Extensions are like apps for Firefox.
They add features to Firefox to make browsing faster, safer, or just plain fun.
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.
64,880 users
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
39,114 users
Web Archives
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.
44,268 users
uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
6,416,390 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
954,197 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
332,069 users
Decentraleyes
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.
265,874 users
Video Background Play Fix
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
146,560 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
895,709 users
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
604,379 users