WCAG 2.0 is a set of guidelines from the World Wide Web Consortium, the organisation that creates standards for web technologies and languages such as HTML and CSS. The guidelines are a range of recommendations for making web content accessible to people with a range of disabilities, including visual, auditory, physical, speech, cognitive, language, learning, and neurological disabilities. These people may be using a range of assistive technologies. This particular version of WCAG is designed to be independant of technology and any particular disability, so you do not need to worry about how someone may be using your web resources, although it is useful to know why you should. The mean of doing this with particular technologies is set out in the WCAG techniques.
WCAG 2.0 is divided into four principles and 12 guidelines:
WCAG 2.0 contains what are called layers of guidance. Each of the 12 guidelines has several testable success criteria, which are classified according to a conformance or priority level. These levels, Single A (lowest), Double A (AA) and Triple A (AAA, the highest), relate to the impact on the user if they are not met. Each criterion contains many techniques, relating to different technologies, describing how to meet them. The techniques are sorted into those that are sufficient to meet the criteria, and those that are advisory. Advisory techniques enhance accessibility, but are not testable.
Authorised by the Associate Director, Service Delivery & Support
7 March, 2012