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.

When was the last time you validated your whole site?

Keep your sites healthy checking for A11Y/HTML issues on an automated schedule.

The “center” element is obsolete. Use CSS instead.

The <center> tag is no longer valid in HTML, you should use CSS instead, for example:

<p style="text-align:center">this text will be centered</p>

Related W3C validator issues

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.