Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1.186.341 brûkers
Ghostery – Privacy Ad Blocker
Ghostery is een krachtige privacy extensie. Blokkeer ads, stop trackers en maak websites sneller.
1.070.062 brûkers
FoxyProxy Standard
FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.
218.477 brûkers
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
120.343 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.
113.713 brûkers
Disconnect
Make the web faster, more private, and more secure.
99.024 brûkers
User-Agent Switcher and Manager
Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
97.853 brûkers
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
90.868 brûkers
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
82.296 brûkers
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
66.895 brûkers
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
28.946 brûkers
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
19.562 brûkers
Stylebot
Change the appearance of the web instantly
10.555 brûkers
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
712.038 brûkers
React Developer Tools
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
197.199 brûkers
FireShot: Full Web Page Screenshots (♥♥♥♥♥)
FireShot makes full page screen captures - http://bit.ly/RlBQMV Screenshots are quickly captured and: ― Saved as Image / PDF with links and text ― Sent to clipboard ― Printed Capture all open tabs or provide a list of the URLs for grabbing
174.888 brûkers
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
157.695 brûkers
Wappalyzer
Identify technologies on websites
129.697 brûkers
Web Developer
The Web Developer extension adds various web developer tools to the browser.
97.151 brûkers
Vue.js devtools
DevTools extension for debugging Vue.js applications.
94.401 brûkers
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
89.408 brûkers
Violentmonkey
Userscript support for browsers, open source.
85.779 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.
66.337 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.
64.273 brûkers
User-Agent Switcher
Easily override the browser's User-Agent string
63.345 brûkers