The World Wide Web Consortium publishes updated methodology for evaluating web accessibility
The World Wide Web Consortium (W3C) has published WCAG Evaluation Methodology (WCAG-EM) 2.0 as a Group Note, providing a structured approach for assessing whether websites and other digital products conform to the Web Content Accessibility Guidelines (WCAG) 2.
The Accessibility Guidelines Working Group of the World Wide Web Consortium (W3C) has published WCAG Evaluation Methodology (WCAG-EM) 2.0 as a Group Note, offering updated guidance on how to evaluate the accessibility of digital products against the Web Content Accessibility Guidelines (WCAG) 2.
The methodology provides a technology-neutral, step-by-step process for conducting accessibility evaluations. It outlines how evaluators should define the scope of an assessment, examine the digital product, select a representative sample of pages or components, assess the selected content against WCAG 2 success criteria, and document the findings in a structured report.
The guidance is intended for a wide range of evaluation scenarios, including internal self-assessments by organisations, independent third-party accessibility audits, and procurement or compliance reviews. By establishing a consistent evaluation process, the methodology aims to improve the quality and comparability of accessibility assessments across different sectors and technologies.
The document does not introduce new accessibility requirements or modify the existing WCAG 2 standards. Instead, it focuses solely on the evaluation process, while the technical accessibility requirements remain defined by the WCAG success criteria and related supporting documents.
Published as a Group Note, the document represents guidance developed by the W3C Accessibility Guidelines Working Group. Unlike a W3C Recommendation, a Group Note is not a normative standard but serves as an informational resource and a collection of best practices to support consistent implementation.
What does this mean?
The publication does not change the accessibility rules that websites or applications must meet. Instead, it standardises how accessibility should be tested.
For example, two different accessibility auditors reviewing the same website could previously use different testing approaches and reach different conclusions. WCAG-EM 2.0 provides a common methodology for deciding:
- what parts of a website or application should be tested;
- how to select representative pages or features;
- how to conduct the evaluation consistently; and
- how to report the results.
In practice, this means that organisations can perform more consistent accessibility audits, while regulators, procurement bodies, and customers can have greater confidence that evaluations are based on a transparent and repeatable process. Although the methodology is not legally binding, it is likely to become a widely used reference for accessibility assessments and WCAG 2 compliance.
