Web Accessibility Testing – Online Tool or Real User Testing?
Using online tools for a web accessibility test can’t give you the complete status of the WCAG or Section 508 compliance of your website. Some of the elements in accessibility testing are subjective. An online web accessibility test can only check if certain elements are present, not if they bring value to using the content by a user with a disability. See below how big the difference is in using online web accessibility tools versus actual human testers.