feat: Add screenshot functionality to crawl_urls

The code changes in this commit add the `screenshot` parameter to the `crawl_urls` function in `main.py`. This allows users to specify whether they want to take a screenshot of the page during the crawling process. The default value is `False`.

This commit message follows the established convention of starting with a type (feat for feature) and providing a concise and descriptive summary of the changes made.

README.md

@@ -1,4 +1,4 @@
-# Crawl4AI v0.2.2 🕷️🤖
+# Crawl4AI v0.2.3 🕷️🤖
 
 [![GitHub Stars](https://img.shields.io/github/stars/unclecode/crawl4ai?style=social)](https://github.com/unclecode/crawl4ai/stargazers)
 [![GitHub Forks](https://img.shields.io/github/forks/unclecode/crawl4ai?style=social)](https://github.com/unclecode/crawl4ai/network/members)
@@ -12,6 +12,10 @@ Crawl4AI has one clear task: to simplify crawling and extract useful information
 
 ## Recent Changes 
 
+### v0.2.3
+- 🎨 Extract and return all media tags (Images, Audio, and Video).
+- 🖼️ Take screenshots of the page.
+
 ### v0.2.2
 - Support multiple JS scripts
 - Fixed some of bugs

crawl4ai/crawler_strategy.py

@@ -7,6 +7,15 @@ from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.chrome.options import Options
 from selenium.common.exceptions import InvalidArgumentException
 import logging
+import base64
+from PIL import Image, ImageDraw, ImageFont
+from io import BytesIO
+from typing import List
+import requests
+import os
+from pathlib import Path
+from .utils import wrap_text
+
 logger = logging.getLogger('selenium.webdriver.remote.remote_connection')
 logger.setLevel(logging.WARNING)
 
@@ -25,15 +34,16 @@ driver_finder_logger = logging.getLogger('selenium.webdriver.common.driver_finde
 driver_finder_logger.setLevel(logging.WARNING)
 
 
-from typing import List
+
-import requests
-import os
-from pathlib import Path
 
 class CrawlerStrategy(ABC):
     @abstractmethod
     def crawl(self, url: str, **kwargs) -> str:
         pass
+    
+    @abstractmethod
+    def take_screenshot(self, save_path: str):
+        pass
 
 class CloudCrawlerStrategy(CrawlerStrategy):
     def __init__(self, use_cached_html = False):
@@ -132,5 +142,62 @@ class LocalSeleniumCrawlerStrategy(CrawlerStrategy):
         except Exception as e:
             raise Exception(f"Failed to crawl {url}: {str(e)}")
 
+    def take_screenshot(self) -> str:
+        try:
+            # Get the dimensions of the page
+            total_width = self.driver.execute_script("return document.body.scrollWidth")
+            total_height = self.driver.execute_script("return document.body.scrollHeight")
+
+            # Set the window size to the dimensions of the page
+            self.driver.set_window_size(total_width, total_height)
+
+            # Take screenshot
+            screenshot = self.driver.get_screenshot_as_png()
+
+            # Open the screenshot with PIL
+            image = Image.open(BytesIO(screenshot))
+
+            # Convert to JPEG and compress
+            buffered = BytesIO()
+            image.save(buffered, format="JPEG", quality=85)
+            img_base64 = base64.b64encode(buffered.getvalue()).decode('utf-8')
+
+            if self.verbose:
+                print(f"[LOG] 📸 Screenshot taken and converted to base64")
+
+            return img_base64
+
+        except Exception as e:
+            error_message = f"Failed to take screenshot: {str(e)}"
+            print(error_message)
+
+            # Generate an image with black background
+            img = Image.new('RGB', (800, 600), color='black')
+            draw = ImageDraw.Draw(img)
+            
+            # Load a font
+            try:
+                font = ImageFont.truetype("arial.ttf", 40)
+            except IOError:
+                font = ImageFont.load_default(size=40)
+
+            # Define text color and wrap the text
+            text_color = (255, 255, 255)
+            max_width = 780
+            wrapped_text = wrap_text(draw, error_message, font, max_width)
+
+            # Calculate text position
+            text_position = (10, 10)
+            
+            # Draw the text on the image
+            draw.text(text_position, wrapped_text, fill=text_color, font=font)
+            
+            # Convert to base64
+            buffered = BytesIO()
+            img.save(buffered, format="JPEG")
+            img_base64 = base64.b64encode(buffered.getvalue()).decode('utf-8')
+
+            return img_base64
+
     def quit(self):
         self.driver.quit()

crawl4ai/database.py

@@ -19,22 +19,23 @@ def init_db():
             markdown TEXT,
             extracted_content TEXT,
             success BOOLEAN,
-            media TEXT
+            media TEXT DEFAULT "{}",
+            screenshot TEXT DEFAULT ""
         )
     ''')
     conn.commit()
     conn.close()
 
