Dark Reader
Mörkt läge på alla webbplatser. Ta hand om dina ögon och använd ett mörkt tema för att surfa på natten och dagen.
1 227 294 användare
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.
974 122 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.
210 987 användare
Stylus
Style:a om webben med Stylus, en användarstils-hanterare. Stylus låter dig enkelt installera teman och skal för många populära sidor.
128 215 användare
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
102 681 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.
98 969 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.
86 482 användare
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
75 110 användare
Disconnect
Make the web faster, more private, and more secure.
69 090 användare
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
55 848 användare
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
35 079 användare
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
23 117 användare
Port Authority
Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.
12 146 användare
Stylebot
Change the appearance of the web instantly
9 689 användare
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
722 440 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.
179 924 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
155 885 användare
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
135 307 användare
Wappalyzer
Identify technologies on websites
121 389 användare
Violentmonkey
Userscript support for browsers, open source.
115 570 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.
83 723 användare
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
81 103 användare
Web Developer
The Web Developer extension adds various web developer tools to the browser.
72 284 användare
Vue.js devtools
DevTools extension for debugging Vue.js applications.
67 924 användare
Ruffle
Återställer Flash på webben, där det hör hemma.
66 689 användare