Extensions are like apps for Firefox.
They add features to Firefox to make browsing faster, safer, or just plain fun.
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
6 171 053 users
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
919 992 users
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
243 508 users
Tomato Clock is a simple browser extension that helps with online time management.
38 962 users
View archived and cached versions of web pages on 10+ search engines, such as the Wayback Machine, Archive․is, Google, Bing, Yandex, Baidu and Yahoo.
42 052 users
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
141 246 users
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1 141 159 users
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.
258 313 users
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.
62 297 users
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
866 924 users