h264ify
Makes YouTube stream H.264 videos instead of VP8/VP9 videos
26,206 users
CanvasBlocker
Alters some JS APIs to prevent fingerprinting.
26,138 users
Arabic spell-checking dictionary
Arabic spell-checking dictionary for Firefox 3 and Thunderbird 3 from Ayaspell.
26,126 users
Адаптер Рутокен Плагин
Позволяет использовать Рутокен Плагин
26,088 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
25,937 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
25,669 users
25,606 users
PopUpOFF
Removes and prevents popups, overlays and cookie notifications, other tools do not. Enjoy the original look of the internet.
25,600 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!
25,463 users
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
25,457 users
Save as PDF
Lets you download web pages as PDF in one click.
25,415 users
PDF Mage
Save any page as PDF
25,277 users
Diccionario español México
Diccionario para México.
24,885 users
IE View WE
Provides ability to open pages and links by Internet Explorer (Cloned IE View based on WebExtensions-based)
24,762 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.
24,762 users
Silk - Privacy Pass Client
Client support for Privacy Pass anonymous authorization protocol.
24,638 users
PhishWall
PhishWall
24,524 users
24,438 users
SAML-tracer
A tool for viewing SAML and WS-Federation messages sent through the browser during single sign-on and single logout.
24,356 users
24,278 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
24,277 users
BNB Chain Wallet
A Crypto Wallet for BNB Smart Chain, BNB Beacon Chain and Ethereum.
23,773 users
Notes by Firefox
Displays a sidebar that lets you take notes on web pages.
23,718 users
Passbolt - Open source password manager for teams
Passbolt is an open source password manager designed for collaboration. Securely create, manage and monitor your passwords. Share them instantly with your team.
23,600 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.)
23,586 users