HTML Checking for Large Sites

Rocket Validator automatically checks your pages on the W3C Validator.

Bad value X for attribute “href” on element “a”: Invalid host: Illegal character in domain: space is not allowed.

An href attribute on an a element contains an invalid URL that has space characters in the domain.

The domain in a URL cannot contain space characters, for example the following are invalid:

<a href="http://my domain.com">link</a>
<a href="http://my%20domain.com">link</a>

25,000 HTML checks per month. Is that enough for your site?

Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.