust memory_threshold_percent based on available RAM
+   - Set timeouts according to your content size and network conditions
+   - Use Redis for rate limiting in multi-container setups
+
+3. **Monitoring** 📊
+   - Enable Prometheus if you need metrics
+   - Set DEBUG logging in development, INFO in production
+   - Regular health check monitoring is crucial
+
+4. **Performance Tuning** ⚡
+   - Start with conservative rate limiter delays
+   - Increase batch_process timeout for large content
+   - Adjust stream_init timeout based on initial response times
+
+## Getting Help
+
+We're here to help you succeed with Crawl4AI! Here's how to get support:
+
+- 📖 Check our [full documentation](https://docs.crawl4ai.com)
+- 🐛 Found a bug? [Open an issue](https://github.com/unclecode/crawl4ai/issues)
+- 💬 Join our [Discord community](https://discord.gg/crawl4ai)
+- ⭐ Star us on GitHub to show support!
+
+## Summary
+
+In this guide, we've covered everything you need to get started with Crawl4AI's Docker deployment:
+- Building and running the Docker container
+- Configuring the environment
+- Making API requests with proper typing
+- Using the Python SDK
+- Monitoring your deployment
+
+Remember, the examples in the `examples` folder are your friends - they show real-world usage patterns that you can adapt for your needs.
+
+Keep exploring, and don't hesitate to reach out if you need help! We're building something amazing together. 🚀
+
+Happy crawling! 🕷️

deploy/aws/docker/api.py

@@ -0,0 +1,442 @@
+import os
+import json
+import asyncio
+from typing import List, Tuple
+
+import logging
+from typing import Optional, AsyncGenerator
+from urllib.parse import unquote
+from fastapi import HTTPException, Request, status
+from fastapi.background import BackgroundTasks
+from fastapi.responses import JSONResponse
+from redis import asyncio as aioredis
+
+from crawl4ai import (
+    AsyncWebCrawler,
+    CrawlerRunConfig,
+    LLMExtractionStrategy,
+    CacheMode,
+    BrowserConfig,
+    MemoryAdaptiveDispatcher,
+    RateLimiter
+)
+from crawl4ai.utils import perform_completion_with_backoff
+from crawl4ai.content_filter_strategy import (
+    PruningContentFilter,
+    BM25ContentFilter,
+    LLMContentFilter
+)
+from crawl4ai.markdown_generation_strategy import DefaultMarkdownGenerator
+from crawl4ai.content_scraping_strategy import LXMLWebScrapingStrategy
+
+from utils import (
+    TaskStatus,
+    FilterType,
+    get_base_url,
+    is_task_id,
+    should_cleanup_task,
+    decode_redis_hash
+)
+
+logger = logging.getLogger(__name__)
+
+async def handle_llm_qa(
+    url: str,
+    query: str,
+    config: dict
+) -> str:
+    """Process QA using LLM with crawled content as context."""
+    try:
+        # Extract base URL by finding last '?q=' occurrence
+        last_q_index = url.rfind('?q=')
+        if last_q_index != -1:
+            url = url[:last_q_index]
+
+        # Get markdown content
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(url)
+            if not result.success:
+                raise HTTPException(
+                    status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                    detail=result.error_message
+                )
+            content = result.markdown_v2.fit_markdown
+
+        # Create prompt and get LLM response
+        prompt = f"""Use the following content as context to answer the question.
+    Content:
+    {content}
+
+    Question: {query}
+
+    Answer:"""
+
+        response = perform_completion_with_backoff(
+            provider=config["llm"]["provider"],
+            prompt_with_variables=prompt,
+            api_token=os.environ.get(config["llm"].get("api_key_env", ""))
+        )
+
+        return response.choices[0].message.content
+    except Exception as e:
+        logger.error(f"QA processing error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def process_llm_extraction(
+    redis: aioredis.Redis,
+    config: dict,
+    task_id: str,
+    url: str,
+    instruction: str,
+    schema: Optional[str] = None,
+    cache: str = "0"
+) -> None:
+    """Process LLM extraction in background."""
+    try:
+        # If config['llm'] has api_key then ignore the api_key_env
+        api_key = ""
+        if "api_key" in config["llm"]:
+            api_key = config["llm"]["api_key"]
+        else:
+            api_key = os.environ.get(config["llm"].get("api_key_env", None), "")
+        llm_strategy = LLMExtractionStrategy(
+            provider=config["llm"]["provider"],
+            api_token=api_key,
+            instruction=instruction,
+            schema=json.loads(schema) if schema else None,
+        )
+
+        cache_mode = CacheMode.ENABLED if cache == "1" else CacheMode.WRITE_ONLY
+
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(
+                url=url,
+                config=CrawlerRunConfig(
+                    extraction_strategy=llm_strategy,
+                    scraping_strategy=LXMLWebScrapingStrategy(),
+                    cache_mode=cache_mode
+                )
+            )
+
+        if not result.success:
+            await redis.hset(f"task:{task_id}", mapping={
+                "status": TaskStatus.FAILED,
+                "error": result.error_message
+            })
+            return
+
+        try:
+            content = json.loads(result.extracted_content)
+        except json.JSONDecodeError:
+            content = result.extracted_content
+        await redis.hset(f"task:{task_id}", mapping={
+            "status": TaskStatus.COMPLETED,
+            "result": json.dumps(content)
+        })
+
+    except Exception as e:
+        logger.error(f"LLM extraction error: {str(e)}", exc_info=True)
+        await redis.hset(f"task:{task_id}", mapping={
+            "status": TaskStatus.FAILED,
+            "error": str(e)
+        })
+
+async def handle_markdown_request(
+    url: str,
+    filter_type: FilterType,
+    query: Optional[str] = None,
+    cache: str = "0",
+    config: Optional[dict] = None
+) -> str:
+    """Handle markdown generation requests."""
+    try:
+        decoded_url = unquote(url)
+        if not decoded_url.startswith(('http://', 'https://')):
+            decoded_url = 'https://' + decoded_url
+
+        if filter_type == FilterType.RAW:
+            md_generator = DefaultMarkdownGenerator()
+        else:
+            content_filter = {
+                FilterType.FIT: PruningContentFilter(),
+                FilterType.BM25: BM25ContentFilter(user_query=query or ""),
+                FilterType.LLM: LLMContentFilter(
+                    provider=config["llm"]["provider"],
+                    api_token=os.environ.get(config["llm"].get("api_key_env", None), ""),
+                    instruction=query or "Extract main content"
+                )
+            }[filter_type]
+            md_generator = DefaultMarkdownGenerator(content_filter=content_filter)
+
+        cache_mode = CacheMode.ENABLED if cache == "1" else CacheMode.WRITE_ONLY
+
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(
+                url=decoded_url,
+                config=CrawlerRunConfig(
+                    markdown_generator=md_generator,
+                    scraping_strategy=LXMLWebScrapingStrategy(),
+                    cache_mode=cache_mode
+                )
+            )
+            
+            if not result.success:
+                raise HTTPException(
+                    status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                    detail=result.error_message
+                )
+
+            return (result.markdown_v2.raw_markdown 
+                   if filter_type == FilterType.RAW 
+                   else result.markdown_v2.fit_markdown)
+
+    except Exception as e:
+        logger.error(f"Markdown error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def handle_llm_request(
+    redis: aioredis.Redis,
+    background_tasks: BackgroundTasks,
+    request: Request,
+    input_path: str,
+    query: Optional[str] = None,
+    schema: Optional[str] = None,
+    cache: str = "0",
+    config: Optional[dict] = None
+) -> JSONResponse:
+    """Handle LLM extraction requests."""
+    base_url = get_base_url(request)
+    
+    try:
+        if is_task_id(input_path):
+            return await handle_task_status(
+                redis, input_path, base_url
+            )
+
+        if not query:
+            return JSONResponse({
+                "message": "Please provide an instruction",
+                "_links": {
+                    "example": {
+                        "href": f"{base_url}/llm/{input_path}?q=Extract+main+content",
+                        "title": "Try this example"
+                    }
+                }
+            })
+
+        return await create_new_task(
+            redis,
+            background_tasks,
+            input_path,
+            query,
+            schema,
+            cache,
+            base_url,
+            config
+        )
+
+    except Exception as e:
+        logger.error(f"LLM endpoint error: {str(e)}", exc_info=True)
+        return JSONResponse({
+            "error": str(e),
+            "_links": {
+                "retry": {"href": str(request.url)}
+            }
+        }, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+async def handle_task_status(
+    redis: aioredis.Redis,
+    task_id: str,
+    base_url: str
+) -> JSONResponse:
+    """Handle task status check requests."""
+    task = await redis.hgetall(f"task:{task_id}")
+    if not task:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Task not found"
+        )
+
+    task = decode_redis_hash(task)
+    response = create_task_response(task, task_id, base_url)
+
+    if task["status"] in [TaskStatus.COMPLETED, TaskStatus.FAILED]:
+        if should_cleanup_task(task["created_at"]):
+            await redis.delete(f"task:{task_id}")
+
+    return JSONResponse(response)
+
+async def create_new_task(
+    redis: aioredis.Redis,
+    background_tasks: BackgroundTasks,
+    input_path: str,
+    query: str,
+    schema: Optional[str],
+    cache: str,
+    base_url: str,
+    config: dict
+) -> JSONResponse:
+    """Create and initialize a new task."""
+    decoded_url = unquote(input_path)
+    if not decoded_url.startswith(('http://', 'https://')):
+        decoded_url = 'https://' + decoded_url
+
+    from datetime import datetime
+    task_id = f"llm_{int(datetime.now().timestamp())}_{id(background_tasks)}"
+    
+    await redis.hset(f"task:{task_id}", mapping={
+        "status": TaskStatus.PROCESSING,
+        "created_at": datetime.now().isoformat(),
+        "url": decoded_url
+    })
+
+    background_tasks.add_task(
+        process_llm_extraction,
+        redis,
+        config,
+        task_id,
+        decoded_url,
+        query,
+        schema,
+        cache
+    )
+
+    return JSONResponse({
+        "task_id": task_id,
+        "status": TaskStatus.PROCESSING,
+        "url": decoded_url,
+        "_links": {
+            "self": {"href": f"{base_url}/llm/{task_id}"},
+            "status": {"href": f"{base_url}/llm/{task_id}"}
+        }
+    })
+
+def create_task_response(task: dict, task_id: str, base_url: str) -> dict:
+    """Create response for task status check."""
+    response = {
+        "task_id": task_id,
+        "status": task["status"],
+        "created_at": task["created_at"],
+        "url": task["url"],
+        "_links": {
+            "self": {"href": f"{base_url}/llm/{task_id}"},
+            "refresh": {"href": f"{base_url}/llm/{task_id}"}
+        }
+    }
+
+    if task["status"] == TaskStatus.COMPLETED:
+        response["result"] = json.loads(task["result"])
+    elif task["status"] == TaskStatus.FAILED:
+        response["error"] = task["error"]
+
+    return response
+
+async def stream_results(crawler: AsyncWebCrawler, results_gen: AsyncGenerator) -> AsyncGenerator[bytes, None]:
+    """Stream results with heartbeats and completion markers."""
+    import json
+    from utils import datetime_handler
+
+    try:
+        async for result in results_gen:
+            try:
+                result_dict = result.model_dump()
+                logger.info(f"Streaming result for {result_dict.get('url', 'unknown')}")
+                data = json.dumps(result_dict, default=datetime_handler) + "\n"
+                yield data.encode('utf-8')
+            except Exception as e:
+                logger.error(f"Serialization error: {e}")
+                error_response = {"error": str(e), "url": getattr(result, 'url', 'unknown')}
+                yield (json.dumps(error_response) + "\n").encode('utf-8')
+
+        yield json.dumps({"status": "completed"}).encode('utf-8')
+        
+    except asyncio.CancelledError:
+        logger.warning("Client disconnected during streaming")
+    finally:
+        try:
+            await crawler.close()
+        except Exception as e:
+            logger.error(f"Crawler cleanup error: {e}")
+
+async def handle_crawl_request(
+    urls: List[str],
+    browser_config: dict,
+    crawler_config: dict,
+    config: dict
+) -> dict:
+    """Handle non-streaming crawl requests."""
+    try:
+        browser_config = BrowserConfig.load(browser_config)
+        crawler_config = CrawlerRunConfig.load(crawler_config)
+
+        dispatcher = MemoryAdaptiveDispatcher(
+            memory_threshold_percent=config["crawler"]["memory_threshold_percent"],
+            rate_limiter=RateLimiter(
+                base_delay=tuple(config["crawler"]["rate_limiter"]["base_delay"])
+            )
+        )
+
+        async with AsyncWebCrawler(config=browser_config) as crawler:
+            results = await crawler.arun_many(
+                urls=urls,
+                config=crawler_config,
+                dispatcher=dispatcher
+            )
+            
+            return {
+                "success": True,
+                "results": [result.model_dump() for result in results]
+            }
+
+    except Exception as e:
+        logger.error(f"Crawl error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def handle_stream_crawl_request(
+    urls: List[str],
+    browser_config: dict,
+    crawler_config: dict,
+    config: dict
+) -> Tuple[AsyncWebCrawler, AsyncGenerator]:
+    """Handle streaming crawl requests."""
+    try:
+        browser_config = BrowserConfig.load(browser_config)
+        browser_config.verbose = True
+        crawler_config = CrawlerRunConfig.load(crawler_config)
+        crawler_config.scraping_strategy = LXMLWebScrapingStrategy()
+
+        dispatcher = MemoryAdaptiveDispatcher(
+            memory_threshold_percent=config["crawler"]["memory_threshold_percent"],
+            rate_limiter=RateLimiter(
+                base_delay=tuple(config["crawler"]["rate_limiter"]["base_delay"])
+            )
+        )
+
+        crawler = AsyncWebCrawler(config=browser_config)
+        await crawler.start()
+
+        results_gen = await crawler.arun_many(
+            urls=urls,
+            config=crawler_config,
+            dispatcher=dispatcher
+        )
+
+        return crawler, results_gen
+
+    except Exception as e:
+        if 'crawler' in locals():
+            await crawler.close()
+        logger.error(f"Stream crawl error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )

