Essential Firefox Add-ons for Web Developers

Firefox has some cool add-ons which make the job of website designers much easier. These add-ons are definitely going to improve your work-flow and enhance your overall internet browsing experience. Don’t miss this chance to work quicker and better!

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
The Web Developer extension adds a menu and a toolbar with various web developer tools.

Advanced Eyedropper, Color Picker, Palette Viewer and other colorful goodies for your Firefox.

FireShot is an advanced screen capture add-on for Firefox. In addition to giving you the ability to capture an entire web page, FireShot also allows you to add add graphics and notes directly to your screen captures.

Get the feel of Dreamweaver in a Firefox extension. Edit your documents right next to your web pages as you surf.

CSS Validator
Validates a page using the W3C CSS Validator.

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.

W3C Offline Page validator
Validates the source of a HTML/XHTML page via the W3C Markup Validation Service using the direct-input form.

Allows you to customize the way a webpage displays using small bits of JavaScript.

Draws a grid on top of a website. This is useful for checking designs that are supposed to follow a grid-based layout.

HttpFox monitors and analyzes all incoming and outgoing HTTP traffic between the browser and the web servers.

A simple CSS property viewer.

IE NetRenderer

If you are like me and design your sites for Firefox then this is a great tool for you. IE NetRenderer will create you an image of how the website looks in IE 5.5, 6, 7 and 8 so you can get an idea of whether or not it looks right in IE.

Foxy SEO Tool
Foxy SEO Tool offers tools for search engine optimization (SEO), web traffic and page analysis for webmasters and web professionals.

Optimize your stylesheet

If your website uses large stylesheets, optimizing the CSS code can help your code to load and render faster. CSS shortcuts shortern the cascading stylesheets rules into one efficient line of code.


font-weight: normal;
font-size: 14px;
line-height: 12px;
font-family: arial, verdana;

You can simply use:

font: normal 14px/12px arial, verdana;

Background Images


Can be shortened to:

background: #f1f1f1 url(images/Vikas.gif) repeat-x top;


border-width: 1px;
border-color: #e0e0e0;
border-style: solid;

border: 1px solid #e0e0e0;


padding-top: 10px;
padding-right: 5px;
padding-bottom: 20px;
padding-left: 5px;

Use a single line of code, like this:

padding: top right bottom left;

padding: 10px 5px 20px 5px;

The margin or padding shortcut can be be shortened further.

margin: top right bottom left;
margin: 10px 20px 10px 20px;

Can be shortened to:

margin: top/bottom right/left;
margin:10px 20px;

You can even take this one step further.

margin: top/bottom/right/left;

If you do not want any margins or padding with a web object, you can set all of the values to zero.

margin: 0;
padding: 0;


color: #000000;

color: #000

color: #FFCC00;

color: #FC0;