Web and Developer Tools
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.
Image Zoom (ugly fixes) Requires Restart
An ugly attempt at fixing Image Zoom
Proxy Tool Requires Restart
Proxy Tool - Powerful, yet User-friendly proxy tool to manage your proxies and anonymity needs, including: 46M+ user agents (world's largest), 10 different spoofed HTTP referrers, auto-proxy rotation, plus many more. Developed by http://ProxyList.co
Copy Pure Text Requires Restart
Allows to copy selected text as plain text by adding a 'Copy as Text' menu item to context menu.
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
jQuery Requires Restart
jQuery and jQuery UI embedded in browser
A full featured color selector tool, to work with colors, and easily find the colors you want.
Pretty-prints JSON content in the browser for easy, unobtrusive viewing.
View HTTP headers of a page and while browsing.
This is an unofficial "Live HTTP headers" clone, mainly to fix the Replay feature!
User Agent Switcher Requires Restart
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Full Web Page Screenshots (♥♥♥♥♥) Requires Restart
FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV
Screenshots can be quickly captured and:
― Saved as Image or PDF
― Sent to clipboard
― Annotated *
― Uploaded *
― E-Mailed *
* OS Windows only
This add-on is not compatible with your version of SeaMonkey because of the following:
- Add-on has opted into strict compatibility checking.
HttpFox Requires Restart
An HTTP analyzer addon for Firefox
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
Font Finder Requires Restart
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Firesizer Requires Restart
Allows you to resize the window to specific dimensions.
NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.
CloudBleed, search have you visited affected websites recently by browser history.
View Source Requires Restart
Shows all source files of a webpage.
In the DOM Inspector,quickly navigate to the any elements