Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
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.
124,467 users
Webmail Ad Blocker
Block ads on the right side of the screen when using Gmail, Yahoo Mail, Hotmail and Outlook.com which expand your message space
28,026 users
Immersive Translate - Translate Website & PDF
Free Translate Website, Translate PDF & Epub eBook, Translate Video Subtitles in Bilingual
117,847 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
105,359 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.
111,438 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
18,999 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
741,003 users
Turn Off the Lights for Firefox
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. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
65,133 users
Checker Plus for Gmail™
Get notifications, read, listen to or delete emails without opening Gmail and easily manage multiple accounts.
37,225 users
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
51,789 users
Show Video Controls for Firefox
Automatically enables video controls when playing html webm videos.
5,472 users