Core Functionality:

✅ ESI Tag Resolution: Automatically detects and resolves <esi:include> tags on web pages
✅ ESI Comment Support: Handles ESI tags embedded in HTML comments
✅ Try/Except Blocks: Full support for <esi:try> / <esi:attempt> / <esi:except> structures
✅ Smart URL Resolution: Automatically resolves relative URLs against the current page

User Interface:

🎛️ Toggle Control: Simple on/off switch in extension popup
📊 Live Statistics: Real-time tracking of total, successful, and failed ESI requests
🔗 Jump Navigation: Click any fragment URL to scroll directly to it on the page
🎨 Visual Indicators: Dynamic icon switching (green=ON, red=OFF)

Advanced Features:

🛠️ Custom Headers: Add custom HTTP headers to ESI fragment requests
⚠️ Error Display: Clear error messages for failed ESI requests with fallback content
🧹 Statistics Management: Clear statistics per page with one click
🔄 Auto-cleanup: Automatic removal of old statistics after 1 hour

🌐 Browser Support

Firefox: Full support for Firefox 90+
Chrome: Full support for Chrome 90+  
Edge: Compatible (Chromium-based)

🔧 Technical Details Permissions Required:

activeTab: Access current tab for ESI processing
storage: Store extension settings and statistics
<all_urls>: Make HTTP requests to fetch ESI fragments

File Structure:

Content script for ESI processing
Background script for icon management
Popup interface for user controls
Dual icon sets for enabled/disabled states

🛠️ Developer Features

Comprehensive Logging: Detailed console output for debugging
Fragment Tracking: Each processed ESI fragment gets a unique ID
Error Handling: Graceful fallbacks for network issues and malformed ESI
Cross-browser Compatibility: Uses browser API abstraction layer

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