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.

50,000 Accessibility and HTML checks per month. Fully automated.

Let our automated scanner check your large sites using Axe Core and W3C Validator.

Bad value X for attribute “(width | height)” on element “img”: Expected a digit but saw “.” instead.

The attributes width and height on <img> elements define the dimensions of the image in CSS pixels, and expect a non-negative integer.

Learn more:

Related W3C validator issues

50,000 Accessibility and HTML checks per month. Fully automated.

Let our automated scanner check your large sites using Axe Core and W3C Validator.