Content Filter Firefox Extension

Overview

This Firefox extension automatically filters and hides sensitive content from web pages, including violent/abusive language, political references, and mentions of specific public figures. It works in real-time and continuously monitors page changes.

Features

• Filters violent and abusive terminology
• Hides political content and references
• Removes mentions of specific public figures
• Works dynamically on page updates
• Preserves page structure while hiding sensitive content
• Handles common misspellings and variations
• Supports Unicode and special characters

Installation

Temporary Installation (for Development)

1. Download or clone this repository
2. Open Firefox and navigate to about:debugging
3. Click "This Firefox"
4. Click "Load Temporary Add-on"
5. Navigate to the extension directory and select manifest.json

Permanent Installation

1. Package the extension by zipping the contents
2. Submit to Firefox Add-ons for review
3. Once approved, users can install directly from Firefox Add-ons website

Extension Structure

firefox-content-filter/
├── manifest.json
├── content-script.js
├── popup.html
├── popup.js
└── words.js

Configuration

To modify the filter list, edit the wordsToHide array in content.js. Each entry can be:

• Simple word: 'example'
• Phrase: 'example phrase'
• Handle: '@handle'
• Special character variations: 'example\u2019s'

Technical Details

• Uses MutationObserver for dynamic content monitoring
• Implements regex-based pattern matching
• Preserves DOM structure while hiding content
• Handles edge cases like contentEditable elements
• Processes text nodes individually to maintain page stability

Development

The extension uses vanilla JavaScript and requires no build process. To modify:

1. Edit the source files
2. Load the extension in Firefox using the temporary installation method
3. Make changes and reload the extension to test

Contributing

Feel free to submit issues and enhancement requests through GitHub's issue tracker.