HTML Checking for Large Sites
Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as srcset.
The sizes
attribute is used to complement the srcset
attribute on an <img>
tag for responsive images, therefore it’s not valid if srcset
is missing. Check the HTMLImageElement.srcset guide to learn about the correct usage of the srcset
and sizes
attributes.
Check the HTMLImageElement.srcset guide to learn about the correct usage of the srcset
and sizes
attributes.
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.