Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1,324,842 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
420,036 users
Webmail Ad Blocker
Block ads on the right side of the screen when using Gmail, Yahoo Mail, Hotmail and Outlook.com which expand your message space
29,646 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
10,547 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
96,332 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.
113,039 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
727,553 users
Clear Cache
Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included!
64,108 users
Adaptive Tab Bar Color
Changes the color of Firefox theme to match the website’s appearance.
40,287 users
Tranquility Reader
Tranquility Reader improves the readability of web articles by removing unnecessary elements like ads, images, social sharing widgets, and other distracting fluff.
42,574 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
420,036 users