Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Yomitan
Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.
31,406 users
Tranquility Reader
Tranquility Reader improves the readability of web articles by removing unnecessary elements like ads, images, social sharing widgets, and other distracting fluff.
51,231 users
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
128,010 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
97,871 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
11,367 users
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
114,313 users
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
737,248 users
Clear Cache
Global cache cleanup and site data (cookies/storage) with time periods and notifications. Great for developers. F9 shortcut included!
92,534 users
Show Video Controls for Firefox
Automatically enables video controls when playing html webm videos.
4,537 users
Tranquility Reader
Tranquility Reader improves the readability of web articles by removing unnecessary elements like ads, images, social sharing widgets, and other distracting fluff.
51,231 users
Control Panel for Twitter
Gives you more control over Twitter and adds missing features and UI improvements
47,076 users