Privacy Badger
Automatically learns to block invisible trackers.
557,593 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
339,151 users
Cookie AutoDelete
Control your cookies! This WebExtension is inspired by Self Destructing Cookies. When a tab closes, any cookies not being used are automatically deleted. Whitelist the ones you trust while deleting the rest. Support for Container Tabs.
158,366 users
Decentraleyes
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
142,718 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
339,151 users
Emoji Cheatsheet
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook. Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
80,390 users
Social Fixer
Social Fixer for Facebook fixes annoyances, adds features, and enhances existing functionality to make FB more fun and efficient. Filter the news feed, hide sponsored posts and political posts, hide parts of the page you don't want to see, and more!
17,029 users
FB unseen
Blocks the ”seen” feature of the facebook messenger, and your friends will no longer be able to see if you read their messages.
8,197 users
Cookiebro - Cookie Manager
Advanced cookie manager for easy cookie management and automatic deletion of unwanted cookies. Supports whitelist & blacklist and provides an easy-to-use interface for whitelisting domains. View, Edit, Create, Search cookies in Cookie Editor.
5,387 users
Font Finder (revived)
An easy-to-use font inspector to get CSS styles of the selected element
22,505 users
Tab notifier
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
1,632 users
Textmarker
Highly customizable text highlighter with different colors and save option for later visits. Parts of the underlying WebExtensions API are not supported on Android and ESR.
6,923 users
Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
11,201,526 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,828,912 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,176,434 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,427,378 users