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.
30,026 users
Checker Plus for Gmail™
Get notifications, read, listen to or delete emails without opening Gmail and easily manage multiple accounts.
31,310 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
10,507 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
96,009 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.
111,900 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
723,931 users
Adaptive Tab Bar Color
Changes the color of Firefox theme to match the website’s appearance.
41,348 users
Clear Cache
Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included!
65,263 users
Sink It for Reddit
Upgrade your Reddit experience with color coded comments, easier nav, sub-reddit blocking, gestures for upvoting, ad+nag blocking, and more. It's like RES, for mobile!
16,368 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.
42,814 users