deploy/aws/docker/auth.py

@@ -0,0 +1,46 @@
+import os
+from datetime import datetime, timedelta, timezone
+from typing import Dict, Optional
+from jwt import JWT, jwk_from_dict
+from jwt.utils import get_int_from_datetime
+from fastapi import Depends, HTTPException
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from pydantic import EmailStr
+from pydantic.main import BaseModel
+import base64
+
+instance = JWT()
+security = HTTPBearer()
+SECRET_KEY = os.environ.get("SECRET_KEY", "mysecret")
+ACCESS_TOKEN_EXPIRE_MINUTES = 60
+
+def get_jwk_from_secret(secret: str):
+    """Convert a secret string into a JWK object."""
+    secret_bytes = secret.encode('utf-8')
+    b64_secret = base64.urlsafe_b64encode(secret_bytes).rstrip(b'=').decode('utf-8')
+    return jwk_from_dict({"kty": "oct", "k": b64_secret})
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """Create a JWT access token with an expiration."""
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
+    to_encode.update({"exp": get_int_from_datetime(expire)})
+    signing_key = get_jwk_from_secret(SECRET_KEY)
+    return instance.encode(to_encode, signing_key, alg='HS256')
+
+def verify_token(credentials: HTTPAuthorizationCredentials = Depends(security)) -> Dict:
+    """Verify the JWT token from the Authorization header."""
+    token = credentials.credentials
+    verifying_key = get_jwk_from_secret(SECRET_KEY)
+    try:
+        payload = instance.decode(token, verifying_key, do_time_check=True, algorithms='HS256')
+        return payload
+    except Exception:
+        raise HTTPException(status_code=401, detail="Invalid or expired token")
+
+def get_token_dependency(config: Dict):
+    """Return the token dependency if JWT is enabled, else None."""
+    return verify_token if config.get("security", {}).get("jwt_enabled", False) else None
+
+class TokenRequest(BaseModel):
+    email: EmailStr

deploy/aws/docker/config.yml

@@ -0,0 +1,71 @@
+# Application Configuration
+app:
+  title: "Crawl4AI API"
+  version: "1.0.0"
+  host: "0.0.0.0"
+  port: 8000
+  reload: True
+  timeout_keep_alive: 300
+
+# Default LLM Configuration
+llm:
+  provider: "openai/gpt-4o-mini"
+  api_key_env: "OPENAI_API_KEY"
+  # api_key: sk-...  # If you pass the API key directly then api_key_env will be ignored
+
+# Redis Configuration
+redis:
+  host: "localhost"
+  port: 6379
+  db: 0
+  password: ""
+  ssl: False
+  ssl_cert_reqs: None
+  ssl_ca_certs: None
+  ssl_certfile: None
+  ssl_keyfile: None
+  ssl_cert_reqs: None
+  ssl_ca_certs: None
+  ssl_certfile: None
+  ssl_keyfile: None
+
+# Rate Limiting Configuration
+rate_limiting:
+  enabled: True
+  default_limit: "1000/minute"
+  trusted_proxies: []
+  storage_uri: "memory://"  # Use "redis://localhost:6379" for production
+
+# Security Configuration
+security:
+  enabled: true 
+  jwt_enabled: true 
+  https_redirect: false
+  trusted_hosts: ["*"]
+  headers:
+    x_content_type_options: "nosniff"
+    x_frame_options: "DENY"
+    content_security_policy: "default-src 'self'"
+    strict_transport_security: "max-age=63072000; includeSubDomains"
+
+# Crawler Configuration
+crawler:
+  memory_threshold_percent: 95.0
+  rate_limiter:
+    base_delay: [1.0, 2.0]
+  timeouts:
+    stream_init: 30.0  # Timeout for stream initialization
+    batch_process: 300.0  # Timeout for batch processing
+
+# Logging Configuration
+logging:
+  level: "INFO"
+  format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+# Observability Configuration
+observability:
+  prometheus:
+    enabled: True
+    endpoint: "/metrics"
+  health_check:
+    endpoint: "/health"

deploy/aws/docker/requirements.txt

@@ -0,0 +1,10 @@
+crawl4ai
+fastapi
+uvicorn
+gunicorn>=23.0.0
+slowapi>=0.1.9
+prometheus-fastapi-instrumentator>=7.0.2
+redis>=5.2.1
+jwt>=1.3.1
+dnspython>=2.7.0
+email-validator>=2.2.0

deploy/aws/docker/server.py

@@ -0,0 +1,181 @@
+import os
+import sys
+import time
+from typing import List, Optional, Dict
+from fastapi import FastAPI, HTTPException, Request, Query, Path, Depends
+from fastapi.responses import StreamingResponse, RedirectResponse, PlainTextResponse, JSONResponse
+from fastapi.middleware.httpsredirect import HTTPSRedirectMiddleware
+from fastapi.middleware.trustedhost import TrustedHostMiddleware
+from pydantic import BaseModel, Field
+from slowapi import Limiter
+from slowapi.util import get_remote_address
+from prometheus_fastapi_instrumentator import Instrumentator
+from redis import asyncio as aioredis
+
+sys.path.append(os.path.dirname(os.path.realpath(__file__)))
+from utils import FilterType, load_config, setup_logging, verify_email_domain
+from api import (
+    handle_markdown_request,
+    handle_llm_qa,
+    handle_stream_crawl_request,
+    handle_crawl_request,
+    stream_results
+)
+from auth import create_access_token, get_token_dependency, TokenRequest  # Import from auth.py
+
+__version__ = "0.2.6"
+
+class CrawlRequest(BaseModel):
+    urls: List[str] = Field(min_length=1, max_length=100)
+    browser_config: Optional[Dict] = Field(default_factory=dict)
+    crawler_config: Optional[Dict] = Field(default_factory=dict)
+
+# Load configuration and setup
+config = load_config()
+setup_logging(config)
+
+# Initialize Redis
+redis = aioredis.from_url(config["redis"].get("uri", "redis://localhost"))
+
+# Initialize rate limiter
+limiter = Limiter(
+    key_func=get_remote_address,
+    default_limits=[config["rate_limiting"]["default_limit"]],
+    storage_uri=config["rate_limiting"]["storage_uri"]
+)
+
+app = FastAPI(
+    title=config["app"]["title"],
+    version=config["app"]["version"]
+)
+
+# Configure middleware
+def setup_security_middleware(app, config):
+    sec_config = config.get("security", {})
+    if sec_config.get("enabled", False):
+        if sec_config.get("https_redirect", False):
+            app.add_middleware(HTTPSRedirectMiddleware)
+        if sec_config.get("trusted_hosts", []) != ["*"]:
+            app.add_middleware(TrustedHostMiddleware, allowed_hosts=sec_config["trusted_hosts"])
+
+setup_security_middleware(app, config)
+
+# Prometheus instrumentation
+if config["observability"]["prometheus"]["enabled"]:
+    Instrumentator().instrument(app).expose(app)
+
+# Get token dependency based on config
+token_dependency = get_token_dependency(config)
+
+# Middleware for security headers
+@app.middleware("http")
+async def add_security_headers(request: Request, call_next):
+    response = await call_next(request)
+    if config["security"]["enabled"]:
+        response.headers.update(config["security"]["headers"])
+    return response
+
+# Token endpoint (always available, but usage depends on config)
+@app.post("/token")
+async def get_token(request_data: TokenRequest):
+    if not verify_email_domain(request_data.email):
+        raise HTTPException(status_code=400, detail="Invalid email domain")
+    token = create_access_token({"sub": request_data.email})
+    return {"email": request_data.email, "access_token": token, "token_type": "bearer"}
+
+# Endpoints with conditional auth
+@app.get("/md/{url:path}")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def get_markdown(
+    request: Request,
+    url: str,
+    f: FilterType = FilterType.FIT,
+    q: Optional[str] = None,
+    c: Optional[str] = "0",
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    result = await handle_markdown_request(url, f, q, c, config)
+    return PlainTextResponse(result)
+
+@app.get("/llm/{url:path}", description="URL should be without http/https prefix")
+async def llm_endpoint(
+    request: Request,
+    url: str = Path(...),
+    q: Optional[str] = Query(None),
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not q:
+        raise HTTPException(status_code=400, detail="Query parameter 'q' is required")
+    if not url.startswith(('http://', 'https://')):
+        url = 'https://' + url
+    try:
+        answer = await handle_llm_qa(url, q, config)
+        return JSONResponse({"answer": answer})
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+@app.get("/schema")
+async def get_schema():
+    from crawl4ai import BrowserConfig, CrawlerRunConfig
+    return {"browser": BrowserConfig().dump(), "crawler": CrawlerRunConfig().dump()}
+
+@app.get(config["observability"]["health_check"]["endpoint"])
+async def health():
+    return {"status": "ok", "timestamp": time.time(), "version": __version__}
+
+@app.get(config["observability"]["prometheus"]["endpoint"])
+async def metrics():
+    return RedirectResponse(url=config["observability"]["prometheus"]["endpoint"])
+
+@app.post("/crawl")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def crawl(
+    request: Request,
+    crawl_request: CrawlRequest,
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not crawl_request.urls:
+        raise HTTPException(status_code=400, detail="At least one URL required")
+    
+    results = await handle_crawl_request(
+        urls=crawl_request.urls,
+        browser_config=crawl_request.browser_config,
+        crawler_config=crawl_request.crawler_config,
+        config=config
+    )
+
+    return JSONResponse(results)
+
+
+@app.post("/crawl/stream")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def crawl_stream(
+    request: Request,
+    crawl_request: CrawlRequest,
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not crawl_request.urls:
+        raise HTTPException(status_code=400, detail="At least one URL required")
+
+    crawler, results_gen = await handle_stream_crawl_request(
+        urls=crawl_request.urls,
+        browser_config=crawl_request.browser_config,
+        crawler_config=crawl_request.crawler_config,
+        config=config
+    )
+
+    return StreamingResponse(
+        stream_results(crawler, results_gen),
+        media_type='application/x-ndjson',
+        headers={'Cache-Control': 'no-cache', 'Connection': 'keep-alive', 'X-Stream-Status': 'active'}
+    )
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(
+        "server:app",
+        host=config["app"]["host"],
+        port=config["app"]["port"],
+        reload=config["app"]["reload"],
+        timeout_keep_alive=config["app"]["timeout_keep_alive"]
+    )

deploy/aws/docker/supervisord.conf

@@ -0,0 +1,12 @@
+[supervisord]
+nodaemon=true
+
+[program:redis]
+command=redis-server
+autorestart=true
+priority=10
+
+[program:gunicorn]
+command=gunicorn --bind 0.0.0.0:8000 --workers 4 --threads 2 --timeout 300 --graceful-timeout 60 --keep-alive 65 --log-level debug --worker-class uvicorn.workers.UvicornWorker --max-requests 1000 --max-requests-jitter 50 server:app
+autorestart=true
+priority=20

deploy/aws/docker/utils.py

@@ -0,0 +1,66 @@
+import dns.resolver
+import logging
+import yaml
+from datetime import datetime
+from enum import Enum
+from pathlib import Path
+from fastapi import Request
+from typing import Dict, Optional
+
+class TaskStatus(str, Enum):
+    PROCESSING = "processing"
+    FAILED = "failed"
+    COMPLETED = "completed"
+
+class FilterType(str, Enum):
+    RAW = "raw"
+    FIT = "fit"
+    BM25 = "bm25"
+    LLM = "llm"
+
+def load_config() -> Dict:
+    """Load and return application configuration."""
+    config_path = Path(__file__).parent / "config.yml"
+    with open(config_path, "r") as config_file:
+        return yaml.safe_load(config_file)
+
+def setup_logging(config: Dict) -> None:
+    """Configure application logging."""
+    logging.basicConfig(
+        level=config["logging"]["level"],
+        format=config["logging"]["format"]
+    )
+
+def get_base_url(request: Request) -> str:
+    """Get base URL including scheme and host."""
+    return f"{request.url.scheme}://{request.url.netloc}"
+
+def is_task_id(value: str) -> bool:
+    """Check if the value matches task ID pattern."""
+    return value.startswith("llm_") and "_" in value
+
+def datetime_handler(obj: any) -> Optional[str]:
+    """Handle datetime serialization for JSON."""
+    if hasattr(obj, 'isoformat'):
+        return obj.isoformat()
+    raise TypeError(f"Object of type {type(obj)} is not JSON serializable")
+
+def should_cleanup_task(created_at: str) -> bool:
+    """Check if task should be cleaned up based on creation time."""
+    created = datetime.fromisoformat(created_at)
+    return (datetime.now() - created).total_seconds() > 3600
+
+def decode_redis_hash(hash_data: Dict[bytes, bytes]) -> Dict[str, str]:
+    """Decode Redis hash data from bytes to strings."""
+    return {k.decode('utf-8'): v.decode('utf-8') for k, v in hash_data.items()}
+
+
+
+def verify_email_domain(email: str) -> bool:
+    try:
+        domain = email.split('@')[1]
+        # Try to resolve MX records for the domain.
+        records = dns.resolver.resolve(domain, 'MX')
+        return True if records else False
+    except Exception as e:
+        return False

