EDITEUR/DEVELOPPER

by philwhite

14 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,828 reviews

1,993,048 users

Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 262 reviews

318,268 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

Web Developer by chrispederick

Rated 5 out of 5 stars 228 reviews

471,065 users

The Web Developer extension adds various web developer tools to the browser.

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 50 reviews

109,566 users

As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.

Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 306 reviews

257,497 users

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

HttpFox by Martin Theimer

Rated 4 out of 5 stars 166 reviews

81,085 users

An HTTP analyzer addon for Firefox

JavaScript Deobfuscator by Wladimir Palant

Rated 5 out of 5 stars 20 reviews

53,558 users

This add-on shows you what JavaScript code runs on a web page, even if it is obfuscated and generated on the fly. Simply open JavaScript Deobfuscator from the Web Developer menu and watch the scripts being compiled/executed.

Html Validator by Marc Gueury

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon

For Online HTML 5 validation, you need 0.962
http://users.skynet.be/mgueury/mozilla

Scriptish by Erik Vold, Nils Maier, others

Rated 4 out of 5 stars 116 reviews

64,299 users

The greatest user script engine on the Internet (a fork of Greasemonkey).

Page Hacker by nico@nc

Rated 4 out of 5 stars 68 reviews

6,284 users

Adds a button to edit the currently viewed page.

Pixel Perfect by Mike Buckley, Lorne Markham, others

Rated 4 out of 5 stars 103 reviews

11,868 users

Pixel Perfect is a Firefox extension that allows web developers and designers to easily overlay a web composition with semi-transparent layers (images). These layers can be consequently used for per pixel comparison between the page and a layer.

Execute JS by Rudolf Noe

Rated 5 out of 5 stars 13 reviews

5,288 users

Execute JS is a enhanced JavaScript-Console, where you can comfortably enter and execute arbitrary JavaScript-Code and modify functions...

Magnifier by Girish Sharma, Paul Rouget

Rated 4 out of 5 stars 8 reviews

1,694 users

A quick restartless magnifier to debug styles and web pages.

Graphical Timeline by Girish Sharma

Rated 4 out of 5 stars 1 review

221 users

A Firefox Developer Tool to visually analyze various events like Network Calls, DOM Events, Garbage/Cycle Collection, etc.

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