- Any Firefox
- Firefox 54.0
- Firefox 44.0
- Firefox 43.0
- Firefox 26.0
- Firefox 18.0
- Firefox 17.0
- Firefox 16.0
- Firefox 12.0
- Firefox 4.0
94 matching results
This extension shows information about a web page's HTML elements as you hover over them. The details are displayed in a text stripe at the top of the screen. Clicking on the text stripe will toggle it between top and bottom placement.
NoScript Security Suite Requires Restart Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.
Switch between code panes on CodePen, JSFiddle, and other online code editors, right from the keyboard.
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.
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
DejaClick Requires Restart
Record, bookmark and replay your browser activities in a snap with DéjàClick. Designed for Firefox, DéjàClick can handle the most complex websites - including AJAX, Flash, forms and more. With a single click you can repeat your most common tasks.
See if movies and shows in your IMDb watchlist are available for instant streaming on Netflix.
This add-on adds JS Fiddle style code prototyping to Firefox DevTools.
Blocks desired HTML contents (script, style, image, object, media)
FireSSH Requires Restart Featured
An Addon for Detecting Malicious and Suspicious Webpages.
DevTools Tweaks Requires Restart
DevTools Tweaks extends the features of the built-in Firefox Devtools.
Adds ability to (recursively) compare two different nodes in the inspector. Adds JSON parser to network view in Web Console, and adds hidden options to the options panel.