Proposed Advancement of Accessibility Conformance Testing (ACT) Rules Format 1.1 to W3C Recommendation

Today, the W3C Team proposed advancing the Accessibility Conformance Testing (ACT) Rules Format 1.1 to W3C Recommendation. Published by the Accessibility Guidelines Working Group as a Candidate Recommendation Snapshot on 19 August 2025, this document defines a format for writing accessibility test rules. The test rules can be used for developing automated testing tools and manual testing methodologies. This document provides a common format that allows anyone involved in accessibility testing to document and share their testing procedures in a robust and understandable manner. This enables transparency and harmonization of testing methods, including methods implemented by accessibility test tools.