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WCAG 2.0 uses the same three levels of conformance (A, AA, AAA) as WCAG 1.0, but has redefined them. The WCAG working group maintains an extensive list of web accessibility techniques and common failure cases for WCAG 2.0. [24] WCAG 2.1 is backwards-compatible with WCAG 2.0, which it extends with a further 17 success criteria.
The current VPAT has expanded to include the U.S. Revised Section 508, European EN 301 549, and WCAG standards which are required by regulations in many jurisdictions. It is available in four editions: WCAG edition - For reporting compliance to the W3C Web Content Accessibility Guidelines 2.0 or 2.1.
The Web Content Accessibility Guidelines 1.0 (known as WCAG) were published as a W3C Recommendation on 5 May 1999. A supporting document, Techniques for Web Content Accessibility Guidelines 1.0 [35] was published as a W3C Note on 6 November 2000. WCAG 1.0 is a set of guidelines for making web content more accessible to persons with disabilities.
Previous versions of EN 301 549 embraced WCAG 2.0 as an ‘electronic attachment’. The next version of EN 301 549 (v4.1.1) will be released in 2026. [11] This new version is planned to support the European Accessibility Act and to include WCAG 2.2 AA, as well as significant updates to requirements related to Real-Time Text. [12]
WCAG 2.0: 4 principles that form the foundation for web accessibility; 12 guidelines (untestable) that are goals for which authors should aim; and 65 testable success criteria. [14] The W3C's Techniques for WCAG 2.0 [ 15 ] is a list of techniques that support authors to meet the guidelines and success criteria.
The approach to make Wikipedia accessible is based on the W3C's official WCAG 2.0 (a.k.a. ISO/IEC 40500:2012) and ATAG 2.0 guidelines. The guidelines provided by this accessibility project are merely an attempt to reword the WCAG 2.0 into a guideline hopefully easier to understand for editors who are not familiar with accessibility or web development.
The Common Look and Feel (CLF) Standards for the Internet have been replaced with four Web Standards that incorporate current web practices such as WCAG 2.0, as well as designing for a plethora of devices, browsers and assistive technologies through which people navigate the Web.
[WCAG 2] Row and column headers ( ! ) Like the caption, these help present the information in a logical structure to visitors. [WCAG 3] The headers help screen readers render header information about data cells. For example, header information is spoken prior to the cell data, or header information is provided on request.