Extensions are like apps for Firefox.
They add features to Firefox to make browsing faster, safer, or just plain fun.
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
200 442 users
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
624 292 users
A secure and free password manager for all of your devices.
361 052 users
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
114 002 users
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
41 289 users
Privacy Possum monkey wrenches common commercial tracking methods by reducing and falsifying the data gathered by tracking companies.
92 604 users
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
359 126 users
Tomato Clock is a simple browser extension that helps with online time management.
44 315 users
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
56 483 users
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
707 636 users