Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Checker Plus for Gmail™
Get notifications, read, listen to or delete emails without opening Gmail and easily manage multiple accounts.
30,539 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
358,277 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
103,250 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
18,905 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.
113,512 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
745,631 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
18,905 users
automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
20,695 users
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
114,093 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.
46,777 users