Explore powerful tools and features to customize Firefox and make the browser all your own.
Read ePub files right in Firefox. No additional software needed!
Create, modify, and quickly change tab groups
A no-fuss way to save and organize batches of tabs as bookmarks. Clear your tabs, clear your mind.
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
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
A secure and free password manager for all of your devices.
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.
Automatically learns to block invisible trackers.
View archived and cached versions of web pages on 10+ search engines, such as the Wayback Machine, Archive․is, Google, Bing, Yandex, Gigablast, WebCite, Sogou, Memento, Naver and Yahoo Japan.
This is probably a laser cat add-on so you can shoot laser cat lasers at things.
Tabs tree and bookmarks in sidebar with advanced containers configuration.
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.