deploy/aws/howto.md

@@ -0,0 +1,77 @@
+# Crawl4AI API Quickstart
+
+This document shows how to generate an API token and use it to call the `/crawl` and `/md` endpoints.
+
+---
+
+## 1. Crawl Example
+
+Send a POST request to `/crawl` with the following JSON payload:
+
+```json
+{
+  "urls": ["https://example.com"],
+  "browser_config": { "headless": true, "verbose": true },
+  "crawler_config": { "stream": false, "cache_mode": "enabled" }
+}
+```
+
+**cURL Command:**
+
+```bash
+curl -X POST "https://api.crawl4ai.com/crawl" \
+  -H "Authorization: Bearer YOUR_API_TOKEN" \
+  -H "Content-Type: application/json" \
+  -d '{
+        "urls": ["https://example.com"],
+        "browser_config": {"headless": true, "verbose": true},
+        "crawler_config": {"stream": false, "cache_mode": "enabled"}
+      }'
+```
+
+---
+
+## 2. Markdown Retrieval Example
+
+To retrieve markdown from a given URL (e.g., `https://example.com`), use:
+
+```bash
+curl -X GET "https://api.crawl4ai.com/md/example.com" \
+  -H "Authorization: Bearer YOUR_API_TOKEN"
+```
+
+---
+
+## 3. Python Code Example (Using `requests`)
+
+Below is a sample Python script that demonstrates using the `requests` library to call the API endpoints:
+
+```python
+import requests
+
+BASE_URL = "https://api.crawl4ai.com"
+TOKEN = "YOUR_API_TOKEN"  # Replace with your actual token
+
+headers = {
+    "Authorization": f"Bearer {TOKEN}",
+    "Content-Type": "application/json"
+}
+
+# Crawl endpoint example
+crawl_payload = {
+    "urls": ["https://example.com"],
+    "browser_config": {"headless": True, "verbose": True},
+    "crawler_config": {"stream": False, "cache_mode": "enabled"}
+}
+
+crawl_response = requests.post(f"{BASE_URL}/crawl", json=crawl_payload, headers=headers)
+print("Crawl Response:", crawl_response.json())
+
+# /md endpoint example
+md_response = requests.get(f"{BASE_URL}/md/example.com", headers=headers)
+print("Markdown Content:", md_response.text)
+```
+
+---
+
+Happy crawling!

deploy/aws/nginx/Dockerfile

@@ -0,0 +1,2 @@
+FROM nginx:alpine
+COPY nginx.conf /etc/nginx/conf.d/default.conf

deploy/aws/nginx/nginx.conf

@@ -0,0 +1,55 @@
+server {
+    listen 80;
+    server_name api.crawl4ai.com;
+
+    # Main logging settings
+    error_log /var/log/nginx/error.log debug;
+    access_log /var/log/nginx/access.log combined buffer=512k flush=1m;
+
+    # Timeout and buffering settings
+    proxy_connect_timeout 300;
+    proxy_send_timeout 300;
+    proxy_read_timeout 300;
+    send_timeout 300;
+    proxy_buffer_size 128k;
+    proxy_buffers 4 256k;
+    proxy_busy_buffers_size 256k;
+
+    # Health check location
+    location /health {
+        proxy_pass http://127.0.0.1:8000/health;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # Main proxy for application endpoints
+    location / {
+        proxy_pass http://127.0.0.1:8000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        add_header X-Debug-Info $request_uri;
+        proxy_request_buffering off;
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+        proxy_buffering off;
+    }
+
+    # New endpoint: serve Nginx error log
+    location /nginx/error {
+        # Using "alias" to serve the error log file
+        alias /var/log/nginx/error.log;
+        # Optionally, you might restrict access with "allow" and "deny" directives.
+    }
+
+    # New endpoint: serve Nginx access log
+    location /nginx/access {
+        alias /var/log/nginx/access.log;
+    }
+
+    client_max_body_size 10M;
+    client_body_buffer_size 128k;
+}

deploy/aws/version.txt

@@ -0,0 +1 @@
+v0.1.0

deploy/docker/.dockerignore

@@ -0,0 +1,31 @@
+# .dockerignore
+*
+
+# Allow specific files and directories when using local installation
+!crawl4ai/
+!docs/
+!deploy/docker/
+!setup.py
+!pyproject.toml
+!README.md
+!LICENSE
+!MANIFEST.in
+!setup.cfg
+!mkdocs.yml
+
+.git/
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.DS_Store
+.env
+.venv
+venv/
+tests/
+coverage.xml
+*.log
+*.swp
+*.egg-info/
+dist/
+build/

deploy/docker/.llm.env.example

@@ -0,0 +1,8 @@
+# LLM Provider Keys
+OPENAI_API_KEY=your_openai_key_here
+DEEPSEEK_API_KEY=your_deepseek_key_here
+ANTHROPIC_API_KEY=your_anthropic_key_here
+GROQ_API_KEY=your_groq_key_here
+TOGETHER_API_KEY=your_together_key_here
+MISTRAL_API_KEY=your_mistral_key_here
+GEMINI_API_TOKEN=your_gemini_key_here