-def alter_db_add_media():
+def alter_db_add_screenshot(new_column: str = "media"):
     check_db_path()
     try:
         conn = sqlite3.connect(DB_PATH)
         cursor = conn.cursor()
-        cursor.execute('ALTER TABLE crawled_data ADD COLUMN media TEXT DEFAULT ""')
+        cursor.execute(f'ALTER TABLE crawled_data ADD COLUMN {new_column} TEXT DEFAULT ""')
         conn.commit()
         conn.close()
     except Exception as e:
-        print(f"Error altering database to add media column: {e}")
+        print(f"Error altering database to add screenshot column: {e}")
 
 def check_db_path():
     if not DB_PATH:
@@ -45,7 +46,7 @@ def get_cached_url(url: str) -> Optional[Tuple[str, str, str, str, str, bool, st
     try:
         conn = sqlite3.connect(DB_PATH)
         cursor = conn.cursor()
-        cursor.execute('SELECT url, html, cleaned_html, markdown, extracted_content, success, media FROM crawled_data WHERE url = ?', (url,))
+        cursor.execute('SELECT url, html, cleaned_html, markdown, extracted_content, success, media, screenshot FROM crawled_data WHERE url = ?', (url,))
         result = cursor.fetchone()
         conn.close()
         return result
@@ -53,13 +54,13 @@ def get_cached_url(url: str) -> Optional[Tuple[str, str, str, str, str, bool, st
         print(f"Error retrieving cached URL: {e}")
         return None
 
-def cache_url(url: str, html: str, cleaned_html: str, markdown: str, extracted_content: str, success: bool, media: str = ""):
+def cache_url(url: str, html: str, cleaned_html: str, markdown: str, extracted_content: str, success: bool, media : str = "{}", screenshot: str = ""):
     check_db_path()
     try:
         conn = sqlite3.connect(DB_PATH)
         cursor = conn.cursor()
         cursor.execute('''
-            INSERT INTO crawled_data (url, html, cleaned_html, markdown, extracted_content, success, media)
+            INSERT INTO crawled_data (url, html, cleaned_html, markdown, extracted_content, success, screenshot)
             VALUES (?, ?, ?, ?, ?, ?, ?)
             ON CONFLICT(url) DO UPDATE SET
                 html = excluded.html,
@@ -67,8 +68,9 @@ def cache_url(url: str, html: str, cleaned_html: str, markdown: str, extracted_c
                 markdown = excluded.markdown,
                 extracted_content = excluded.extracted_content,
                 success = excluded.success,
-                media = excluded.media
+                media = excluded.media,                
-        ''', (url, html, cleaned_html, markdown, extracted_content, success, media))
+                screenshot = excluded.screenshot
+        ''', (url, html, cleaned_html, markdown, extracted_content, success, media, screenshot))
         conn.commit()
         conn.close()
     except Exception as e:
@@ -109,12 +111,12 @@ def flush_db():
     except Exception as e:
         print(f"Error flushing database: {e}")
 
-def update_existing_records():
+def update_existing_records(new_column: str = "media", default_value: str = "{}"):
     check_db_path()
     try:
         conn = sqlite3.connect(DB_PATH)
         cursor = conn.cursor()
-        cursor.execute('UPDATE crawled_data SET media = "" WHERE media IS NULL')
+        cursor.execute(f'UPDATE crawled_data SET {new_column} = "{default_value}" WHERE screenshot IS NULL')
         conn.commit()
         conn.close()
     except Exception as e:
@@ -122,5 +124,5 @@ def update_existing_records():
 
 if __name__ == "__main__":
     init_db()  # Initialize the database if not already initialized
-    alter_db_add_media()  # Add the new column to the table
+    alter_db_add_screenshot()  # Add the new column to the table
     update_existing_records()  # Update existing records to set the new column to an empty string

crawl4ai/models.py

@@ -1,5 +1,5 @@
 from pydantic import BaseModel, HttpUrl
-from typing import List, Dict
+from typing import List, Dict, Optional
 
