Use Firebug & 6 Best Firebug Extensions for better Web Development

Written By Sam on 11 May 2009

Firebug is one of the popular Firefox addon which is used by many web developers. Firebug easily integrates with Firefox and provides you with many web development tools to make your life easy as a web developer. You can edit, debug and monitor CSS, HTML and JavaScript live in any web page with the help of Firebug.


I love to use Firebug when I’m tweaking the CSS of a webpages. Firebug’s CSS tabs will allow you to edit CSS styles very quickly. Firebug shows you the rules that cascade together to style each element which will make debugging very easier. With Firebug you can Inspect and edit HTML elements, Visualize CSS metrics, Monitor network activity, Debug and profile JavaScript, Quickly find webpage errors, Explore the DOM objects and Execute JavaScript on the fly.

There are some extensions for Firebug which will be very helpful at times. Here are some of them which I use currently.

YSlowYahoo YSlow can be used to test the performance of a website and thus make changes to speed up your website. YSlow gives suggestions for improving the webpage’s performance, summarizes the components present in the page, displays statistics about the page and provides tools for performance analysis.

SenSEO – SenSEO analyzes your web pages to tell you how good they fulfill on-page Search Engine optimization criteria. SenSEO gives you an overview of SEO-important web page components, analysis of on-page SEO criteria, correct usage of meta description and meta keywords.


Firediff – Firediff allows you to track changes to a pages DOM and CSS. It implements a change monitor to records the changes made by firebug and the application itself to CSS and the DOM. You can use this information to debug and tweak the page’s display.

Firecookie – Firecookie helps you to view and manage cookies in your browser. It displays a list of all cookies associated with the currently displayed website. It displays basic information about a cookie such as name, value, domain, expire date, etc. You can use it to inspect cookies, view cookie permissions, events, Expire Time and many more.

FireRainbow – It is a Firebug extension to show syntax highlighting. Though this extension doesn’t do much it makes very easier for you to analyze or modify the code.

FirePHP – FirePHP enables you to log Firebug console by using a simple PHP method call. It will send all the data via response headers and will not interfere with your page content. It is well suited for AJAX development where clean JSON and XML responses are required. It requires PHP library to send the debugging messages.

3 Responses to “Use Firebug & 6 Best Firebug Extensions for better Web Development”

  1. […] If you are keen on REALLY finding out how web sites work, also check out Firebug. It will show you download speeds of particular files, allow you to inspect any element of a page etc and is a power house of nifty functions. It even comes with plugins of its own. You can read more about that over at Tech Hail. […]

  2. i recently released a firebug addon at the mozilla addon sandbox, which saves css- changes to a web- server via a web service, check it out:

    I would appreciate any bug reports, comments, ratings, discussion on this,

    thanks in advance,

  3. nitinsingh says:

    it is a popular Firefox addon It will show you download speeds of particular files

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