Web Development

by Seán Hayes

14 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,828 reviews

2,370,282 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 228 reviews

545,410 users

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

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 306 reviews

298,566 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 168 reviews

166,191 users

View HTTP headers of a page and while browsing.

YSlow by YSlow

Rated 3 out of 5 stars 203 reviews

93,679 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 48 reviews

49,050 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 66 reviews

136,162 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 110 reviews

14,131 users

Inspect the DOM at lightning speed.

XML Developer Toolbar by Scott Root II

Rated 4 out of 5 stars 9 reviews

5,487 users

The XML Developer's Toolbar!!...

Console² by Philip Chee, zeniko

Rated 5 out of 5 stars 49 reviews

8,858 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.

Color Management by Seán Hayes

Rated 4 out of 5 stars 43 reviews

6,351 users

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

GridFox by Eric Puidokas

Rated 4 out of 5 stars 18 reviews

5,234 users

Draws a grid on top of a website

View Dependencies by Florian QUEZE

Rated 4 out of 5 stars 34 reviews

4,711 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.

Inspect Context by max1million

Rated 5 out of 5 stars 15 reviews

1,370 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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