Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
New Tab Override
New Tab Override allows you to set the page that shows whenever you open a new tab.
63,939 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
23,100 users
Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
16,023 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
10,589 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
96,204 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.
112,433 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
726,153 users
Adaptive Tab Bar Color
Changes the color of Firefox theme to match the website’s appearance.
42,707 users
Clear Cache
Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included!
67,545 users
Sink It for Reddit
Upgrade your Reddit experience with color coded comments, easier nav, sub-reddit blocking, gestures for upvoting, ad+nag blocking, and more. It's like RES, for mobile!
16,708 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.
43,571 users