Here is a free Mac OS X utility by Todd Ditchendorf for all you concerned web designers out there. XML Nanny allows you to validate your XML and XHTML documents (either locally or over a network) via ...

Web developer Mark Wilkie releases the w3ctextarea Firefox extension, which validates HTML entered into a web form. Many bloggers know that one mistake or unclosed tag in a post can bork up a site's ...

I'm trying to validate this page as XHTML1.0 strict and I'm having trouble trying to decipher what it's telling me I'm doing wrong. Here's the validation page. First, the encoding thing. I don't have ...