Web Development

by s1u2b3h4

16 Add-ons in this Collection

Greasemonkey by Anthony Lieuallen

Rated 4 out of 5 stars 1,622 reviews

645,491 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 4 out of 5 stars 2,668 reviews

801,040 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...

Stylish - Custom themes for any website by userstyles.org

Rated 4 out of 5 stars 1,295 reviews

316,172 users

Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.

Web Developer by chrispederick

Rated 4 out of 5 stars 486 reviews

251,382 users

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

HttpFox by Martin Theimer

Rated 4 out of 5 stars 210 reviews

36,111 users

An HTTP analyzer addon for Firefox

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 367 reviews

58,220 users

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

Font Finder by Ben Dodson, Eric Caron, others

Rated 4 out of 5 stars 79 reviews

17,405 users

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.

YSlow by YSlow

Rated 3 out of 5 stars 212 reviews

23,300 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.

Rainbow Color Tools by Heather Arthur

Rated 5 out of 5 stars 98 reviews

10,060 users

This addon is no longer being updated and won't work with new versions of Firefox. See the Colorzilla addon for a replacement: https://addons.mozilla.org/en-US/firefox/addon/colorzilla/.

Color tools for web development.

View Source Chart by Jennifer Madden

Rated 5 out of 5 stars 114 reviews

4,480 users

Enables accelerated human processing of DOM

Firepicker by thedarkone2

Rated 5 out of 5 stars 56 reviews

4,530 users

Simple color picker plugin for Firebug.

Aardvark by Rob Brown

Rated 5 out of 5 stars 150 reviews

333 users

Cool utility for cleaning up a page (for printing or better viewing) as well as for web development. Displays a red rectangle on the element under the mouse -- hit "w" to go wider (get the containing element), then hit other keystrokes to remove, etc

Juicy Studio Accessibility Toolbar by Gez Lemon

Download Now

Experimental

Rated 5 out of 5 stars 14 reviews

857 users

The toolbar enables developers to examine WAI-ARIA live regions roles and properties, examine data tables, and determine if the colour contrast is sufficient.

View Dependencies by Florian QUEZE

Rated 4 out of 5 stars 33 reviews

1,437 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.

FireRainbow by BinaryAge, Jan Odvarko

Rated 4 out of 5 stars 42 reviews

969 users

Javascript syntax highlighting for Firebug
  1. 1
  2. 2
Results 115 of 16

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

More by this User

See all collections by this user