Validation Tools

What tools are people using to validate their web pages? In Refactoring HTML so far I’m writing about four, somewhat related tools:

• W3C Validator
• LogValidator
• xmllint
• The button/menu item in your editor that says “Validate this document”

Anything else worthy of mention? In particular, is there anything significantly different enough from these four that it deserves to be called out separately? Or is there anything better that should replace one of these options? (This is a relatively small book, and I am trying very hard not to cover absolutely every possibility and option.) Open source tools are strongly preferred.

This entry was posted on Monday, February 26th, 2007 at 11:00 AM and is filed under Web Development. You can follow any responses to this entry through the Atom feed. You can make a comment, Digg this story, or trackback from your own site.