deploy/docker/README.md

@@ -0,0 +1,833 @@
+# Crawl4AI Docker Guide 🐳
+
+## Table of Contents
+- [Prerequisites](#prerequisites)
+- [Installation](#installation)
+  - [Local Build](#local-build)
+  - [Docker Hub](#docker-hub)
+- [Dockerfile Parameters](#dockerfile-parameters)
+- [Using the API](#using-the-api)
+  - [Understanding Request Schema](#understanding-request-schema)
+  - [REST API Examples](#rest-api-examples)
+  - [Python SDK](#python-sdk)
+- [Metrics & Monitoring](#metrics--monitoring)
+- [Deployment Scenarios](#deployment-scenarios)
+- [Complete Examples](#complete-examples)
+- [Getting Help](#getting-help)
+
+## Prerequisites
+
+Before we dive in, make sure you have:
+- Docker installed and running (version 20.10.0 or higher)
+- At least 4GB of RAM available for the container
+- Python 3.10+ (if using the Python SDK)
+- Node.js 16+ (if using the Node.js examples)
+
+> 💡 **Pro tip**: Run `docker info` to check your Docker installation and available resources.
+
+## Installation
+
+### Local Build
+
+Let's get your local environment set up step by step!
+
+#### 1. Building the Image
+
+First, clone the repository and build the Docker image:
+
+```bash
+# Clone the repository
+git clone https://github.com/unclecode/crawl4ai.git
+cd crawl4ai/deploy
+
+# Build the Docker image
+docker build --platform=linux/amd64 --no-cache -t crawl4ai .
+
+# Or build for arm64
+docker build --platform=linux/arm64 --no-cache -t crawl4ai .
+```
+
+#### 2. Environment Setup
+
+If you plan to use LLMs (Language Models), you'll need to set up your API keys. Create a `.llm.env` file:
+
+```env
+# OpenAI
+OPENAI_API_KEY=sk-your-key
+
+# Anthropic
+ANTHROPIC_API_KEY=your-anthropic-key
+
+# DeepSeek
+DEEPSEEK_API_KEY=your-deepseek-key
+
+# Check out https://docs.litellm.ai/docs/providers for more providers!
+```
+
+> 🔑 **Note**: Keep your API keys secure! Never commit them to version control.
+
+#### 3. Running the Container
+
+You have several options for running the container:
+
+Basic run (no LLM support):
+```bash
+docker run -d -p 8000:8000 --name crawl4ai crawl4ai
+```
+
+With LLM support:
+```bash
+docker run -d -p 8000:8000 \
+  --env-file .llm.env \
+  --name crawl4ai \
+  crawl4ai
+```
+
+Using host environment variables (Not a good practice, but works for local testing):
+```bash
+docker run -d -p 8000:8000 \
+  --env-file .llm.env \
+  --env "$(env)" \
+  --name crawl4ai \
+  crawl4ai
+```
+
+#### Multi-Platform Build
+For distributing your image across different architectures, use `buildx`:
+
+```bash
+# Set up buildx builder
+docker buildx create --use
+
+# Build for multiple platforms
+docker buildx build \
+  --platform linux/amd64,linux/arm64 \
+  -t crawl4ai \
+  --push \
+  .
+```
+
+> 💡 **Note**: Multi-platform builds require Docker Buildx and need to be pushed to a registry.
+
+#### Development Build
+For development, you might want to enable all features:
+
+```bash
+docker build -t crawl4ai
+  --build-arg INSTALL_TYPE=all \
+  --build-arg PYTHON_VERSION=3.10 \
+  --build-arg ENABLE_GPU=true \
+  .
+```
+
+#### GPU-Enabled Build
+If you plan to use GPU acceleration:
+
+```bash
+docker build -t crawl4ai
+  --build-arg ENABLE_GPU=true \
+  deploy/docker/
+```
+
+### Build Arguments Explained
+
+| Argument | Description | Default | Options |
+|----------|-------------|---------|----------|
+| PYTHON_VERSION | Python version | 3.10 | 3.8, 3.9, 3.10 |
+| INSTALL_TYPE | Feature set | default | default, all, torch, transformer |
+| ENABLE_GPU | GPU support | false | true, false |
+| APP_HOME | Install path | /app | any valid path |
+
+### Build Best Practices
+
+1. **Choose the Right Install Type**
+   - `default`: Basic installation, smallest image, to be honest, I use this most of the time.
+   - `all`: Full features, larger image (include transformer, and nltk, make sure you really need them)
+
+2. **Platform Considerations**
+   - Let Docker auto-detect platform unless you need cross-compilation
+   - Use --platform for specific architecture requirements
+   - Consider buildx for multi-architecture distribution
+
+3. **Performance Optimization**
+   - The image automatically includes platform-specific optimizations
+   - AMD64 gets OpenMP optimizations
+   - ARM64 gets OpenBLAS optimizations
+
+### Docker Hub
+
+> 🚧 Coming soon! The image will be available at `crawl4ai`. Stay tuned!
+
+## Using the API
+
+In the following sections, we discuss two ways to communicate with the Docker server. One option is to use the client SDK that I developed for Python, and I will soon develop one for Node.js. I highly recommend this approach to avoid mistakes. Alternatively, you can take a more technical route by using the JSON structure and passing it to all the URLs, which I will explain in detail.
+
+### Python SDK
+
+The SDK makes things easier! Here's how to use it:
+
+```python
+from crawl4ai.docker_client import Crawl4aiDockerClient
+from crawl4ai import BrowserConfig, CrawlerRunConfig
+
+async def main():
+    async with Crawl4aiDockerClient(base_url="http://localhost:8000", verbose=True) as client:
+      # If JWT is enabled, you can authenticate like this: (more on this later)
+        # await client.authenticate("test@example.com")
+        
+        # Non-streaming crawl
+        results = await client.crawl(
+            ["https://example.com", "https://python.org"],
+            browser_config=BrowserConfig(headless=True),
+            crawler_config=CrawlerRunConfig()
+        )
+        print(f"Non-streaming results: {results}")
+        
+        # Streaming crawl
+        crawler_config = CrawlerRunConfig(stream=True)
+        async for result in await client.crawl(
+            ["https://example.com", "https://python.org"],
+            browser_config=BrowserConfig(headless=True),
+            crawler_config=crawler_config
+        ):
+            print(f"Streamed result: {result}")
+        
+        # Get schema
+        schema = await client.get_schema()
+        print(f"Schema: {schema}")
+
+if __name__ == "__main__":
+    asyncio.run(main())
+```
+
+`Crawl4aiDockerClient` is an async context manager that handles the connection for you. You can pass in optional parameters for more control:
+
+- `base_url` (str): Base URL of the Crawl4AI Docker server
+- `timeout` (float): Default timeout for requests in seconds
+- `verify_ssl` (bool): Whether to verify SSL certificates
+- `verbose` (bool): Whether to show logging output
+- `log_file` (str, optional): Path to log file if file logging is desired
+
+This client SDK generates a properly structured JSON request for the server's HTTP API.
+
+## Second Approach: Direct API Calls
+
+This is super important! The API expects a specific structure that matches our Python classes. Let me show you how it works.
+
+### Understanding Configuration Structure
+
+Let's dive deep into how configurations work in Crawl4AI. Every configuration object follows a consistent pattern of `type` and `params`. This structure enables complex, nested configurations while maintaining clarity.
+
+#### The Basic Pattern
+
+Try this in Python to understand the structure:
+```python
+from crawl4ai import BrowserConfig
+
+# Create a config and see its structure
+config = BrowserConfig(headless=True)
+print(config.dump())
+```
+
+This outputs:
+```json
+{
+    "type": "BrowserConfig",
+    "params": {
+        "headless": true
+    }
+}
+```
+
+#### Simple vs Complex Values
+
+The structure follows these rules:
+- Simple values (strings, numbers, booleans, lists) are passed directly
+- Complex values (classes, dictionaries) use the type-params pattern
+
+For example, with dictionaries:
+```json
+{
+    "browser_config": {
+        "type": "BrowserConfig",
+        "params": {
+            "headless": true,           // Simple boolean - direct value
+            "viewport": {               // Complex dictionary - needs type-params
+                "type": "dict",
+                "value": {
+                    "width": 1200,
+                    "height": 800
+                }
+            }
+        }
+    }
+}
+```
+
+#### Strategy Pattern and Nesting
+
+Strategies (like chunking or content filtering) demonstrate why we need this structure. Consider this chunking configuration:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "chunking_strategy": {
+                "type": "RegexChunking",      // Strategy implementation
+                "params": {
+                    "patterns": ["\n\n", "\\.\\s+"]
+                }
+            }
+        }
+    }
+}
+```
+
+Here, `chunking_strategy` accepts any chunking implementation. The `type` field tells the system which strategy to use, and `params` configures that specific strategy.
+
+#### Complex Nested Example
+
+Let's look at a more complex example with content filtering:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "markdown_generator": {
+                "type": "DefaultMarkdownGenerator",
+                "params": {
+                    "content_filter": {
+                        "type": "PruningContentFilter",
+                        "params": {
+                            "threshold": 0.48,
+                            "threshold_type": "fixed"
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+This shows how deeply configurations can nest while maintaining a consistent structure.
+
+#### Quick Grammar Overview
+```
+config := {
+    "type": string,
+    "params": {
+        key: simple_value | complex_value
+    }
+}
+
+simple_value := string | number | boolean | [simple_value]
+complex_value := config | dict_value
+
+dict_value := {
+    "type": "dict",
+    "value": object
+}
+```
+
+#### Important Rules 🚨
+
+- Always use the type-params pattern for class instances
+- Use direct values for primitives (numbers, strings, booleans)
+- Wrap dictionaries with {"type": "dict", "value": {...}}
+- Arrays/lists are passed directly without type-params
+- All parameters are optional unless specifically required
+
+#### Pro Tip 💡
+
+The easiest way to get the correct structure is to:
+1. Create configuration objects in Python
+2. Use the `dump()` method to see their JSON representation
+3. Use that JSON in your API calls
+
+Example:
+```python
+from crawl4ai import CrawlerRunConfig, PruningContentFilter
+
+config = CrawlerRunConfig(
+    markdown_generator=DefaultMarkdownGenerator(
+        content_filter=PruningContentFilter(threshold=0.48, threshold_type="fixed")
+    ),
+    cache_mode= CacheMode.BYPASS
+)
+print(config.dump())  # Use this JSON in your API calls
+```
+
+
+#### More Examples
+
+**Advanced Crawler Configuration**
+
+```json
+{
+    "urls": ["https://example.com"],
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "cache_mode": "bypass",
+            "markdown_generator": {
+                "type": "DefaultMarkdownGenerator",
+                "params": {
+                    "content_filter": {
+                        "type": "PruningContentFilter",
+                        "params": {
+                            "threshold": 0.48,
+                            "threshold_type": "fixed",
+                            "min_word_threshold": 0
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+**Extraction Strategy**:
+
+```json
+{
+    "crawler_config": {
+        "type": "CrawlerRunConfig",
+        "params": {
+            "extraction_strategy": {
+                "type": "JsonCssExtractionStrategy",
+                "params": {
+                    "schema": {
+                        "baseSelector": "article.post",
+                        "fields": [
+                            {"name": "title", "selector": "h1", "type": "text"},
+                            {"name": "content", "selector": ".content", "type": "html"}
+                        ]
+                    }
+                }
+            }
+        }
+    }
+}
+```
+
+**LLM Extraction Strategy**
+
+```json
+{
+  "crawler_config": {
+    "type": "CrawlerRunConfig",
+    "params": {
+      "extraction_strategy": {
+        "type": "LLMExtractionStrategy",
+        "params": {
+          "instruction": "Extract article title, author, publication date and main content",
+          "provider": "openai/gpt-4",
+          "api_token": "your-api-token",
+          "schema": {
+            "type": "dict",
+            "value": {
+              "title": "Article Schema",
+              "type": "object",
+              "properties": {
+                "title": {
+                  "type": "string",
+                  "description": "The article's headline"
+                },
+                "author": {
+                  "type": "string",
+                  "description": "The author's name"
+                },
+                "published_date": {
+                  "type": "string",
+                  "format": "date-time",
+                  "description": "Publication date and time"
+                },
+                "content": {
+                  "type": "string",
+                  "description": "The main article content"
+                }
+              },
+              "required": ["title", "content"]
+            }
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+**Deep Crawler Example**
+
+```json
+{
+  "crawler_config": {
+    "type": "CrawlerRunConfig",
+    "params": {
+      "deep_crawl_strategy": {
+        "type": "BFSDeepCrawlStrategy",
+        "params": {
+          "max_depth": 3,
+          "filter_chain": {
+            "type": "FilterChain",
+            "params": {
+              "filters": [
+                {
+                  "type": "ContentTypeFilter",
+                  "params": {
+                    "allowed_types": ["text/html", "application/xhtml+xml"]
+                  }
+                },
+                {
+                  "type": "DomainFilter",
+                  "params": {
+                    "allowed_domains": ["blog.*", "docs.*"],
+                  }
+                }
+              ]
+            }
+          },
+          "url_scorer": {
+            "type": "CompositeScorer",
+            "params": {
+              "scorers": [
+                {
+                  "type": "KeywordRelevanceScorer",
+                  "params": {
+                    "keywords": ["tutorial", "guide", "documentation"],
+                  }
+                },
+                {
+                  "type": "PathDepthScorer",
+                  "params": {
+                    "weight": 0.5,
+                    "optimal_depth": 3  
+                  }
+                }
+              ]
+            }
+          }
+        }
+      }
+    }
+  }
+}
+```
+
+### REST API Examples
+
+Let's look at some practical examples:
+
+#### Simple Crawl
+
+```python
+import requests
+
+crawl_payload = {
+    "urls": ["https://example.com"],
+    "browser_config": {"headless": True},
+    "crawler_config": {"stream": False}
+}
+response = requests.post(
+    "http://localhost:8000/crawl",
+    # headers={"Authorization": f"Bearer {token}"},  # If JWT is enabled, more on this later
+    json=crawl_payload
+)
+print(response.json())  # Print the response for debugging
+```
+
+#### Streaming Results
+
+```python
+async def test_stream_crawl(session, token: str):
+    """Test the /crawl/stream endpoint with multiple URLs."""
+    url = "http://localhost:8000/crawl/stream"
+    payload = {
+        "urls": [
+            "https://example.com",
+            "https://example.com/page1",  
+            "https://example.com/page2",  
+            "https://example.com/page3",  
+        ],
+        "browser_config": {"headless": True, "viewport": {"width": 1200}},
+        "crawler_config": {"stream": True, "cache_mode": "aggressive"}
+    }
+
+    # headers = {"Authorization": f"Bearer {token}"} # If JWT is enabled, more on this later
+    
+    try:
+        async with session.post(url, json=payload, headers=headers) as response:
+            status = response.status
+            print(f"Status: {status} (Expected: 200)")
+            assert status == 200, f"Expected 200, got {status}"
+            
+            # Read streaming response line-by-line (NDJSON)
+            async for line in response.content:
+                if line:
+                    data = json.loads(line.decode('utf-8').strip())
+                    print(f"Streamed Result: {json.dumps(data, indent=2)}")
+    except Exception as e:
+        print(f"Error in streaming crawl test: {str(e)}")
+```
+
+## Metrics & Monitoring
+
+Keep an eye on your crawler with these endpoints:
+
+- `/health` - Quick health check
+- `/metrics` - Detailed Prometheus metrics
+- `/schema` - Full API schema
+
+Example health check:
+```bash
+curl http://localhost:8000/health
+```
+
+## Deployment Scenarios
+
+> 🚧 Coming soon! We'll cover:
+> - Kubernetes deployment
+> - Cloud provider setups (AWS, GCP, Azure)
+> - High-availability configurations
+> - Load balancing strategies
+
+## Complete Examples
+
+Check out the `examples` folder in our repository for full working examples! Here are two to get you started:
+[Using Client SDK](https://github.com/unclecode/crawl4ai/blob/main/docs/examples/docker_python_sdk.py)
+[Using REST API](https://github.com/unclecode/crawl4ai/blob/main/docs/examples/docker_python_rest_api.py)
+
+## Server Configuration
+
+The server's behavior can be customized through the `config.yml` file. Let's explore how to configure your Crawl4AI server for optimal performance and security.
+
+### Understanding config.yml
+
+The configuration file is located at `deploy/docker/config.yml`. You can either modify this file before building the image or mount a custom configuration when running the container.
+
+Here's a detailed breakdown of the configuration options:
+
+```yaml
+# Application Configuration
+app:
+  title: "Crawl4AI API"           # Server title in OpenAPI docs
+  version: "1.0.0"               # API version
+  host: "0.0.0.0"               # Listen on all interfaces
+  port: 8000                    # Server port
+  reload: True                  # Enable hot reloading (development only)
+  timeout_keep_alive: 300       # Keep-alive timeout in seconds
+
+# Rate Limiting Configuration
+rate_limiting:
+  enabled: True                 # Enable/disable rate limiting
+  default_limit: "100/minute"   # Rate limit format: "number/timeunit"
+  trusted_proxies: []          # List of trusted proxy IPs
+  storage_uri: "memory://"     # Use "redis://localhost:6379" for production
+
+# Security Configuration
+security:
+  enabled: false               # Master toggle for security features
+  jwt_enabled: true            # Enable JWT authentication
+  https_redirect: True         # Force HTTPS
+  trusted_hosts: ["*"]         # Allowed hosts (use specific domains in production)
+  headers:                     # Security headers
+    x_content_type_options: "nosniff"
+    x_frame_options: "DENY"
+    content_security_policy: "default-src 'self'"
+    strict_transport_security: "max-age=63072000; includeSubDomains"
+
+# Crawler Configuration
+crawler:
+  memory_threshold_percent: 95.0  # Memory usage threshold
+  rate_limiter:
+    base_delay: [1.0, 2.0]      # Min and max delay between requests
+  timeouts:
+    stream_init: 30.0           # Stream initialization timeout
+    batch_process: 300.0        # Batch processing timeout
+
+# Logging Configuration
+logging:
+  level: "INFO"                 # Log level (DEBUG, INFO, WARNING, ERROR)
+  format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+# Observability Configuration
+observability:
+  prometheus:
+    enabled: True              # Enable Prometheus metrics
+    endpoint: "/metrics"       # Metrics endpoint
+  health_check:
+    endpoint: "/health"        # Health check endpoint
+```
+
+### JWT Authentication
+
+When `security.jwt_enabled` is set to `true` in your config.yml, all endpoints require JWT authentication via bearer tokens. Here's how it works:
+
+#### Getting a Token
+```python
+POST /token
+Content-Type: application/json
+
+{
+    "email": "user@example.com"
+}
+```
+
+The endpoint returns:
+```json
+{
+    "email": "user@example.com",
+    "access_token": "eyJ0eXAiOiJKV1QiLCJhbGciOi...",
+    "token_type": "bearer"
+}
+```
+
+#### Using the Token
+Add the token to your requests:
+```bash
+curl -H "Authorization: Bearer eyJ0eXAiOiJKV1QiLCJhbGci..." http://localhost:8000/crawl
+```
+
+Using the Python SDK:
+```python
+from crawl4ai.docker_client import Crawl4aiDockerClient
+
+async with Crawl4aiDockerClient() as client:
+    # Authenticate first
+    await client.authenticate("user@example.com")
+    
+    # Now all requests will include the token automatically
+    result = await client.crawl(urls=["https://example.com"])
+```
+
+#### Production Considerations 💡
+The default implementation uses a simple email verification. For production use, consider:
+- Email verification via OTP/magic links
+- OAuth2 integration
+- Rate limiting token generation
+- Token expiration and refresh mechanisms
+- IP-based restrictions
+
+### Configuration Tips and Best Practices
+
+1. **Production Settings** 🏭
+
+   ```yaml
+   app:
+     reload: False              # Disable reload in production
+     timeout_keep_alive: 120    # Lower timeout for better resource management
+   
+   rate_limiting:
+     storage_uri: "redis://redis:6379"  # Use Redis for distributed rate limiting
+     default_limit: "50/minute"         # More conservative rate limit
+   
+   security:
+     enabled: true                      # Enable all security features
+     trusted_hosts: ["your-domain.com"] # Restrict to your domain
+   ```
+
+2. **Development Settings** 🛠️
+
+   ```yaml
+   app:
+     reload: True               # Enable hot reloading
+     timeout_keep_alive: 300    # Longer timeout for debugging
+   
+   logging:
+     level: "DEBUG"            # More verbose logging
+   ```
+
+3. **High-Traffic Settings** 🚦
+
+   ```yaml
+   crawler:
+     memory_threshold_percent: 85.0  # More conservative memory limit
+     rate_limiter:
+       base_delay: [2.0, 4.0]       # More aggressive rate limiting
+   ```
+
+### Customizing Your Configuration
+
+#### Method 1: Pre-build Configuration
+
+```bash
+# Copy and modify config before building
+cd crawl4ai/deploy
+vim custom-config.yml # Or use any editor
+
+# Build with custom config
+docker build --platform=linux/amd64 --no-cache -t crawl4ai:latest .
+```
+
+#### Method 2: Build-time Configuration
+
+Use a custom config during build:
+
+```bash
+# Build with custom config
+docker build --platform=linux/amd64 --no-cache \
+  --build-arg CONFIG_PATH=/path/to/custom-config.yml \ 
+  -t crawl4ai:latest .
+```
+
+#### Method 3: Runtime Configuration
+```bash
+# Mount custom config at runtime
+docker run -d -p 8000:8000 \
+  -v $(pwd)/custom-config.yml:/app/config.yml \
+  crawl4ai-server:prod
+```
+
+> 💡 Note: When using Method 2, `/path/to/custom-config.yml` is relative to deploy directory.
+> 💡 Note: When using Method 3, ensure your custom config file has all required fields as the container will use this instead of the built-in config.
+
+### Configuration Recommendations
+
+1. **Security First** 🔒
+   - Always enable security in production
+   - Use specific trusted_hosts instead of wildcards
+   - Set up proper rate limiting to protect your server
+   - Consider your environment before enabling HTTPS redirect
+
+2. **Resource Management** 💻
+   - Adjust memory_threshold_percent based on available RAM
+   - Set timeouts according to your content size and network conditions
+   - Use Redis for rate limiting in multi-container setups
+
+3. **Monitoring** 📊
+   - Enable Prometheus if you need metrics
+   - Set DEBUG logging in development, INFO in production
+   - Regular health check monitoring is crucial
+
+4. **Performance Tuning** ⚡
+   - Start with conservative rate limiter delays
+   - Increase batch_process timeout for large content
+   - Adjust stream_init timeout based on initial response times
+
+## Getting Help
+
+We're here to help you succeed with Crawl4AI! Here's how to get support:
+
+- 📖 Check our [full documentation](https://docs.crawl4ai.com)
+- 🐛 Found a bug? [Open an issue](https://github.com/unclecode/crawl4ai/issues)
+- 💬 Join our [Discord community](https://discord.gg/crawl4ai)
+- ⭐ Star us on GitHub to show support!
+
+## Summary
+
+In this guide, we've covered everything you need to get started with Crawl4AI's Docker deployment:
+- Building and running the Docker container
+- Configuring the environment
+- Making API requests with proper typing
+- Using the Python SDK
+- Monitoring your deployment
+
+Remember, the examples in the `examples` folder are your friends - they show real-world usage patterns that you can adapt for your needs.
+
+Keep exploring, and don't hesitate to reach out if you need help! We're building something amazing together. 🚀
+
+Happy crawling! 🕷️

