Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Video Background Play Fix
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.
28,667 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
147,194 users
Decentraleyes
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.
175,351 users
Gesturefy
Customizable mouse gesture add-on, which supports over 60 different commands and additional features like rocker and wheel gestures.
115,443 users
Impulse Blocker
Block distracting websites when you are browsing the web. You can list websites that you don't want to visit in the settings. You can pause or turn off the blocker quickly. Completely open source.
6,372 users
Turn Off the Lights
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube™ and Beyond. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, Hulu, Metacafe, YouKu, etc.
42,749 users
SoundFixer
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
16,694 users
Brief
Brief makes reading RSS feeds as easy and intuitive as it gets. Designed to have exactly the right set of features, it is powerful and simple at the same time. Feeds are presented on a seamless, interactive page which let's you bookmark and tag items with a single click.
12,028 users
