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Useful FireFox add-ons for web developers

By: OSH Editorial    In: Browser Tools

Karma - Responsive bootstrapped webapp

I make a living by building website/apps so i really like to do some things fast and easy that’s why i use a couple of FireFox add-ons in my FireFox brouwser.

By using add-ons in my FireFox brouwser i can test, validate, debug, measure, autofill forms, upload and much more in my brouwser without using other applications/programs(i dont like a crowded toolbar). I will name a couple of them which i really like and find very useful.

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There are many more developer add-ons but i won’t name them all, check here for a more developer add-ons.

Also a very useful FireFox add-on is one of our sponsors(big add on you right so you cant mis it). Visit there site and test it for your self.


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.

Go to this add-on


Advanced Eyedropper, ColorPicker, Page Zoomer and other colorful goodies. With ColorZilla you can get a color reading from any point in your browser, quickly adjust this color and paste it into another program.

Go to this add-on

Web Developer

Adds a menu and a toolbar with various web developer tools.

Go to this add-on

CodeBurner for Firebug

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

Go to this add-on


YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with the Firebug web development tool.

Go to this add-on

Html Validator

HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing.

Go to this add-on

Extended Statusbar

A Statusbar with speed, percentage, time and loaded size (similar to Opera’s one)

Go to this add-on

Autofill Forms

Autofill Forms enables you to fill out web forms with one click or a keyboard shortcut.

Go to this add-on

Clear Cache Button

Adds a clear cache toolbar button. After installing the extension, find the clear cache button in the toolbar customization panel.

Go to this add-on


FireFTP is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

Go to this add-on

Live HTTP Headers

View HTTP headers of a page and while browsing.

Go to this add-on

Written by: OSH Editorial

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1 Comment

Mike R

May 10, 2009

Nice list with some really usefull extentions. I am gona try a couple of them for sure.


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