deploy/docker/api.py

@@ -0,0 +1,447 @@
+import os
+import json
+import asyncio
+from typing import List, Tuple
+
+import logging
+from typing import Optional, AsyncGenerator
+from urllib.parse import unquote
+from fastapi import HTTPException, Request, status
+from fastapi.background import BackgroundTasks
+from fastapi.responses import JSONResponse
+from redis import asyncio as aioredis
+
+from crawl4ai import (
+    AsyncWebCrawler,
+    CrawlerRunConfig,
+    LLMExtractionStrategy,
+    CacheMode,
+    BrowserConfig,
+    MemoryAdaptiveDispatcher,
+    RateLimiter, 
+    LLMConfig
+)
+from crawl4ai.utils import perform_completion_with_backoff
+from crawl4ai.content_filter_strategy import (
+    PruningContentFilter,
+    BM25ContentFilter,
+    LLMContentFilter
+)
+from crawl4ai.markdown_generation_strategy import DefaultMarkdownGenerator
+from crawl4ai.content_scraping_strategy import LXMLWebScrapingStrategy
+
+from utils import (
+    TaskStatus,
+    FilterType,
+    get_base_url,
+    is_task_id,
+    should_cleanup_task,
+    decode_redis_hash
+)
+
+logger = logging.getLogger(__name__)
+
+async def handle_llm_qa(
+    url: str,
+    query: str,
+    config: dict
+) -> str:
+    """Process QA using LLM with crawled content as context."""
+    try:
+        # Extract base URL by finding last '?q=' occurrence
+        last_q_index = url.rfind('?q=')
+        if last_q_index != -1:
+            url = url[:last_q_index]
+
+        # Get markdown content
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(url)
+            if not result.success:
+                raise HTTPException(
+                    status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                    detail=result.error_message
+                )
+            content = result.markdown.fit_markdown
+
+        # Create prompt and get LLM response
+        prompt = f"""Use the following content as context to answer the question.
+    Content:
+    {content}
+
+    Question: {query}
+
+    Answer:"""
+
+        response = perform_completion_with_backoff(
+            provider=config["llm"]["provider"],
+            prompt_with_variables=prompt,
+            api_token=os.environ.get(config["llm"].get("api_key_env", ""))
+        )
+
+        return response.choices[0].message.content
+    except Exception as e:
+        logger.error(f"QA processing error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def process_llm_extraction(
+    redis: aioredis.Redis,
+    config: dict,
+    task_id: str,
+    url: str,
+    instruction: str,
+    schema: Optional[str] = None,
+    cache: str = "0"
+) -> None:
+    """Process LLM extraction in background."""
+    try:
+        # If config['llm'] has api_key then ignore the api_key_env
+        api_key = ""
+        if "api_key" in config["llm"]:
+            api_key = config["llm"]["api_key"]
+        else:
+            api_key = os.environ.get(config["llm"].get("api_key_env", None), "")
+        llm_strategy = LLMExtractionStrategy(
+            llm_config=LLMConfig(
+                provider=config["llm"]["provider"],
+                api_token=api_key
+            ),
+            instruction=instruction,
+            schema=json.loads(schema) if schema else None,
+        )
+
+        cache_mode = CacheMode.ENABLED if cache == "1" else CacheMode.WRITE_ONLY
+
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(
+                url=url,
+                config=CrawlerRunConfig(
+                    extraction_strategy=llm_strategy,
+                    scraping_strategy=LXMLWebScrapingStrategy(),
+                    cache_mode=cache_mode
+                )
+            )
+
+        if not result.success:
+            await redis.hset(f"task:{task_id}", mapping={
+                "status": TaskStatus.FAILED,
+                "error": result.error_message
+            })
+            return
+
+        try:
+            content = json.loads(result.extracted_content)
+        except json.JSONDecodeError:
+            content = result.extracted_content
+        await redis.hset(f"task:{task_id}", mapping={
+            "status": TaskStatus.COMPLETED,
+            "result": json.dumps(content)
+        })
+
+    except Exception as e:
+        logger.error(f"LLM extraction error: {str(e)}", exc_info=True)
+        await redis.hset(f"task:{task_id}", mapping={
+            "status": TaskStatus.FAILED,
+            "error": str(e)
+        })
+
+async def handle_markdown_request(
+    url: str,
+    filter_type: FilterType,
+    query: Optional[str] = None,
+    cache: str = "0",
+    config: Optional[dict] = None
+) -> str:
+    """Handle markdown generation requests."""
+    try:
+        decoded_url = unquote(url)
+        if not decoded_url.startswith(('http://', 'https://')):
+            decoded_url = 'https://' + decoded_url
+
+        if filter_type == FilterType.RAW:
+            md_generator = DefaultMarkdownGenerator()
+        else:
+            content_filter = {
+                FilterType.FIT: PruningContentFilter(),
+                FilterType.BM25: BM25ContentFilter(user_query=query or ""),
+                FilterType.LLM: LLMContentFilter(
+                    llm_config=LLMConfig(
+                        provider=config["llm"]["provider"],
+                        api_token=os.environ.get(config["llm"].get("api_key_env", None), ""),
+                    ),
+                    instruction=query or "Extract main content"
+                )
+            }[filter_type]
+            md_generator = DefaultMarkdownGenerator(content_filter=content_filter)
+
+        cache_mode = CacheMode.ENABLED if cache == "1" else CacheMode.WRITE_ONLY
+
+        async with AsyncWebCrawler() as crawler:
+            result = await crawler.arun(
+                url=decoded_url,
+                config=CrawlerRunConfig(
+                    markdown_generator=md_generator,
+                    scraping_strategy=LXMLWebScrapingStrategy(),
+                    cache_mode=cache_mode
+                )
+            )
+            
+            if not result.success:
+                raise HTTPException(
+                    status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+                    detail=result.error_message
+                )
+
+            return (result.markdown.raw_markdown 
+                   if filter_type == FilterType.RAW 
+                   else result.markdown.fit_markdown)
+
+    except Exception as e:
+        logger.error(f"Markdown error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def handle_llm_request(
+    redis: aioredis.Redis,
+    background_tasks: BackgroundTasks,
+    request: Request,
+    input_path: str,
+    query: Optional[str] = None,
+    schema: Optional[str] = None,
+    cache: str = "0",
+    config: Optional[dict] = None
+) -> JSONResponse:
+    """Handle LLM extraction requests."""
+    base_url = get_base_url(request)
+    
+    try:
+        if is_task_id(input_path):
+            return await handle_task_status(
+                redis, input_path, base_url
+            )
+
+        if not query:
+            return JSONResponse({
+                "message": "Please provide an instruction",
+                "_links": {
+                    "example": {
+                        "href": f"{base_url}/llm/{input_path}?q=Extract+main+content",
+                        "title": "Try this example"
+                    }
+                }
+            })
+
+        return await create_new_task(
+            redis,
+            background_tasks,
+            input_path,
+            query,
+            schema,
+            cache,
+            base_url,
+            config
+        )
+
+    except Exception as e:
+        logger.error(f"LLM endpoint error: {str(e)}", exc_info=True)
+        return JSONResponse({
+            "error": str(e),
+            "_links": {
+                "retry": {"href": str(request.url)}
+            }
+        }, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+async def handle_task_status(
+    redis: aioredis.Redis,
+    task_id: str,
+    base_url: str
+) -> JSONResponse:
+    """Handle task status check requests."""
+    task = await redis.hgetall(f"task:{task_id}")
+    if not task:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Task not found"
+        )
+
+    task = decode_redis_hash(task)
+    response = create_task_response(task, task_id, base_url)
+
+    if task["status"] in [TaskStatus.COMPLETED, TaskStatus.FAILED]:
+        if should_cleanup_task(task["created_at"]):
+            await redis.delete(f"task:{task_id}")
+
+    return JSONResponse(response)
+
+async def create_new_task(
+    redis: aioredis.Redis,
+    background_tasks: BackgroundTasks,
+    input_path: str,
+    query: str,
+    schema: Optional[str],
+    cache: str,
+    base_url: str,
+    config: dict
+) -> JSONResponse:
+    """Create and initialize a new task."""
+    decoded_url = unquote(input_path)
+    if not decoded_url.startswith(('http://', 'https://')):
+        decoded_url = 'https://' + decoded_url
+
+    from datetime import datetime
+    task_id = f"llm_{int(datetime.now().timestamp())}_{id(background_tasks)}"
+    
+    await redis.hset(f"task:{task_id}", mapping={
+        "status": TaskStatus.PROCESSING,
+        "created_at": datetime.now().isoformat(),
+        "url": decoded_url
+    })
+
+    background_tasks.add_task(
+        process_llm_extraction,
+        redis,
+        config,
+        task_id,
+        decoded_url,
+        query,
+        schema,
+        cache
+    )
+
+    return JSONResponse({
+        "task_id": task_id,
+        "status": TaskStatus.PROCESSING,
+        "url": decoded_url,
+        "_links": {
+            "self": {"href": f"{base_url}/llm/{task_id}"},
+            "status": {"href": f"{base_url}/llm/{task_id}"}
+        }
+    })
+
+def create_task_response(task: dict, task_id: str, base_url: str) -> dict:
+    """Create response for task status check."""
+    response = {
+        "task_id": task_id,
+        "status": task["status"],
+        "created_at": task["created_at"],
+        "url": task["url"],
+        "_links": {
+            "self": {"href": f"{base_url}/llm/{task_id}"},
+            "refresh": {"href": f"{base_url}/llm/{task_id}"}
+        }
+    }
+
+    if task["status"] == TaskStatus.COMPLETED:
+        response["result"] = json.loads(task["result"])
+    elif task["status"] == TaskStatus.FAILED:
+        response["error"] = task["error"]
+
+    return response
+
+async def stream_results(crawler: AsyncWebCrawler, results_gen: AsyncGenerator) -> AsyncGenerator[bytes, None]:
+    """Stream results with heartbeats and completion markers."""
+    import json
+    from utils import datetime_handler
+
+    try:
+        async for result in results_gen:
+            try:
+                result_dict = result.model_dump()
+                logger.info(f"Streaming result for {result_dict.get('url', 'unknown')}")
+                data = json.dumps(result_dict, default=datetime_handler) + "\n"
+                yield data.encode('utf-8')
+            except Exception as e:
+                logger.error(f"Serialization error: {e}")
+                error_response = {"error": str(e), "url": getattr(result, 'url', 'unknown')}
+                yield (json.dumps(error_response) + "\n").encode('utf-8')
+
+        yield json.dumps({"status": "completed"}).encode('utf-8')
+        
+    except asyncio.CancelledError:
+        logger.warning("Client disconnected during streaming")
+    finally:
+        try:
+            await crawler.close()
+        except Exception as e:
+            logger.error(f"Crawler cleanup error: {e}")
+
+async def handle_crawl_request(
+    urls: List[str],
+    browser_config: dict,
+    crawler_config: dict,
+    config: dict
+) -> dict:
+    """Handle non-streaming crawl requests."""
+    try:
+        browser_config = BrowserConfig.load(browser_config)
+        crawler_config = CrawlerRunConfig.load(crawler_config)
+
+        dispatcher = MemoryAdaptiveDispatcher(
+            memory_threshold_percent=config["crawler"]["memory_threshold_percent"],
+            rate_limiter=RateLimiter(
+                base_delay=tuple(config["crawler"]["rate_limiter"]["base_delay"])
+            )
+        )
+
+        async with AsyncWebCrawler(config=browser_config) as crawler:
+            results = await crawler.arun_many(
+                urls=urls,
+                config=crawler_config,
+                dispatcher=dispatcher
+            )
+            
+            return {
+                "success": True,
+                "results": [result.model_dump() for result in results]
+            }
+
+    except Exception as e:
+        logger.error(f"Crawl error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )
+
+async def handle_stream_crawl_request(
+    urls: List[str],
+    browser_config: dict,
+    crawler_config: dict,
+    config: dict
+) -> Tuple[AsyncWebCrawler, AsyncGenerator]:
+    """Handle streaming crawl requests."""
+    try:
+        browser_config = BrowserConfig.load(browser_config)
+        browser_config.verbose = True
+        crawler_config = CrawlerRunConfig.load(crawler_config)
+        crawler_config.scraping_strategy = LXMLWebScrapingStrategy()
+
+        dispatcher = MemoryAdaptiveDispatcher(
+            memory_threshold_percent=config["crawler"]["memory_threshold_percent"],
+            rate_limiter=RateLimiter(
+                base_delay=tuple(config["crawler"]["rate_limiter"]["base_delay"])
+            )
+        )
+
+        crawler = AsyncWebCrawler(config=browser_config)
+        await crawler.start()
+
+        results_gen = await crawler.arun_many(
+            urls=urls,
+            config=crawler_config,
+            dispatcher=dispatcher
+        )
+
+        return crawler, results_gen
+
+    except Exception as e:
+        if 'crawler' in locals():
+            await crawler.close()
+        logger.error(f"Stream crawl error: {str(e)}", exc_info=True)
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=str(e)
+        )

