Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
100,656 users
Webmail Ad Blocker
Remove advertising clutter from your web-based email. Expand your viewable area by blocking and removing ads on the right-hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
28,115 users
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
273,899 users
User-Agent Switcher and Manager
Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
86,360 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
85,262 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.
109,094 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
677,859 users
Yomitan
Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.
27,411 users
PhotoShow
Hover to zoom and view high-definition images. Instantly enlarge visuals, crafted for all your favorite websites—and for you.
10,435 users
Immersive Translate - Translate Website & PDF
Free Translate Website, Translate PDF & Epub eBook, Translate Video Subtitles in Bilingual
80,219 users
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
39,792 users
