HTML Checking for Large Sites

Rocket Validator automatically checks your pages on the W3C Validator.

HTML issues tagged as self-closing tags.

The <br> tag inserts a line break, and it’s self-closing so you can use either <br> or <br /> but </br> is invalid.

First line<br>
Second line<br />
Third line is invalid</br>

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.