 class UrlModel(BaseModel):
     url: HttpUrl
@@ -9,9 +9,10 @@ class CrawlResult(BaseModel):
     url: str
     html: str
     success: bool
-    cleaned_html: str = None
+    cleaned_html: Optional[str] = None
     media: Dict[str, List[Dict]] = {}
-    markdown: str = None
+    screenshot: Optional[str] = None
-    extracted_content: str = None
+    markdown: Optional[str] = None
-    metadata: dict = None
+    extracted_content: Optional[str] = None
-    error_message: str = None
+    metadata: Optional[dict] = None
+    error_message: Optional[str] = None

crawl4ai/utils.py

@@ -513,4 +513,16 @@ def process_sections(url: str, sections: list, provider: str, api_token: str) ->
             for future in as_completed(futures):
                 extracted_content.extend(future.result())
     
-    return extracted_content
+    return extracted_content
+
+
+def wrap_text(draw, text, font, max_width):
+    # Wrap the text to fit within the specified width
+    lines = []
+    words = text.split()
+    while words:
+        line = ''
+        while words and draw.textbbox((0, 0), line + words[0], font=font)[2] <= max_width:
+            line += (words.pop(0) + ' ')
+        lines.append(line)
+    return '\n'.join(lines)

crawl4ai/web_crawler.py

@@ -59,6 +59,8 @@ class WebCrawler:
         api_token: str = None,
         extract_blocks_flag: bool = True,
         word_count_threshold=MIN_WORD_THRESHOLD,
+        css_selector: str = None,
+        screenshot: bool = False,
         use_cached_html: bool = False,
         extraction_strategy: ExtractionStrategy = None,
         chunking_strategy: ChunkingStrategy = RegexChunking(),
@@ -70,6 +72,8 @@ class WebCrawler:
             extraction_strategy or NoExtractionStrategy(),
             chunking_strategy,
             bypass_cache=url_model.forced,
+            css_selector=css_selector,
+            screenshot=screenshot,
             **kwargs,
         )
         pass
@@ -83,6 +87,7 @@ class WebCrawler:
         chunking_strategy: ChunkingStrategy = RegexChunking(),
         bypass_cache: bool = False,
         css_selector: str = None,
+        screenshot: bool = False,
         verbose=True,
         **kwargs,
     ) -> CrawlResult:
@@ -110,7 +115,8 @@ class WebCrawler:
                         "markdown": cached[3],
                         "extracted_content": cached[4],
                         "success": cached[5],
-                        "media": json.loads(cached[6]),
+                        "media": json.loads(cached[6] or "{}"),
+                        "screenshot": cached[7],
                         "error_message": "",
                     }
                 )
@@ -118,6 +124,9 @@ class WebCrawler:
         # Initialize WebDriver for crawling
         t = time.time()
         html = self.crawler_strategy.crawl(url)
+        base64_image = None
+        if screenshot:
+            base64_image = self.crawler_strategy.take_screenshot()
         success = True
         error_message = ""
         # Extract content from HTML
@@ -166,6 +175,7 @@ class WebCrawler:
             extracted_content,
             success,
             json.dumps(media),
+            screenshot=base64_image,
         )
 
         return CrawlResult(
@@ -174,6 +184,7 @@ class WebCrawler:
             cleaned_html=cleaned_html,
             markdown=markdown,
             media=media,
+            screenshot=base64_image,
             extracted_content=extracted_content,
             success=success,
             error_message=error_message,
@@ -187,6 +198,8 @@ class WebCrawler:
         extract_blocks_flag: bool = True,
         word_count_threshold=MIN_WORD_THRESHOLD,
         use_cached_html: bool = False,
+        css_selector: str = None,
+        screenshot: bool = False,
         extraction_strategy: ExtractionStrategy = None,
         chunking_strategy: ChunkingStrategy = RegexChunking(),
         **kwargs,
@@ -204,6 +217,8 @@ class WebCrawler:
                     [api_token] * len(url_models),
                     [extract_blocks_flag] * len(url_models),
                     [word_count_threshold] * len(url_models),
+                    [css_selector] * len(url_models),
+                    [screenshot] * len(url_models),
                     [use_cached_html] * len(url_models),
                     [extraction_strategy] * len(url_models),
                     [chunking_strategy] * len(url_models),

docs/examples/quickstart.py

@@ -35,7 +35,7 @@ def cprint(message, press_any_key=False):
 
 def basic_usage(crawler):
     cprint("🛠️ [bold cyan]Basic Usage: Simply provide a URL and let Crawl4ai do the magic![/bold cyan]")
-    result = crawler.run(url="https://www.nbcnews.com/business")
+    result = crawler.run(url="https://www.nbcnews.com/business", screenshot=True)
     cprint("[LOG] 📦 [bold yellow]Basic crawl result:[/bold yellow]")
     print_result(result)
 
