Dark Reader
Tema escuro para todos os sites. Cuide dos seus olhos, use o Dark Reader para navegação noturna e diária.
1 235 650 utilizadores
Ghostery – Privacy Ad Blocker
The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
989 662 utilizadores
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.
129 408 utilizadores
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
57 501 utilizadores
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
729 548 utilizadores
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
139 413 utilizadores
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.
84 859 utilizadores
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!
67 245 utilizadores
User-Agent Switcher
Easily override the browser's User-Agent string
63 106 utilizadores
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.
50 977 utilizadores
WhatFont
A wrapper for Chengyin Liu's WhatFont tool
35 003 utilizadores
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.
33 159 utilizadores
Disable WebRTC
WebRTC leaks your actual IP addresses from behind your VPN, by default.
25 965 utilizadores
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
15 565 utilizadores
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)
14 681 utilizadores
Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
14 422 utilizadores
RESTED
A REST client for the rest of us
13 516 utilizadores
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12 670 utilizadores
JSON Lite
Fast JSON viewer - highlights, shows items count/size, handles large files
11 892 utilizadores
Empty Cache Button
Cache clearing made easy. One click.
10 843 utilizadores
Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
10 403 utilizadores
Save Screenshot
Saves the current page as image file or copies it to clipboard.
9633 utilizadores
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.
8033 utilizadores
ScriptCat
Everything can be scripted, allowing your browser to do more!
7599 utilizadores
WhatRuns
Discover what runs a website - This Firefox extension helps you identify technologies used on any website at the click of a button.
7350 utilizadores