deploy/docker/auth.py

@@ -0,0 +1,55 @@
+import os
+from datetime import datetime, timedelta, timezone
+from typing import Dict, Optional
+from jwt import JWT, jwk_from_dict
+from jwt.utils import get_int_from_datetime
+from fastapi import Depends, HTTPException
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from pydantic import EmailStr
+from pydantic.main import BaseModel
+import base64
+
+instance = JWT()
+security = HTTPBearer(auto_error=False)
+SECRET_KEY = os.environ.get("SECRET_KEY", "mysecret")
+ACCESS_TOKEN_EXPIRE_MINUTES = 60
+
+def get_jwk_from_secret(secret: str):
+    """Convert a secret string into a JWK object."""
+    secret_bytes = secret.encode('utf-8')
+    b64_secret = base64.urlsafe_b64encode(secret_bytes).rstrip(b'=').decode('utf-8')
+    return jwk_from_dict({"kty": "oct", "k": b64_secret})
+
+def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
+    """Create a JWT access token with an expiration."""
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + (expires_delta or timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES))
+    to_encode.update({"exp": get_int_from_datetime(expire)})
+    signing_key = get_jwk_from_secret(SECRET_KEY)
+    return instance.encode(to_encode, signing_key, alg='HS256')
+
+def verify_token(credentials: HTTPAuthorizationCredentials = Depends(security)) -> Dict:
+    """Verify the JWT token from the Authorization header."""
+
+    if credentials is None:
+        return None
+    token = credentials.credentials
+    verifying_key = get_jwk_from_secret(SECRET_KEY)
+    try:
+        payload = instance.decode(token, verifying_key, do_time_check=True, algorithms='HS256')
+        return payload
+    except Exception:
+        raise HTTPException(status_code=401, detail="Invalid or expired token")
+
+
+def get_token_dependency(config: Dict):
+    """Return the token dependency if JWT is enabled, else a function that returns None."""
+
+    if config.get("security", {}).get("jwt_enabled", False):
+        return verify_token
+    else:
+        return lambda: None
+
+
+class TokenRequest(BaseModel):
+    email: EmailStr

deploy/docker/config.yml

@@ -0,0 +1,71 @@
+# Application Configuration
+app:
+  title: "Crawl4AI API"
+  version: "1.0.0"
+  host: "0.0.0.0"
+  port: 8020
+  reload: True
+  timeout_keep_alive: 300
+
+# Default LLM Configuration
+llm:
+  provider: "openai/gpt-4o-mini"
+  api_key_env: "OPENAI_API_KEY"
+  # api_key: sk-...  # If you pass the API key directly then api_key_env will be ignored
+
+# Redis Configuration
+redis:
+  host: "localhost"
+  port: 6379
+  db: 0
+  password: ""
+  ssl: False
+  ssl_cert_reqs: None
+  ssl_ca_certs: None
+  ssl_certfile: None
+  ssl_keyfile: None
+  ssl_cert_reqs: None
+  ssl_ca_certs: None
+  ssl_certfile: None
+  ssl_keyfile: None
+
+# Rate Limiting Configuration
+rate_limiting:
+  enabled: True
+  default_limit: "1000/minute"
+  trusted_proxies: []
+  storage_uri: "memory://"  # Use "redis://localhost:6379" for production
+
+# Security Configuration
+security:
+  enabled: false 
+  jwt_enabled: false 
+  https_redirect: false
+  trusted_hosts: ["*"]
+  headers:
+    x_content_type_options: "nosniff"
+    x_frame_options: "DENY"
+    content_security_policy: "default-src 'self'"
+    strict_transport_security: "max-age=63072000; includeSubDomains"
+
+# Crawler Configuration
+crawler:
+  memory_threshold_percent: 95.0
+  rate_limiter:
+    base_delay: [1.0, 2.0]
+  timeouts:
+    stream_init: 30.0  # Timeout for stream initialization
+    batch_process: 300.0  # Timeout for batch processing
+
+# Logging Configuration
+logging:
+  level: "INFO"
+  format: "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
+
+# Observability Configuration
+observability:
+  prometheus:
+    enabled: True
+    endpoint: "/metrics"
+  health_check:
+    endpoint: "/health"

deploy/docker/requirements.txt

@@ -0,0 +1,10 @@
+crawl4ai
+fastapi
+uvicorn
+gunicorn>=23.0.0
+slowapi>=0.1.9
+prometheus-fastapi-instrumentator>=7.0.2
+redis>=5.2.1
+jwt>=1.3.1
+dnspython>=2.7.0
+email-validator>=2.2.0

deploy/docker/server.py

@@ -0,0 +1,181 @@
+import os
+import sys
+import time
+from typing import List, Optional, Dict
+from fastapi import FastAPI, HTTPException, Request, Query, Path, Depends
+from fastapi.responses import StreamingResponse, RedirectResponse, PlainTextResponse, JSONResponse
+from fastapi.middleware.httpsredirect import HTTPSRedirectMiddleware
+from fastapi.middleware.trustedhost import TrustedHostMiddleware
+from pydantic import BaseModel, Field
+from slowapi import Limiter
+from slowapi.util import get_remote_address
+from prometheus_fastapi_instrumentator import Instrumentator
+from redis import asyncio as aioredis
+
+sys.path.append(os.path.dirname(os.path.realpath(__file__)))
+from utils import FilterType, load_config, setup_logging, verify_email_domain
+from api import (
+    handle_markdown_request,
+    handle_llm_qa,
+    handle_stream_crawl_request,
+    handle_crawl_request,
+    stream_results
+)
+from auth import create_access_token, get_token_dependency, TokenRequest  # Import from auth.py
+
+__version__ = "0.2.6"
+
+class CrawlRequest(BaseModel):
+    urls: List[str] = Field(min_length=1, max_length=100)
+    browser_config: Optional[Dict] = Field(default_factory=dict)
+    crawler_config: Optional[Dict] = Field(default_factory=dict)
+
+# Load configuration and setup
+config = load_config()
+setup_logging(config)
+
+# Initialize Redis
+redis = aioredis.from_url(config["redis"].get("uri", "redis://localhost"))
+
+# Initialize rate limiter
+limiter = Limiter(
+    key_func=get_remote_address,
+    default_limits=[config["rate_limiting"]["default_limit"]],
+    storage_uri=config["rate_limiting"]["storage_uri"]
+)
+
+app = FastAPI(
+    title=config["app"]["title"],
+    version=config["app"]["version"]
+)
+
+# Configure middleware
+def setup_security_middleware(app, config):
+    sec_config = config.get("security", {})
+    if sec_config.get("enabled", False):
+        if sec_config.get("https_redirect", False):
+            app.add_middleware(HTTPSRedirectMiddleware)
+        if sec_config.get("trusted_hosts", []) != ["*"]:
+            app.add_middleware(TrustedHostMiddleware, allowed_hosts=sec_config["trusted_hosts"])
+
+setup_security_middleware(app, config)
+
+# Prometheus instrumentation
+if config["observability"]["prometheus"]["enabled"]:
+    Instrumentator().instrument(app).expose(app)
+
+# Get token dependency based on config
+token_dependency = get_token_dependency(config)
+
+# Middleware for security headers
+@app.middleware("http")
+async def add_security_headers(request: Request, call_next):
+    response = await call_next(request)
+    if config["security"]["enabled"]:
+        response.headers.update(config["security"]["headers"])
+    return response
+
+# Token endpoint (always available, but usage depends on config)
+@app.post("/token")
+async def get_token(request_data: TokenRequest):
+    if not verify_email_domain(request_data.email):
+        raise HTTPException(status_code=400, detail="Invalid email domain")
+    token = create_access_token({"sub": request_data.email})
+    return {"email": request_data.email, "access_token": token, "token_type": "bearer"}
+
+# Endpoints with conditional auth
+@app.get("/md/{url:path}")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def get_markdown(
+    request: Request,
+    url: str,
+    f: FilterType = FilterType.FIT,
+    q: Optional[str] = None,
+    c: Optional[str] = "0",
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    result = await handle_markdown_request(url, f, q, c, config)
+    return PlainTextResponse(result)
+
+@app.get("/llm/{url:path}", description="URL should be without http/https prefix")
+async def llm_endpoint(
+    request: Request,
+    url: str = Path(...),
+    q: Optional[str] = Query(None),
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not q:
+        raise HTTPException(status_code=400, detail="Query parameter 'q' is required")
+    if not url.startswith(('http://', 'https://')):
+        url = 'https://' + url
+    try:
+        answer = await handle_llm_qa(url, q, config)
+        return JSONResponse({"answer": answer})
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+@app.get("/schema")
+async def get_schema():
+    from crawl4ai import BrowserConfig, CrawlerRunConfig
+    return {"browser": BrowserConfig().dump(), "crawler": CrawlerRunConfig().dump()}
+
+@app.get(config["observability"]["health_check"]["endpoint"])
+async def health():
+    return {"status": "ok", "timestamp": time.time(), "version": __version__}
+
+@app.get(config["observability"]["prometheus"]["endpoint"])
+async def metrics():
+    return RedirectResponse(url=config["observability"]["prometheus"]["endpoint"])
+
+@app.post("/crawl")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def crawl(
+    request: Request,
+    crawl_request: CrawlRequest,
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not crawl_request.urls:
+        raise HTTPException(status_code=400, detail="At least one URL required")
+    
+    results = await handle_crawl_request(
+        urls=crawl_request.urls,
+        browser_config=crawl_request.browser_config,
+        crawler_config=crawl_request.crawler_config,
+        config=config
+    )
+
+    return JSONResponse(results)
+
+
+@app.post("/crawl/stream")
+@limiter.limit(config["rate_limiting"]["default_limit"])
+async def crawl_stream(
+    request: Request,
+    crawl_request: CrawlRequest,
+    token_data: Optional[Dict] = Depends(token_dependency)
+):
+    if not crawl_request.urls:
+        raise HTTPException(status_code=400, detail="At least one URL required")
+
+    crawler, results_gen = await handle_stream_crawl_request(
+        urls=crawl_request.urls,
+        browser_config=crawl_request.browser_config,
+        crawler_config=crawl_request.crawler_config,
+        config=config
+    )
+
+    return StreamingResponse(
+        stream_results(crawler, results_gen),
+        media_type='application/x-ndjson',
+        headers={'Cache-Control': 'no-cache', 'Connection': 'keep-alive', 'X-Stream-Status': 'active'}
+    )
+
+if __name__ == "__main__":
+    import uvicorn
+    uvicorn.run(
+        "server:app",
+        host=config["app"]["host"],
+        port=config["app"]["port"],
+        reload=config["app"]["reload"],
+        timeout_keep_alive=config["app"]["timeout_keep_alive"]
+    )

