AdBlocker Ultimate
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
168,408 users
Video Background Play Fix
Some sites may not work with Firefox for Android video background play feature. This add-on provides a quick fix by blocking the Page Visibility API and the Fullscreen API.
121,733 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
318,481 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
203,874 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
202,961 users
Dark Background and Light Text
Make every web page (or just the pages you want) display light text on dark backgrounds. All color variations are fully customizable.
32,025 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.
53,959 users
uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
5,337,425 users
AdBlock for Firefox
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
954,096 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
754,489 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,057,327 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
27,294 users
Steam URL Opener
Allows you to open URLs inside Steam Client to save the hassle of logging in normal browser.
1,478 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
1,804,978 users
Turn Off the Lights for Firefox
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
34,525 users
Download Video and Flash - HD Download
Download Video and Flash - HD Download is a great download helper tool that lets you download video and Flash games very easily. Download from YouTube, Facebook, Dailymotion, Vimeo and more. Download and enjoy! Download now!
76,161 users
Turbo Ad Blocker
Turbo ad blocker blocks all annoying ads on video hosting sites such as Youtube, Vimeo, DailyMotion and others. The extension speeds up websites loading and blocks third-party tracking.
18,757 users