Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1.066.990 utents
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
934.021 utents
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.
191.135 utents
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.
93.993 utents
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
90.473 utents
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
87.218 utents
Disconnect
Make the web faster, more private, and more secure.
86.201 utents
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
60.560 utents
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
25.666 utents
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
19.014 utents
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
647.574 utents
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.
181.632 utents
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
159.025 utents
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
142.176 utents
Wappalyzer
Identify technologies on websites
121.589 utents
Web Developer
The Web Developer extension adds various web developer tools to the browser.
84.418 utents
Vue.js devtools
DevTools extension for debugging Vue.js applications.
83.054 utents
Violentmonkey
Userscript support for browsers, open source.
82.953 utents
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
82.156 utents
User-Agent Switcher
Easily override the browser's User-Agent string
63.129 utents
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.
60.650 utents
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.
59.414 utents