- Dark Reader- Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing. - 1 269 138 brukere
- 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. - 994 948 brukere
- 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. - 207 876 brukere
- Download All Images- Easily save images with a wide range of customization features, such as file size, dimensions, and image type. - 100 620 brukere
- 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. - 85 905 brukere
- Tab Reloader (page auto refresh)- An easy-to-use tab reloader with custom reloading time settings for individual tabs - 74 332 brukere
- Disconnect- Make the web faster, more private, and more secure. - 68 131 brukere
- Clear Cache- Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included! - 55 395 brukere
- Chrome Mask- Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise. - 50 282 brukere
- Clear Browsing Data- Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click. - 31 672 brukere
- Measure-it- Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels. - 22 244 brukere
- Port Authority- Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts. - 18 662 brukere
- Tampermonkey- Tampermonkey is the world's most popular userscript manager. - 762 836 brukere
- 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. - 169 308 brukere
- 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 - 155 695 brukere
- ColorZilla- Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies... - 133 976 brukere
- Violentmonkey- Userscript support for browsers, open source. - 123 863 brukere
- Wappalyzer- Identify technologies on websites - 117 925 brukere
- 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. - 91 080 brukere
- Windscribe - Free VPN and Ad Blocker- Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day. - 82 000 brukere
- 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! - 71 185 brukere
- Web Developer- The Web Developer extension adds various web developer tools to the browser. - 70 994 brukere
























