<P> The Web Content Accessibility Guidelines (WCAG) are part of a series of web accessibility guidelines published by the Web Accessibility Initiative (WAI) of the World Wide Web Consortium (W3C), the main international standards organization for the Internet . They are a set of guidelines that specify how to make content accessible, primarily for people with disabilities--but also for all user agents, including highly limited devices, such as mobile phones . The current version, WCAG 2.0, was published in December 2008 and became an ISO standard, ISO / IEC 40500: 2012 in October 2012 . WCAG 2.1 is a "Proposed Recommendation" as at April 2018 . </P> <P> The first web accessibility guideline was compiled by Gregg Vanderheiden and released in January 1995, just after the 1994 Second International Conference on the World - Wide Web (WWW II) in Chicago (where Tim Berners - Lee first mentioned disability access in a keynote speech after seeing a pre-conference workshop on accessibility led by Mike Paciello). </P>

When was the wcag 2.0 guidelines rolled out