Posted by: lrrp | June 20, 2007

My Favorite Firefox Extensions

Firefox is a great Web browser. It offers good Web standards support and is open source. As a Web developer who regularly creates templates/themes based on Photoshop designs, Web standards compliance is a very important aspect and one of the reasons I hate Internet Explorer. As a person who believes in the spirit of open source, it is also important that Firefox is open source software.

The speed of Web page rendering is not the biggest strength of Firefox, there are other browsers that render pages more quickly, but the most important aspect, that makes Firefox incomparably useful are the free extensions available.

Get Firefox

Cool Firefox Extensions

Below I list the ones I am using for making my life as a Web developer easier and my browsing experience better.


Firebug is an amazing extensions I can’t imagine living without Firebug when developing Web applications. Firebug enables you to edit, debug, and monitor CSS, HTML, and JavaScript live in any Web page. I can’t list all of the cool features Firebug comes with, but the ones that are most important to me:

  • Displaying which CSS rules actually apply to the currently selected HTML element and changing the values to immediately see the effects.
  • Debugging JavaScript, setting breakpoints, and testing code before adding it to a live site.
  • Monitoring load times of the executed HTTP requests and their order of execution.

If you are a serious Web developer, Firebug is a must have extension.

Get Firebug

Web Developer

The Web Developer extension was one of the first I used to facilitate my work. It adds lots of convenience features in form of a toolbar. The following Web Developer Toolbar features are most useful to me:

  • Quick links to validation services for the currently displayed page.
  • Resizing the browser window to customizable screen sizes.
  • Disabling JavaScript, images, and CSS to see what a page looks like in a text browser or for robots.
  • Disabling referrer information in HTTP requests.
  • Disabling and clearing session cookies.
  • Displaying various information for the currently displayed page, such as DIV order, ID and class details, and many more.

The Web Developer Toolbar is an extension I definitely would not want to miss.

Web Developer Toolbar


I use the ColorZilla extensions for retrieving the hex code of the color value I point my mouse cursor over on the page currently displayed. This add-on offers more features, but I only use the one mentioned, which I find very useful.

ColorZilla Color Picker

Link Counter

The Link Counter extensions allows you to copy all links as a plain text or unordered HTML list of the URLs displayed on a page. You can choose all links, internal or external links only. Very useful for writing posts on .edu-Domains. Bookmarks

I use to manage and access my bookmarks from any computer that is connected to the Internet. The Bookmarks extension makes it easy to add and search my bookmarks without actually visiting the Website. Bookmarks

Download Statusbar

With the Download Statusbar I won’t see the default download pop-up window that comes with Firefox. It offers more features that I don’t use, mainly because I have not checked them out so far.

Get Firebug

HTML Validator

The HTML Validator extensions tells whether the page currently displayed validates as HTML or XHTML when taking a look at the page source.

HTML Validator


MeasureIt adds a ruler to get the pixel width and height of any element or region on a Web page.

Get Firebug

Save As Image

The Save As Image extension enables you to save a page, frame, or part of either as an image. You can use this extension to create snapshots of the full page from top to bottom.

Save As Image


Last but not least I use the SearchStatus extension to retrieve SEO related information. SearchStatus displays the Google PageRank, Alexa rank (also affects it) and Compete ranking. SearchStatus comes with a keyword density analyzer, offers nofollow link highlighting, display of backward and related links, Alexa info, and much more.



  1. Firefox is a web browser which is very useful for the web designer…. who always use to doing the web designing works…..It is a open outsource software too!!!

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