PostHog Blocker

A Chrome extension that allows you to block PostHog analytics and recordings on specific domains of your choice.

Features

• 🔒 Block PostHog analytics and recordings on selected domains
• 🌐 Support for both exact domain matches and subdomains
• 🎨 Clean, modern UI with dark mode support
• 🔍 Domain filtering and search
• 📱 Responsive design
• 🔄 Real-time blocking without page reload

Installation

1. Download the latest release from the Chrome Web Store
2. Or install manually:
   • Download the repository
   • Open Chrome and go to chrome://extensions/
   • Enable "Developer mode"
   • Click "Load unpacked" and select the extension directory

Usage

1. Click the extension icon to open the options page
2. Add domains where you want to block PostHog (e.g., example.com)
3. The extension will automatically block PostHog on:
   • The exact domain (e.g., example.com)
   • All subdomains (e.g., app.example.com, api.example.com)

How It Works

The extension uses multiple techniques to ensure PostHog is completely blocked:

1. Network Blocking: Blocks requests to PostHog's servers
2. JavaScript Interception: Replaces PostHog's JavaScript API with a no-op stub
3. Storage Sync: Your blocked domains list syncs across Chrome browsers

Development

Project Structure

• manifest.json - Extension configuration
• content_script.js - Main blocking logic
• options.html - User interface
• options.js - UI logic and domain management
• rules.json - Network blocking rules

Building

1. Clone the repository
2. Make your changes
3. Load the extension in Chrome using "Load unpacked"

Compress by running

zip -r posthog-self-blocker.zip manifest.json content_script.js options.html options.js icon128.png icon128_white.png rules.json background.js

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License - see LICENSE for details.

Author

Built with ❤️ by Marc Janer