Stylized line drawing of mark playing the flute

Short list of required web developer tools

While there are plenty of more comprehensive lists out there, there are a few tools I use for web development on a daily basis that are worth talking about.


The number one is obviously Firebug. Doing web development without is like developing with a rock on an etch-a-sketch.

Some favorite features

  • Easily print messages to the Firebug console.

  • View (and even modify) HTML and CSS in a nice structured way.

  • View network activity and page speed using the Net panel. You can get more page speed information using YSlow or PageSpeed.


FirePHP is a plugin for Firebug that lets you log messages to the Firebug console using server-side PHP calls. Fantastic for simple debugging. SixRevisions has an excellent guide on setting it up.

Web Developer tools

This is another must-have with too many features to list. Some of my favorites are:

  • Easily clear domain, url, & session cookies for the current page.
  • Turn styles on and off.
  • Automatically populate HTML form fields.
  • Lots of information about how elements are rendering on the page.

Html Validator

A handy Firefox add-on that automatically validates the HTML of a page. It also improves Firefox's "View Source" interface.

Screen Calipers

Nice, stand-alone desktop app for measuring pixel distance.



Great desktop app from Iconico for picking colors from the screen. Also handy as a general purpose screen-zoom tool.


I'm sure people out there have their own favorite tools and I'd love to hear about them.