Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1 037 958 brukarar
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.
863 796 brukarar
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.
190 368 brukarar
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
106 025 brukarar
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.
87 890 brukarar
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
76 706 brukarar
Disconnect
Make the web faster, more private, and more secure.
70 227 brukarar
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
57 907 brukarar
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
39 733 brukarar
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
24 148 brukarar
Port Authority
Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.
11 179 brukarar
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
689 239 brukarar
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.
183 520 brukarar
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
158 316 brukarar
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
139 909 brukarar
Wappalyzer
Identify technologies on websites
121 353 brukarar
Violentmonkey
Userscript support for browsers, open source.
109 783 brukarar
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
80 036 brukarar
Web Developer
The Web Developer extension adds various web developer tools to the browser.
76 454 brukarar
Vue.js devtools
DevTools extension for debugging Vue.js applications.
73 246 brukarar
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.
73 024 brukarar
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!
64 129 brukarar