deploy/docker/supervisord.conf

@@ -0,0 +1,12 @@
+[supervisord]
+nodaemon=true
+
+[program:redis]
+command=redis-server
+autorestart=true
+priority=10
+
+[program:gunicorn]
+command=gunicorn --bind 0.0.0.0:8000 --workers 4 --threads 2 --timeout 300 --graceful-timeout 60 --keep-alive 65 --log-level debug --worker-class uvicorn.workers.UvicornWorker --max-requests 1000 --max-requests-jitter 50 server:app
+autorestart=true
+priority=20

deploy/docker/utils.py

@@ -0,0 +1,66 @@
+import dns.resolver
+import logging
+import yaml
+from datetime import datetime
+from enum import Enum
+from pathlib import Path
+from fastapi import Request
+from typing import Dict, Optional
+
+class TaskStatus(str, Enum):
+    PROCESSING = "processing"
+    FAILED = "failed"
+    COMPLETED = "completed"
+
+class FilterType(str, Enum):
+    RAW = "raw"
+    FIT = "fit"
+    BM25 = "bm25"
+    LLM = "llm"
+
+def load_config() -> Dict:
+    """Load and return application configuration."""
+    config_path = Path(__file__).parent / "config.yml"
+    with open(config_path, "r") as config_file:
+        return yaml.safe_load(config_file)
+
+def setup_logging(config: Dict) -> None:
+    """Configure application logging."""
+    logging.basicConfig(
+        level=config["logging"]["level"],
+        format=config["logging"]["format"]
+    )
+
+def get_base_url(request: Request) -> str:
+    """Get base URL including scheme and host."""
+    return f"{request.url.scheme}://{request.url.netloc}"
+
+def is_task_id(value: str) -> bool:
+    """Check if the value matches task ID pattern."""
+    return value.startswith("llm_") and "_" in value
+
+def datetime_handler(obj: any) -> Optional[str]:
+    """Handle datetime serialization for JSON."""
+    if hasattr(obj, 'isoformat'):
+        return obj.isoformat()
+    raise TypeError(f"Object of type {type(obj)} is not JSON serializable")
+
+def should_cleanup_task(created_at: str) -> bool:
+    """Check if task should be cleaned up based on creation time."""
+    created = datetime.fromisoformat(created_at)
+    return (datetime.now() - created).total_seconds() > 3600
+
+def decode_redis_hash(hash_data: Dict[bytes, bytes]) -> Dict[str, str]:
+    """Decode Redis hash data from bytes to strings."""
+    return {k.decode('utf-8'): v.decode('utf-8') for k, v in hash_data.items()}
+
+
+
+def verify_email_domain(email: str) -> bool:
+    try:
+        domain = email.split('@')[1]
+        # Try to resolve MX records for the domain.
+        records = dns.resolver.resolve(domain, 'MX')
+        return True if records else False
+    except Exception as e:
+        return False

deploy/gcloud-function/Dockerfile

@@ -0,0 +1,63 @@
+FROM --platform=linux/amd64 python:3.10-slim
+
+# Install system dependencies required for Chromium and Git
+RUN apt-get update && apt-get install -y \
+    python3-dev \
+    pkg-config \
+    libjpeg-dev \
+    gcc \
+    build-essential \
+    libnss3 \
+    libnspr4 \
+    libatk1.0-0 \
+    libatk-bridge2.0-0 \
+    libcups2 \
+    libdrm2 \
+    libxkbcommon0 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxfixes3 \
+    libxrandr2 \
+    libgbm1 \
+    libasound2 \
+    libpango-1.0-0 \
+    libcairo2 \
+    procps \
+    git \
+    socat \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+# Make a directory for crawl4ai call it crawl4ai_repo
+# RUN mkdir crawl4ai_repo
+
+# # Clone Crawl4ai from the next branch and install it
+# RUN git clone --branch next https://github.com/unclecode/crawl4ai.git ./crawl4ai_repo \
+#     && cd crawl4ai_repo \
+#     && pip install . \
+#     && cd .. \
+#     && rm -rf crawl4ai_repo
+
+RUN python3 -m venv /app/venv
+ENV PATH="/app/venv/bin:$PATH"
+# RUN pip install git+https://github.com/unclecode/crawl4ai.git@next
+   
+# Copy requirements and install remaining dependencies
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+# Copy application files
+COPY resources /app/resources
+COPY main.py .
+COPY start.sh .
+
+# Set permissions for Chrome binary and start script
+RUN chmod +x /app/resources/chrome/headless_shell && \
+    chmod -R 755 /app/resources/chrome && \
+    chmod +x start.sh
+
+ENV FUNCTION_TARGET=crawl
+EXPOSE 8080 9223
+
+CMD ["/app/start.sh"]

deploy/gcloud-function/config.yml

@@ -0,0 +1,8 @@
+project_id: PROJECT_ID
+region: REGION_NAME
+artifact_repo: ARTIFACT_REPO_NAME
+function_name: FUNCTION_NAME
+memory: "2048MB"
+timeout: "540s"
+local_image: "gcr.io/ARTIFACT_REPO_NAME/crawl4ai:latest"
+test_query_url: "https://example.com"

deploy/gcloud-function/deploy.py

@@ -0,0 +1,187 @@
+#!/usr/bin/env python3
+import argparse
+import subprocess
+import sys
+import yaml
+import requests
+
+def run_command(cmd, explanation, require_confirm=True, allow_already_exists=False):
+    print("\n=== {} ===".format(explanation))
+    if require_confirm:
+        input("Press Enter to run: [{}]\n".format(cmd))
+    print("Running: {}".format(cmd))
+    result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
+    if result.returncode != 0:
+        if allow_already_exists and "ALREADY_EXISTS" in result.stderr:
+            print("Repository already exists, skipping creation.")
+            return ""
+        print("Error:\n{}".format(result.stderr))
+        sys.exit(1)
+    out = result.stdout.strip()
+    if out:
+        print("Output:\n{}".format(out))
+    return out
+
+def load_config():
+    try:
+        with open("config.yml", "r") as f:
+            config = yaml.safe_load(f)
+    except Exception as e:
+        print("Failed to load config.yml: {}".format(e))
+        sys.exit(1)
+    required = ["project_id", "region", "artifact_repo", "function_name", "local_image"]
+    for key in required:
+        if key not in config or not config[key]:
+            print("Missing required config parameter: {}".format(key))
+            sys.exit(1)
+    return config
+
+def deploy_function(config):
+    project_id     = config["project_id"]
+    region         = config["region"]
+    artifact_repo  = config["artifact_repo"]
+    function_name  = config["function_name"]
+    memory         = config.get("memory", "2048MB")
+    timeout        = config.get("timeout", "540s")
+    local_image    = config["local_image"]
+    test_query_url = config.get("test_query_url", "https://example.com")
+
+    # Repository image format: "<region>-docker.pkg.dev/<project_id>/<artifact_repo>/<function_name>:latest"
+    repo_image = f"{region}-docker.pkg.dev/{project_id}/{artifact_repo}/{function_name}:latest"
+
+    # 1. Create Artifact Registry repository (skip if exists)
+    cmd = f"gcloud artifacts repositories create {artifact_repo} --repository-format=docker --location={region} --project={project_id}"
+    run_command(cmd, "Creating Artifact Registry repository (if it doesn't exist)", allow_already_exists=True)
+
+    # 2. Tag the local Docker image with the repository image name
+    cmd = f"docker tag {local_image} {repo_image}"
+    run_command(cmd, "Tagging Docker image for Artifact Registry")
+
+    # 3. Authenticate Docker to Artifact Registry
+    cmd = f"gcloud auth configure-docker {region}-docker.pkg.dev"
+    run_command(cmd, "Authenticating Docker to Artifact Registry")
+
+    # 4. Push the tagged Docker image to Artifact Registry
+    cmd = f"docker push {repo_image}"
+    run_command(cmd, "Pushing Docker image to Artifact Registry")
+
+    # 5. Deploy the Cloud Function using the custom container
+    cmd = (
+        f"gcloud beta functions deploy {function_name} "
+        f"--gen2 "
+        f"--runtime=python310 "
+        f"--entry-point=crawl "
+        f"--region={region} "
+        f"--docker-repository={region}-docker.pkg.dev/{project_id}/{artifact_repo} "
+        f"--trigger-http "
+        f"--memory={memory} "
+        f"--timeout={timeout} "
+        f"--project={project_id}"
+    )
+    run_command(cmd, "Deploying Cloud Function using custom container")
+
+    # 6. Set the Cloud Function to allow public (unauthenticated) invocations
+    cmd = (
+        f"gcloud functions add-iam-policy-binding {function_name} "
+        f"--region={region} "
+        f"--member='allUsers' "
+        f"--role='roles/cloudfunctions.invoker' "
+        f"--project={project_id}"
+        f"--quiet"
+    )
+    run_command(cmd, "Setting Cloud Function IAM to allow public invocations")
+
+    # 7. Retrieve the deployed Cloud Function URL
+    cmd = (
+        f"gcloud functions describe {function_name} "
+        f"--region={region} "
+        f"--project={project_id} "
+        f"--format='value(serviceConfig.uri)'"
+    )
+    deployed_url = run_command(cmd, "Extracting deployed Cloud Function URL", require_confirm=False)
+    print("\nDeployed URL: {}\n".format(deployed_url))
+
+    # 8. Test the deployed function
+    test_url = f"{deployed_url}?url={test_query_url}"
+    print("Testing function with: {}".format(test_url))
+    try:
+        response = requests.get(test_url)
+        print("Response status: {}".format(response.status_code))
+        print("Response body:\n{}".format(response.text))
+        if response.status_code == 200:
+            print("Test successful!")
+        else:
+            print("Non-200 response; check function logs.")
+    except Exception as e:
+        print("Test request error: {}".format(e))
+        sys.exit(1)
+
+    # 9. Final usage help
+    print("\nDeployment complete!")
+    print("Invoke your function with:")
+    print(f"curl '{deployed_url}?url={test_query_url}'")
+    print("For further instructions, refer to your documentation.")
+
+def delete_function(config):
+    project_id    = config["project_id"]
+    region        = config["region"]
+    function_name = config["function_name"]
+    cmd = f"gcloud functions delete {function_name} --region={region} --project={project_id} --quiet"
+    run_command(cmd, "Deleting Cloud Function")
+
+def describe_function(config):
+    project_id    = config["project_id"]
+    region        = config["region"]
+    function_name = config["function_name"]
+    cmd = (
+        f"gcloud functions describe {function_name} "
+        f"--region={region} "
+        f"--project={project_id} "
+        f"--format='value(serviceConfig.uri)'"
+    )
+    deployed_url = run_command(cmd, "Describing Cloud Function to extract URL", require_confirm=False)
+    print("\nCloud Function URL: {}\n".format(deployed_url))
+
+def clear_all(config):
+    print("\n=== CLEAR ALL RESOURCES ===")
+    project_id    = config["project_id"]
+    region        = config["region"]
+    artifact_repo = config["artifact_repo"]
+
+    confirm = input("WARNING: This will DELETE the Cloud Function and the Artifact Registry repository. Are you sure? (y/N): ")
+    if confirm.lower() != "y":
+        print("Aborting clear operation.")
+        sys.exit(0)
+
+    # Delete the Cloud Function
+    delete_function(config)
+    # Delete the Artifact Registry repository
+    cmd = f"gcloud artifacts repositories delete {artifact_repo} --location={region} --project={project_id} --quiet"
+    run_command(cmd, "Deleting Artifact Registry repository", require_confirm=False)
+    print("All resources cleared.")
+
+def main():
+    parser = argparse.ArgumentParser(description="Deploy, delete, describe, or clear Cloud Function resources using config.yml")
+    subparsers = parser.add_subparsers(dest="command", required=True)
+
+    subparsers.add_parser("deploy", help="Deploy the Cloud Function")
+    subparsers.add_parser("delete", help="Delete the deployed Cloud Function")
+    subparsers.add_parser("describe", help="Describe the Cloud Function and return its URL")
+    subparsers.add_parser("clear", help="Delete the Cloud Function and Artifact Registry repository")
+
+    args = parser.parse_args()
+    config = load_config()
+
+    if args.command == "deploy":
+        deploy_function(config)
+    elif args.command == "delete":
+        delete_function(config)
+    elif args.command == "describe":
+        describe_function(config)
+    elif args.command == "clear":
+        clear_all(config)
+    else:
+        parser.print_help()
+
+if __name__ == "__main__":
+    main()

