A simple browser extension that adds a red border to websites.
Boderify is a lightweight browser extension that adds a 5-pixel solid red border around the body of web pages on Mozilla websites. This extension serves as a basic example of how browser extensions can modify page content.
- Adds a 5px solid red border to the body of web pages
- Works on all Mozilla.org domains
- Minimal impact on page load performance
- Download or clone this repository
- Open your browser's extension page
- Enable developer mode
- Click "Load unpacked" and select the extension folder
manifest.json: Configuration file that defines extension properties and behaviorborderify.js: Content script that applies the red border to web pagesicons/border-48.png: Extension icon
When you visit any Mozilla.org website, the extension automatically executes the content script (borderify.js), which adds a red border around the entire page.
Currently configured to work with:
- Firefox (Manifest V2)
This project is open source and available for educational purposes.