Total Validator - Total Validator can check your website to help ensure that it is accessible, uses valid HTML and CSS, has no broken links, and is free from spelling mistakes.
accessiBe - Making websites accessible to people with disabilities
W3C Markup Validation Service - Validates HTML markup of web pages, one at a time.
Sim Daltonism - From the perspective of a color blind person, some colors are impossible to distinguish.
Rocket Validator - Site-wide Accessibility and HTML validation made easy. With a single click, Rocket Validator will check thousands of web pages on your site for Accessibility and HTML conformance, producing a detailed, actionable report on seconds.
Colour Blindness Simulator - Use our Colour Blindness Simulator to reveal how your images may appear to users with a variety of...