Developer Tools - Firefox add-ons

The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.

Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.

Firefox Language Pack for Português (BR) (pt-BR) – Brazilian Portuguese

The most secure wallet for crypto, NFTs, and DeFi, trusted by millions of users

A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.

Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.

Keeps you safe when browsing the web by identifying and blocking dangerous websites.

Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.

German Dictionary (new Orthography) for spellchecking in Firefox

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.

Show tabs like a tree.

Stay informed, work smarter, and communicate globally without leaving your browser.

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.

Customize the way a web page displays or behaves, by using small bits of JavaScript.

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

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...

This extension provides integration with GNOME Shell and the corresponding extensions repository https://extensions.gnome.org

Identify technologies on websites

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.

Userscript support for browsers, open source.

Easily save images with a wide range of customization features, such as file size, dimensions, and image type.

Firefox Language Pack for Aragonés (an) – Aragonese

Firefox Language Pack for Taqbaylit (kab) – Kabyle

Lookup scholarly articles as you browse the web.