What is the Difference Between Bobby and the HTML Validator?
The HTML validator checks that the HTML code of a web page is well-structured according to one of the HTML specifications. Bobby evaluates web pages for accessibility to users with disabilities. It checks for the presence or absence of particular features, or their characteristics, but does not check HTML syntax. Nevertheless, because Bobby evaluates HTML it is important that there not be HTML errors. If you have difficulty using Bobby on your page, the HTML validator may uncover the cause of the problem.