deploy/gcloud-function/guide.md

@@ -0,0 +1,204 @@
+# Deploying Crawl4ai on Google Cloud Functions
+
+This guide explains how to deploy **Crawl4ai**—an open‑source web crawler library—on Google Cloud Functions Gen2 using a custom container. We assume your project folder already includes:
+
+- **Dockerfile:** Builds your container image (which installs Crawl4ai from its Git repository).
+- **start.sh:** Activates your virtual environment and starts the function (using the Functions Framework).
+- **main.py:** Contains your function logic with the entry point `crawl` (and imports Crawl4ai).
+
+The guide is divided into two parts:
+1. Manual deployment steps (using CLI commands)
+2. Automated deployment using a Python script (`deploy.py`)
+
+---
+
+## Part 1: Manual Deployment Process
+
+### Prerequisites
+
+- **Google Cloud Project:** Ensure your project is active and billing is enabled.
+- **Google Cloud CLI & Docker:** Installed and configured on your local machine.
+- **Permissions:** You must have rights to create Cloud Functions and Artifact Registry repositories.
+- **Files:** Your Dockerfile, start.sh, and main.py should be in the same directory.
+
+### Step 1: Build Your Docker Image
+
+Your Dockerfile packages Crawl4ai along with all its dependencies. Build your image with:
+
+```bash
+docker build -t gcr.io/<PROJECT_ID>/<FUNCTION_NAME>:latest .
+```
+
+Replace `<PROJECT_ID>` with your Google Cloud project ID and `<FUNCTION_NAME>` with your chosen function name (for example, `crawl4ai-t1`).
+
+### Step 2: Create an Artifact Registry Repository
+
+Cloud Functions Gen2 requires your custom container image to reside in an Artifact Registry repository. Create one by running:
+
+```bash
+gcloud artifacts repositories create <ARTIFACT_REPO> \
+  --repository-format=docker \
+  --location=<REGION> \
+  --project=<PROJECT_ID>
+```
+
+Replace `<ARTIFACT_REPO>` (for example, `crawl4ai`) and `<REGION>` (for example, `asia-east1`).  
+> **Note:** If you receive an `ALREADY_EXISTS` error, the repository is already created; simply proceed to the next step.
+
+### Step 3: Tag Your Docker Image
+
+Tag your locally built Docker image so it matches the Artifact Registry format:
+
+```bash
+docker tag gcr.io/<PROJECT_ID>/<FUNCTION_NAME>:latest <REGION>-docker.pkg.dev/<PROJECT_ID>/<ARTIFACT_REPO>/<FUNCTION_NAME>:latest
+```
+
+This step “renames” the image so you can push it to your repository.
+
+### Step 4: Authenticate Docker to Artifact Registry
+
+Configure Docker authentication to the Artifact Registry:
+
+```bash
+gcloud auth configure-docker <REGION>-docker.pkg.dev
+```
+
+This ensures Docker can securely push images to your registry using your Cloud credentials.
+
+### Step 5: Push the Docker Image
+
+Push the tagged image to Artifact Registry:
+
+```bash
+docker push <REGION>-docker.pkg.dev/<PROJECT_ID>/<ARTIFACT_REPO>/<FUNCTION_NAME>:latest
+```
+
+Once complete, your container image (with Crawl4ai installed) is hosted in Artifact Registry.
+
+### Step 6: Deploy the Cloud Function
+
+Deploy your function using the custom container image. Run:
+
+```bash
+gcloud beta functions deploy <FUNCTION_NAME> \
+  --gen2 \
+  --region=<REGION> \
+  --docker-repository=<REGION>-docker.pkg.dev/<PROJECT_ID>/<ARTIFACT_REPO> \
+  --trigger-http \
+  --memory=2048MB \
+  --timeout=540s \
+  --project=<PROJECT_ID>
+```
+
+This command tells Cloud Functions Gen2 to pull your container image from Artifact Registry and deploy it. Make sure your main.py defines the `crawl` entry point.
+
+### Step 7: Make the Function Public
+
+To allow external (unauthenticated) access, update the function’s IAM policy:
+
+```bash
+gcloud functions add-iam-policy-binding <FUNCTION_NAME> \
+  --region=<REGION> \
+  --member="allUsers" \
+  --role="roles/cloudfunctions.invoker" \
+  --project=<PROJECT_ID> \
+  --quiet
+```
+
+Using the `--quiet` flag ensures the command runs non‑interactively so the policy is applied immediately.
+
+### Step 8: Retrieve and Test Your Function URL
+
+Get the URL for your deployed function:
+
+```bash
+gcloud functions describe <FUNCTION_NAME> \
+  --region=<REGION> \
+  --project=<PROJECT_ID> \
+  --format='value(serviceConfig.uri)'
+```
+
+Test your deployment with a sample GET request (using curl or your browser):
+
+```bash
+curl "<FUNCTION_URL>?url=https://example.com"
+```
+
+Replace `<FUNCTION_URL>` with the output URL from the previous command. A successful test (HTTP status 200) means Crawl4ai is running on Cloud Functions.
+
+---
+
+## Part 2: Automated Deployment with deploy.py
+
+For a more streamlined process, use the provided `deploy.py` script. This Python script automates the manual steps, prompting you to confirm key actions and providing detailed logs throughout the process.
+
+### What deploy.py Does:
+
+- **Reads Parameters:** It loads a `config.yml` file containing all necessary parameters such as `project_id`, `region`, `artifact_repo`, `function_name`, `local_image`, etc.
+- **Creates/Skips Repository:** It creates the Artifact Registry repository (or skips if it already exists).
+- **Tags & Pushes:** It tags your local Docker image and pushes it to the Artifact Registry.
+- **Deploys the Function:** It deploys the Cloud Function with your custom container.
+- **Updates IAM:** It sets the IAM policy to allow public access (using the `--quiet` flag).
+- **Tests the Deployment:** It extracts the deployed URL and performs a test request.
+- **Additional Commands:** You can also use subcommands in the script to delete or describe the deployed function, or even clear all resources.
+
+### Example config.yml
+
+Create a `config.yml` file in the same folder as your Dockerfile. An example configuration:
+
+```yaml
+project_id: your-project-id
+region: asia-east1
+artifact_repo: crawl4ai
+function_name: crawl4ai-t1
+memory: "2048MB"
+timeout: "540s"
+local_image: "gcr.io/your-project-id/crawl4ai-t1:latest"
+test_query_url: "https://example.com"
+```
+
+### How to Use deploy.py
+
+- **Deploy the Function:**
+
+  ```bash
+  python deploy.py deploy
+  ```
+
+  The script will guide you through each step, display the output, and ask for confirmation before executing critical commands.
+
+- **Describe the Function:**
+
+  If you forget the function URL and want to retrieve it later:
+
+  ```bash
+  python deploy.py describe
+  ```
+
+- **Delete the Function:**
+
+  To remove just the Cloud Function:
+
+  ```bash
+  python deploy.py delete
+  ```
+
+- **Clear All Resources:**
+
+  To delete both the Cloud Function and the Artifact Registry repository:
+
+  ```bash
+  python deploy.py clear
+  ```
+
+---
+
+## Conclusion
+
+This guide has walked you through two deployment methods for Crawl4ai on Google Cloud Functions Gen2:
+
+1. **Manual Deployment:** Building your Docker image, pushing it to Artifact Registry, deploying the Cloud Function, and setting up IAM.
+2. **Automated Deployment:** Using `deploy.py` with a configuration file to handle the entire process interactively.
+
+By following these instructions, you can deploy, test, and manage your Crawl4ai-based Cloud Function with ease. Enjoy using Crawl4ai in your cloud environment!
+

deploy/gcloud-function/main.py

@@ -0,0 +1,158 @@
+# Cleanup Chrome process on module unload
+import atexit
+import asyncio
+import logging
+import functions_framework
+from flask import jsonify, Request
+import os
+import sys
+import time
+import subprocess
+import signal
+import requests
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+logger.info(f"Python version: {sys.version}")
+logger.info(f"Python path: {sys.path}")
+
+# Try to find where crawl4ai is coming from
+try:
+    import crawl4ai
+    logger.info(f"Crawl4AI module location: {crawl4ai.__file__}")
+    logger.info(f"Contents of crawl4ai: {dir(crawl4ai)}")
+except ImportError:
+    logger.error("Crawl4AI module not found")
+
+# Now attempt the import
+from crawl4ai import AsyncWebCrawler, BrowserConfig, CrawlerRunConfig, CacheMode, CrawlResult
+
+# Configure logging
+logging.basicConfig(level=logging.DEBUG)
+logger = logging.getLogger(__name__)
+
+# Paths and constants
+FUNCTION_DIR = os.path.dirname(os.path.realpath(__file__))
+CHROME_BINARY = os.path.join(FUNCTION_DIR, "resources/chrome/headless_shell")
+CDP_PORT = 9222
+
+def start_chrome():
+    """Start Chrome process synchronously with exponential backoff."""
+    logger.debug("Starting Chrome process...")
+    chrome_args = [
+        CHROME_BINARY,
+        f"--remote-debugging-port={CDP_PORT}",
+        "--remote-debugging-address=0.0.0.0",
+        "--no-sandbox",
+        "--disable-setuid-sandbox",
+        "--headless=new",
+        "--disable-gpu",
+        "--disable-dev-shm-usage",
+        "--no-zygote",
+        "--single-process",
+        "--disable-features=site-per-process",
+        "--no-first-run",
+        "--disable-extensions"
+    ]
+    
+    process = subprocess.Popen(
+        chrome_args,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        preexec_fn=os.setsid
+    )
+    
+    logger.debug(f"Chrome process started with PID: {process.pid}")
+    
+    # Wait for CDP endpoint with exponential backoff
+    wait_time = 1  # Start with 1 second
+    max_wait_time = 16  # Cap at 16 seconds per retry
+    max_attempts = 10  # Total attempts
+    for attempt in range(max_attempts):
+        try:
+            response = requests.get(f"http://127.0.0.1:{CDP_PORT}/json/version", timeout=2)
+            if response.status_code == 200:
+                # Get ws URL from response
+                ws_url = response.json()['webSocketDebuggerUrl']
+                logger.debug("Chrome CDP is ready")
+                logger.debug(f"CDP URL: {ws_url}")
+                return process
+        except requests.exceptions.ConnectionError:
+            logger.debug(f"Waiting for CDP endpoint (attempt {attempt + 1}/{max_attempts}), retrying in {wait_time} seconds")
+            time.sleep(wait_time)
+            wait_time = min(wait_time * 2, max_wait_time)  # Double wait time, up to max
+    
+    # If we get here, all retries failed
+    stdout, stderr = process.communicate()  # Get output for debugging
+    logger.error(f"Chrome stdout: {stdout.decode()}")
+    logger.error(f"Chrome stderr: {stderr.decode()}")
+    raise Exception("Chrome CDP endpoint failed to start after retries")
+
+async def fetch_with_crawl4ai(url: str) -> dict:
+    """Fetch page content using Crawl4ai and return the result object"""
+    # Get CDP URL from the running Chrome instance
+    version_response = requests.get(f'http://localhost:{CDP_PORT}/json/version')
+    cdp_url = version_response.json()['webSocketDebuggerUrl']
+    
+    # Configure and run Crawl4ai
+    browser_config = BrowserConfig(cdp_url=cdp_url, use_managed_browser=True)
+    async with AsyncWebCrawler(config=browser_config) as crawler:
+        crawler_config = CrawlerRunConfig(
+            cache_mode=CacheMode.BYPASS,
+        )
+        result : CrawlResult = await crawler.arun(
+            url=url, config=crawler_config
+        )
+        return result.model_dump()  # Convert Pydantic model to dict for JSON response
+
+# Start Chrome when the module loads
+logger.info("Starting Chrome process on module load")
+chrome_process = start_chrome()
+
+@functions_framework.http
+def crawl(request: Request):
+    """HTTP Cloud Function to fetch web content using Crawl4ai"""
+    try:
+        url = request.args.get('url')
+        if not url:
+            return jsonify({'error': 'URL parameter is required', 'status': 400}), 400
+        
+        # Create and run an asyncio event loop
+        loop = asyncio.new_event_loop()
+        asyncio.set_event_loop(loop)
+        
+        try:
+            result = loop.run_until_complete(
+                asyncio.wait_for(fetch_with_crawl4ai(url), timeout=10.0)
+            )
+            return jsonify({
+                'status': 200,
+                'data': result
+            })
+        finally:
+            loop.close()
+            
+    except Exception as e:
+        error_msg = f"Unexpected error: {str(e)}"
+        logger.error(error_msg, exc_info=True)
+        return jsonify({
+            'error': error_msg,
+            'status': 500,
+            'details': {
+                'error_type': type(e).__name__,
+                'stack_trace': str(e),
+                'chrome_running': chrome_process.poll() is None if chrome_process else False
+            }
+        }), 500
+
+
+@atexit.register
+def cleanup():
+    """Cleanup Chrome process on shutdown"""
+    if chrome_process and chrome_process.poll() is None:
+        try:
+            os.killpg(os.getpgid(chrome_process.pid), signal.SIGTERM)
+            logger.info("Chrome process terminated")
+        except Exception as e:
+            logger.error(f"Failed to terminate Chrome process: {e}")

deploy/gcloud-function/requirements.txt

@@ -0,0 +1,5 @@
+functions-framework==3.*
+flask==2.3.3
+requests==2.31.0
+websockets==12.0
+git+https://github.com/unclecode/crawl4ai.git@next

deploy/gcloud-function/resources/chrome/fonts.conf

@@ -0,0 +1,10 @@
+<?xml version="1.0" ?>
+<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
+<fontconfig>
+  <dir>/var/task/.fonts</dir>
+  <dir>/var/task/fonts</dir>
+  <dir>/opt/fonts</dir>
+  <dir>/tmp/fonts</dir>
+  <cachedir>/tmp/fonts-cache/</cachedir>
+  <config></config>
+</fontconfig>