26,027 users
h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
25,958 users
Arabic spell-checking dictionary
Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.
25,951 users
CSFloat Market Checker
Shows the float value, paint seed, and screenshots of Counter-Strike (CS:GO & CS2) items on the Steam Market or Inventories
25,721 users
CORS Everywhere
A firefox addon allowing the user to enable CORS everywhere by altering http responses. Report issues to the repository, with enough information to reproduce the problem: https://github.com/spenibus/cors-everywhere-firefox-addon/issues
25,544 users
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
25,306 users
JSONView
View JSON documents in the browser.
25,283 users
User-Agent Switcher
Quickly and easily switch between popular user-agent strings.
25,179 users
Media Converter and Muxer - Audio Tools
Easy to use video and audio converter and muxer written in WebExtension built on top of the well-known FFmpeg converter
25,146 users
S3.Translator
S3.Translator adds the power of Google Translate’s automatic translations to your browser! It supports translation of selected text, entered phrase or whole webpage between any of 100+ languages. New Feature: Language learning!
24,819 users
Save as PDF
Download web pages as PDF in one click.
24,610 users
24,588 users
Diccionario español México
Diccionario para México.
24,586 users
PDF Mage
Save any page as PDF
24,338 users
Silk - Privacy Pass Client
Client support for Privacy Pass anonymous authorization protocol.
24,261 users
Easy Video Downloader (Flash and Video)
A video and audio downloader (grabber) that works with both internal and external download managers like IDM or Wget
24,072 users
British-English Dictionary (GB)
A strict British-English spell checker dictionary for Firefox, Thunderbird and SeaMonkey. This dictionary only includes words conforming to the preferred standard of British-English spelling.
23,987 users
PhishWall
PhishWall
23,668 users
SAML-tracer
A tool for viewing SAML and WS-Federation messages sent through the browser during single sign-on and single logout.
23,621 users
Don't "Accept" image/webp
This extension removes image/webp and/or image/avif from the list of formats Firefox tells sites that it accepts. That discourages many servers from replacing JPEG and PNG images with WebP/AVIF. (But some may send them anyway; they aren't blocked.)
23,504 users
23,437 users
Notes by Firefox
Displays a sidebar that lets you take notes on web pages.
23,328 users
23,296 users
BNB Chain Wallet
A Crypto Wallet for BNB Smart Chain, BNB Beacon Chain and Ethereum.
23,246 users
Hide Youtube-Shorts
Hides YouTube-shorts videos from home page, subscriptions, search results.
23,225 users