Web Development

by Seán Hayes

14 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,760 reviews

2,705,498 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 205 reviews

673,184 users

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

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 300 reviews

299,476 users

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

Live HTTP Headers by Daniel Savard, Nikolas Co

Rated 4 out of 5 stars 154 reviews

201,808 users

View HTTP headers of a page and while browsing.

YSlow by YSlow

Rated 3 out of 5 stars 181 reviews

130,032 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.

FirePHP by cadorn

Rated 4 out of 5 stars 45 reviews

66,076 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/

DOM Inspector by SeaMonkey Council

Rated 5 out of 5 stars 60 reviews

153,772 users

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

View Source Chart by Jennifer Madden

Rated 5 out of 5 stars 103 reviews

18,315 users

Inspect the DOM at lightning speed.

XML Developer Toolbar by Scott Root II

Rated 4 out of 5 stars 9 reviews

8,572 users

The XML Developer's Toolbar!!...

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 47 reviews

12,496 users

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

GridFox by Eric Puidokas

Rated 4 out of 5 stars 16 reviews

8,703 users

Draws a grid on top of a website

View Dependencies by Florian QUEZE

Rated 5 out of 5 stars 31 reviews

8,298 users

View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.

Color Management by Seán Hayes

Rated 4 out of 5 stars 43 reviews

7,173 users

Provides a GUI front end for enabling color management in Firefox and Songbird.

Inspect Context by max1million

Rated 5 out of 5 stars 14 reviews

1,759 users

Open Dom Inspector at this node from Inspect on context menu. Dom Inspector must already be installed. Handy for checking both page for web developers and chrome for extension...

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