Rocket Validator automatically checks your pages on the W3C Validator.
HTML issues tagged as checkbox.
required attribute can only be used with certain types of inputs. Check the input type is one of the allowed.
required attribute, if present, indicates that the user must specify a value for the input before the owning form can be submitted.
50,000 Accessibility and HTML checks per month. Fully automated.
Let our automated scanner check your large sites using Axe Core and W3C Validator.