Web Developer is of the most helpful browser extensions for anyone building websites.

Web Developer provides you with entire suite of web design tools. You can use Web Developer to inspect CSS, analyze images, quickly validate a web design for W3C compliance or measure design elements.

This add-on is available for Chrome, Firefox and Opera, and will run on Windows, OS X and Linux. Web Developer will help you analyze any time of sites, whether you're using WordPress, Drupal, Joomla or another platform.

In this class, Topher takes us through the most important aspects of Web Developer, giving you an invaluable tool for analyzing and improving your websites.