Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,145,918 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
683,607 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
356,539 users
FoxyProxy Standard
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
157,168 users
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...
129,734 users
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
76,605 users
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.
71,280 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
68,438 users
Stylus
Redesign your favourite websites with Stylus, an actively developed and community driven user-style manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalised CSS stylesheets.
66,492 users
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.
52,503 users
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
27,866 users
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
13,887 users
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 ― Annotated * ― Uploaded * ― E-Mailed * * OS Windows only
161,551 users
ColorZilla
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
146,190 users
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.
133,052 users
Web Developer
The Web Developer extension adds various web developer tools to the browser.
115,831 users
Windscribe - Free VPN and Ad Blocker
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
84,955 users
Stylish - Custom themes for any website
Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.
66,772 users
Nimbus Screen Capture: Screenshot, Edit, Annotate
★ Used by Several Million users on different platforms ★ 1) Screen capture web pages 2) Selected regions 3) Whole browser window 4) Slack upload Edit screenshots. Save images as local files or Google Drive. Tools for Annotation. Upload and share
62,747 users