@@ -187,6 +187,7 @@ def main():
 
     crawler = create_crawler()
 
+    crawler.always_by_pass_cache = True
     basic_usage(crawler)
     understanding_parameters(crawler)
     

main.py

@@ -56,6 +56,7 @@ class CrawlRequest(BaseModel):
     chunking_strategy: Optional[str] = "RegexChunking"
     chunking_strategy_args: Optional[dict] = {}
     css_selector: Optional[str] = None
+    screenshot: Optional[bool] = False
     verbose: Optional[bool] = True
 
 
@@ -125,6 +126,7 @@ async def crawl_urls(crawl_request: CrawlRequest, request: Request):
                     chunking_strategy,
                     crawl_request.bypass_cache,
                     crawl_request.css_selector,
+                    crawl_request.screenshot,
                     crawl_request.verbose
                 )
                 for url in crawl_request.urls

pages/app.js

@@ -104,6 +104,7 @@ document.getElementById("crawl-btn").addEventListener("click", () => {
         chunking_strategy: document.getElementById("chunking-strategy-select").value,
         chunking_strategy_args: {},
         css_selector: document.getElementById("css-selector").value,
+        screenshot: document.getElementById("screenshot-checkbox").checked,
         // instruction: document.getElementById("instruction").value,
         // semantic_filter: document.getElementById("semantic_filter").value,
         verbose: true,
@@ -138,7 +139,14 @@ document.getElementById("crawl-btn").addEventListener("click", () => {
             document.getElementById("cleaned-html-result").textContent = result.cleaned_html;
             document.getElementById("markdown-result").textContent = result.markdown;
             document.getElementById("media-result").textContent = JSON.stringify( result.media, null, 2);
-
+            if (result.screenshot){
+                const imgElement = document.createElement("img");
+                // Set the src attribute with the base64 data
+                imgElement.src = `data:image/png;base64,${result.screenshot}`;
+                document.getElementById("screenshot-result").innerHTML = "";
+                document.getElementById("screenshot-result").appendChild(imgElement);
+            }
+            
             // Update code examples dynamically
             const extractionStrategy = data.extraction_strategy;
             const isLLMExtraction = extractionStrategy === "LLMExtractionStrategy";

pages/partial/try_it.html

@@ -124,6 +124,10 @@
                         <input type="checkbox" id="bypass-cache-checkbox" checked />
                         <label for="bypass-cache-checkbox" class="text-lime-500 font-bold">Bypass Cache</label>
                     </div>
+                    <div class="flex items-center gap-2">
+                        <input type="checkbox" id="screenshot-checkbox" checked />
+                        <label for="screenshot-checkbox" class="text-lime-500 font-bold">Screenshot</label>
+                    </div>
                     <div class="flex items-center gap-2 hidden">
                         <input type="checkbox" id="extract-blocks-checkbox" />
                         <label for="extract-blocks-checkbox" class="text-lime-500 font-bold">Extract Blocks</label>
@@ -152,12 +156,16 @@
                     <button class="tab-btn px-4 py-1 text-sm bg-zinc-700 rounded-t text-lime-500" data-tab="media">
                         Medias
                     </button>
+                    <button class="tab-btn px-4 py-1 text-sm bg-zinc-700 rounded-t text-lime-500" data-tab="screenshot">
+                        Screenshot
+                    </button>
                 </div>
                 <div class="tab-content code bg-zinc-900 p-2 rounded h-full border border-zinc-700 text-sm">
                     <pre class="h-full flex"><code id="json-result" class="language-json"></code></pre>
                     <pre class="hidden h-full flex"><code id="cleaned-html-result" class="language-html"></code></pre>
                     <pre class="hidden h-full flex"><code id="markdown-result" class="language-markdown"></code></pre>
                     <pre class="hidden h-full flex"><code id="media-result" class="language-json"></code></pre>
+                    <pre class="hidden h-full flex"><code id="screenshot-result"></code></pre>
                 </div>
             </div>