Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
43,299 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
375,989 users
Privacy Badger
Automatically learns to block hidden trackers. Made by the leading digital rights nonprofit EFF to stop companies from spying on you.
1,807,251 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
86,300 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.
107,951 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
677,208 users
Privacy Badger
Automatically learns to block hidden trackers. Made by the leading digital rights nonprofit EFF to stop companies from spying on you.
1,807,251 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
1,620 users
Power Thesaurus
Use the power of synonyms by button in toolbar, right-click or by word selection on any page.
1,845 users
Show Video Controls for Firefox
Automatically enables video controls when playing html webm videos.
2,270 users
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
49,655 users