Must-Have Web Dev Tools

by stuartherbert

29 Add-ons in this Collection

Firebug by Joe Hewitt, Jan Odvarko, others

Rated 5 out of 5 stars 1,784 reviews

2,426,742 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...

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 379 reviews

373,585 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

Web Developer by chrispederick

Rated 5 out of 5 stars 216 reviews

589,341 users

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

ReloadEvery by Jaap Haitsma

Rated 4 out of 5 stars 672 reviews

177,097 users

Reloads web pages every so many seconds or minutes. The function is accessible via the context menu (menu you get when you right click on a web page) or via tab context menu (right click on the tab)

ColorZilla by Alex Sirota

Rated 5 out of 5 stars 305 reviews

301,099 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 156 reviews

180,014 users

View HTTP headers of a page and while browsing.

MeasureIt by Kevin Freitas

Rated 4 out of 5 stars 333 reviews

159,791 users

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

JSONView by Ben Hollis

Rated 5 out of 5 stars 132 reviews

107,161 users

View JSON documents in the browser.

YSlow by YSlow

Rated 3 out of 5 stars 192 reviews

109,202 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 46 reviews

54,893 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/

Abduction! - Webpage Screenshots Screen Capture by M. Evans

Rated 4 out of 5 stars 520 reviews

48,535 users

1) Capture an page or just a specific region.
2) Adds a right click option to take screen shots of an entire web page or just part of a web page to save as an image.

VIDEO: http://youtu.be/vpnPvNShpWQ

Firefinder for Firebug by Robert Nyman

Rated 3 out of 5 stars 28 reviews

24,362 users

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

Firesizer by orev

Rated 4 out of 5 stars 124 reviews

32,484 users

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Dust-Me Selectors by brothercake

Rated 4 out of 5 stars 76 reviews

17,341 users

Dust-Me Selectors is development tool to remove unused CSS selectors.

Remove Cookie(s) for Site by Dwipal

Rated 4 out of 5 stars 58 reviews

18,203 users

A very simple extension to remove all the cookies of currently opened site. It adds an option to the Right Click menu of the page, and a Clear Cookies Button to perform this operation. It displays the status of operation in the status bar.
  1. 1
  2. 2
Results 115 of 29

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

Recently Viewed