Slide4-9 Accessibility Testing Standard
The Web Accessibility Initiative (WAI), is a group within the World Wide Web Consortium (W3C), that develops strategies, standards, and support resources to make the web accessible to people with disabilities.It always seems impossible until it's done.
Nelson Mandela (18 July 1918 – 5 December 2013)
The WCAG 2.2 has 13 guidelines. The guidelines are organized under 4 principles: perceivable, operable, understandable, and robust. For each guideline, there are testable success criteria. The success criteria are at three levels: A, AA, and AAA.
Web Content Accessibility Guidelines (WCAG) 2.2