diff --git a/crawl4ai/__init__.py b/crawl4ai/__init__.py
index 482afdd7..7f284323 100644
--- a/crawl4ai/__init__.py
+++ b/crawl4ai/__init__.py
@@ -16,7 +16,7 @@ from .extraction_strategy import (
 )
 from .chunking_strategy import ChunkingStrategy, RegexChunking
 from .markdown_generation_strategy import DefaultMarkdownGenerator
-from .content_filter_strategy import PruningContentFilter, BM25ContentFilter, LLMContentFilter
+from .content_filter_strategy import PruningContentFilter, BM25ContentFilter, LLMContentFilter, RelevantContentFilter
 from .models import CrawlResult, MarkdownGenerationResult
 from .async_dispatcher import (
     MemoryAdaptiveDispatcher,
@@ -44,6 +44,7 @@ __all__ = [
     "ChunkingStrategy",
     "RegexChunking",
     "DefaultMarkdownGenerator",
+    "RelevantContentFilter",
     "PruningContentFilter",
     "BM25ContentFilter",
     "LLMContentFilter",
diff --git a/crawl4ai/__version__.py b/crawl4ai/__version__.py
index a0acc761..3274435a 100644
--- a/crawl4ai/__version__.py
+++ b/crawl4ai/__version__.py
@@ -1,2 +1,2 @@
 # crawl4ai/_version.py
-__version__ = "0.4.3b2"
+__version__ = "0.4.3b3"
diff --git a/crawl4ai/async_configs.py b/crawl4ai/async_configs.py
index b0813abe..c1404026 100644
--- a/crawl4ai/async_configs.py
+++ b/crawl4ai/async_configs.py
@@ -6,12 +6,15 @@ from .config import (
     IMAGE_SCORE_THRESHOLD,
     SOCIAL_MEDIA_DOMAINS,
 )
+
 from .user_agent_generator import UserAgentGenerator
 from .extraction_strategy import ExtractionStrategy
 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 .cache_context import CacheMode
 
 
 class BrowserConfig:
@@ -81,13 +84,13 @@ class BrowserConfig:
         user_data_dir: str = None,
         chrome_channel: str = "chromium",
         channel: str = "chromium",
-        proxy: Optional[str] = None,
+        proxy: str = None,
         proxy_config: dict = None,
         viewport_width: int = 1080,
         viewport_height: int = 600,
         accept_downloads: bool = False,
         downloads_path: str = None,
-        storage_state=None,
+        storage_state : Union[str, dict, None]=None,
         ignore_https_errors: bool = True,
         java_script_enabled: bool = True,
         sleep_on_close: bool = False,
@@ -382,7 +385,7 @@ class CrawlerRunConfig:
         extraction_strategy: ExtractionStrategy = None,
         chunking_strategy: ChunkingStrategy = RegexChunking(),
         markdown_generator: MarkdownGenerationStrategy = None,
-        content_filter=None,
+        content_filter : RelevantContentFilter = None,
         only_text: bool = False,
         css_selector: str = None,
         excluded_tags: list = None,
@@ -396,7 +399,7 @@ class CrawlerRunConfig:
         # SSL Parameters
         fetch_ssl_certificate: bool = False,
         # Caching Parameters
-        cache_mode=None,
+        cache_mode: CacheMode =None,
         session_id: str = None,
         bypass_cache: bool = False,
         disable_cache: bool = False,
diff --git a/crawl4ai/utils.scraping.py b/crawl4ai/utils.scraping.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/mkdocs.yml b/mkdocs.yml
index 255492e3..16f44b05 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -1,4 +1,4 @@
-site_name: Crawl4AI Documentation
+site_name: Crawl4AI Documentation (v0.4.3b2)
 site_description:  🚀🤖 Crawl4AI, Open-source LLM-Friendly Web Crawler & Scraper
 site_url: https://docs.crawl4ai.com
 repo_url: https://github.com/unclecode/crawl4ai
@@ -52,6 +52,11 @@ nav:
 theme:
   name: 'terminal'
   palette: 'dark'
+  icon:
+    repo: fontawesome/brands/github
+
+plugins:
+  - search
 
 markdown_extensions:
   - pymdownx.highlight:
@@ -64,6 +69,9 @@ markdown_extensions:
   - attr_list
   - tables
 
+extra:
+  version: !ENV [CRAWL4AI_VERSION, 'development']
+
 extra_css:
   - assets/styles.css
   - assets/highlight.css
@@ -72,3 +80,4 @@ extra_css:
 extra_javascript:
   - assets/highlight.min.js
   - assets/highlight_init.js
+  - https://buttons.github.io/buttons.js
\ No newline at end of file