ISO/IEC 40500 (2012-10)

ISO/IEC 40500:2012 [Web Content Accessibility Guidelines (WCAG) 2.0] covers a wide range of recommendations for making Web content more accessible. Following these guidelines will make content accessible to a wider range of people with disabilities, including blindness and low vision, deafness and hearing loss, learning disabilities, cognitive limitations, limited movement, speech disabilities, photo-sensitivity and combinations of these. Following these guidelines will also often make your Web content more usable to users in general.
WCAG 2.0 success criteria are written as testable statements that are not technology-specific. Guidance about satisfying the success criteria in specific technologies, as well as general information about interpreting the success criteria, is provided in separate documents.
An overview of WCAG 2.0, the WCAG 2.0 standard, technical and education material supporting implementation of WCAG 2.0, and information on translating WCAG 2.0, are freely available from Web Content Accessibility Guidelines (WCAG) Overview.