Webdev

by Stéphane Mourey

21 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,088 reviews

1,933,422 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...

Web Developer by chrispederick

Rated 5 out of 5 stars 260 reviews

439,234 users

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

ColorZilla by Alex Sirota

Rated 4 out of 5 stars 343 reviews

241,255 users

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

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 360 reviews

130,018 users

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

YSlow by YSlow

Rated 3 out of 5 stars 220 reviews

67,708 users

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 88 reviews

207,509 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

18,728 users

Finds HTML elements matching chosen CSS selector(s) or XPath expression

FirePHP by cadorn

Rated 4 out of 5 stars 50 reviews

37,709 users

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Not using Firebug 1.9+ on Firefox 8+? See http://firephp.org/

Screengrab by Andy M

Rated 4 out of 5 stars 587 reviews

18,509 users

Screengrab! saves webpages as images... but not for new versions of Firefox.

FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.

Therefore, Screengrab is EOL.

IE Tab + (FF 8+, 7, 6, 5, 4, 3.6, 3.5, SeaMonkey) by IE Tab Pro

Rated 3 out of 5 stars 87 reviews

71,256 users

IE Tab + is an enhanced version of IE Tab. It supports FF 3.5 or greater, integrates IE Tab with Adblock Plus in the IE Tab engine, and synchronizes cookies between IE and Firefox. You can easily import settings from the original IE Tab into IE Tab +

CSS Usage by Teun van Eijsden

Rated 4 out of 5 stars 40 reviews

17,293 users

Firebug extension to view which CSS rules are actually used.

CodeBurner for Firebug by SitePoint

Rated 3 out of 5 stars 35 reviews

23,565 users

CodeBurner is a Firefox add-on that integrates with Firebug, to extend it with reference material for HTML and CSS.

Firecookie by Jan Odvarko

Rated 4 out of 5 stars 61 reviews

2,429 users

Firecookie is an extension for Firebug that makes possible to view and manage cookies in your browser

Firecookie is part of Firebug since Firebug 1.10

Toggle Web Developer Toolbar by Baris Derin

Rated 5 out of 5 stars 6 reviews

10,995 users

Toggle Web Developer Toolbar has been specially designed for web developers to provide easy to use methods to toggle Web Developer toolbar so that they can preserve their browser view area when they do not use Web Developer toolbar.

SenSEO by Nico Steiner

Rated 4 out of 5 stars 41 reviews

5,349 users

SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.
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