Dark Reader
Mörkt läge på alla webbplatser. Ta hand om dina ögon och använd ett mörkt tema för att surfa på natten och dagen.
1 158 244 användare
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1 031 394 användare
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.
203 326 användare
Flagfox
Visar en landsflagga för den besökta webbserverns plats och tillhandahåller ett flertal verktyg som säkerhetskontroller för webbsidor, "whois", översättning, liknande sidor, validering, URL-förkortning m.m.
114 293 användare
Stylus
Style:a om webben med Stylus, en användarstils-hanterare. Stylus låter dig enkelt installera teman och skal för många populära sidor.
109 934 användare
Disconnect
Make the web faster, more private, and more secure.
95 079 användare
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.
93 156 användare
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
88 267 användare
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
77 029 användare
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
62 363 användare
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
26 490 användare
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
18 692 användare
Stylebot
Change the appearance of the web instantly
12 219 användare
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
673 460 användare
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.
185 449 användare
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
160 978 användare
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
146 914 användare
Wappalyzer
Identify technologies on websites
119 665 användare
Web Developer
The Web Developer extension adds various web developer tools to the browser.
89 325 användare
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
86 740 användare
Vue.js devtools
DevTools extension for debugging Vue.js applications.
84 839 användare
Violentmonkey
Userscript support for browsers, open source.
82 128 användare
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.
62 595 användare
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.
61 912 användare
User-Agent Switcher
Easily override the browser's User-Agent string
60 724 användare