HTML Checking for Large Sites
Rocket Validator integrates the W3C Validator HTML checker into an automated web crawler.
Related W3C validator issues
A <span> tag has not been closed. Example:
<p><span>I'm forgetting something</p>
<p>Life goes on</p>
Still checking your large sites one page at a time?
Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.