HTML Checking for Large Sites

Rocket Validator automatically checks your pages on the W3C Validator.

Bad value for attribute “src” on element “img”: Illegal character in scheme data: “<” is not allowed.

The src attribute on an <img> element contains an invalid character, that should be properly encoded as a URI percent-encoded character.

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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.