Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1.168.776 brûkers
Ghostery – Privacy Ad Blocker
Ghostery is een krachtige privacy extensie. Blokkeer ads, stop trackers en maak websites sneller.
964.418 brûkers
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
124.860 brûkers
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
58.069 brûkers
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
710.537 brûkers
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
139.817 brûkers
Cookie-Editor
Cookie-Editor lets you efficiently create, edit and delete a cookie for the current tab. Perfect for developing, quickly testing or even manually managing your cookies for your privacy.
78.703 brûkers
Ruffle - Flash Emulator
Putting Flash back on the web. Designed to be easy to use, this extension will seamlessly enable you to play flash content, with no extra configuration required!
65.765 brûkers
User-Agent Switcher
Easily override the browser's User-Agent string
61.898 brûkers
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
51.420 brûkers
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
34.989 brûkers
Disable JavaScript
Adds the ability to disable JavaScript for specific sites or specific tabs. You can customize the default JS state (on or off), the disable behavior (by domain or by tab) and much more.
33.089 brûkers
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
25.454 brûkers
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
15.595 brûkers
My IP Hider VPN
My IP Hider VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older My IP Hider VPN from "Version History" (https://goo.gl/7ZQQjZ)
13.865 brûkers
RESTED
A REST client for the rest of us
13.579 brûkers
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
13.338 brûkers
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12.516 brûkers
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
11.972 brûkers
Empty Cache Button
Cache clearing made easy. One click.
10.962 brûkers
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10.104 brûkers
MobiDevTools
A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.
9.515 brûkers
Save Screenshot
Saves the current page as image file or copies it to clipboard.
9.133 brûkers
ScriptCat
脚本猫,一个可以执行用户脚本的浏览器扩展,万物皆可脚本化,让你的浏览器可以做更多的事情!
8.220 brûkers
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.
8.192 brûkers