Firefox add-ons with "Developer Tools" tag

Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.

Download videos from the web. Easy, smart, no tracking.

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

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

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.

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

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

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

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

German Dictionary (new Orthography) for spellchecking in Firefox

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.

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.

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

Userscript support for browsers, open source.

FireShot is a Full page screen capture tool that also makes precise Selections even that extend beyond the screen — unlike the standard tool. Fast, simple, private, offline, reliable for research, work, and documentation. Useful to save ChatGPT talks

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.

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

Save up to 95% memory and reduce tab clutter

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

Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.

1VPN - Free VPN Proxy, Unlimited Data, Fast Speeds, Secure Encryption, No-Logs Policy, and Easy to Use.

Show tabs like a tree.

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.

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