Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1.182.368 usatores
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1.052.026 usatores
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.
217.635 usatores
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...
118.052 usatores
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.
112.326 usatores
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.
98.554 usatores
Disconnect
Make the web faster, more private, and more secure.
96.136 usatores
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
91.072 usatores
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
81.256 usatores
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
66.574 usatores
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
28.423 usatores
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
19.765 usatores
Stylebot
Change the appearance of the web instantly
13.113 usatores
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
714.421 usatores
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.
195.573 usatores
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
172.543 usatores
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
155.202 usatores
Wappalyzer
Identify technologies on websites
130.408 usatores
Web Developer
The Web Developer extension adds various web developer tools to the browser.
94.397 usatores
Vue.js devtools
DevTools extension for debugging Vue.js applications.
92.669 usatores
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
88.286 usatores
Violentmonkey
Userscript support for browsers, open source.
88.206 usatores
User-Agent Switcher
Easily override the browser's User-Agent string
66.950 usatores
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.
65.647 usatores
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.
64.898 usatores