HTML Checking for Large Sites

Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator, hosted on our own servers and integrated into our web crawler.

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.

Bad value X for attribute “href” on element “a”: Illegal character in query: “|” is not allowed.

The href attribute on an element <a> contains a | character, also known as vertical pipe.

This character is not allowed and should be replaced by its encoded alternative %7C .

Related W3C validator issues

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