Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Port Authority
Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.
20,871 users
CanvasBlocker
Alters some JS APIs to prevent fingerprinting.
40,890 users
Undo Close Tab
Allows you to restore the tab you just closed with a single click—plus it can offer a list of recently closed tabs within a convenient context menu.
46,132 users
PhotoShow
Hover to zoom and view high-definition images. Instantly enlarge visuals, crafted for all your favorite websites—and for you.
11,703 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
10,334 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.
112,690 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
93,934 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
724,287 users
Image Max URL
Finds larger/original versions of images (supporting 10,000+ websites), including a powerful media popup feature
18,369 users
Notefox: websites notes
Take notes on every website in a smart and simple way!
10,732 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!
10,639 users
Raindrop.io
All-in-one bookmark manager
42,104 users