This valuable freeware tool allows Web developers to check their Web pages for HTML errors. HTML Validator adds an unobtrusive icon in the right-hand corner of your Firefox window.

Hovering your mouse over the icon reveals errors and warnings for the page. Double-clicking the icon introduces a detailed window with the current Web page's lines of code, along with the errors and warnings found. The Options menu allows you to check the HTML page locally using different algorithms. A handy Help key explains what each symbol means, and novice users will appreciate the shortcut button to Htmlpedia. HTML Validator provided detailed error information for each Web page we checked. And using the Clean Up functionality, we were able to apply quick fixes to the code.

HTML Validator's straightforward design and effective presentation make it an easy tool to recommend for any Web developer, or those just interested in code.