Dark Reader
Dunkles Design für jede Website. Schonen Sie Ihre Augen und verwenden Sie Dark Reader für die Nacht und das tägliche Surfen.
1.229.095 Benutzer
Ghostery – datenschutzorientierter Werbeblocker
Der beste Werbeblocker und Datenschutz- Erweiterung für Firefox. Stoppt Tracker, beschleunigt Webseiten und blockiert Werbung überall, einschließlich YouTube und Facebook.
1.000.945 Benutzer
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
60.008 Benutzer
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
728.687 Benutzer
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
144.417 Benutzer
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.
83.418 Benutzer
Ruffle
Bringt Flash zurück ins Web, wo es hingehört.
67.052 Benutzer
User-Agent Switcher
Easily override the browser's User-Agent string
63.963 Benutzer
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.
52.620 Benutzer
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
36.305 Benutzer
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.
33.963 Benutzer
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
26.173 Benutzer
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
16.185 Benutzer
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)
14.683 Benutzer
RESTED
A REST client for the rest of us
14.079 Benutzer
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
13.919 Benutzer
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12.949 Benutzer
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
12.414 Benutzer
Empty Cache Button
Cache clearing made easy. One click.
11.346 Benutzer
MobiDevTools
A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.
10.887 Benutzer
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10.522 Benutzer
Bildschirmfoto speichern
Speichert die aktuell angzeigte Seite als Bilddatei oder kopiert diese in die Zwischenablage.
9.749 Benutzer
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.
8.284 Benutzer
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
7.621 Benutzer