The HTML Working Group has published a Candidate Recommendation of the HTML5 Image Description Extension, which defines the “longdesc” attribute that enables web authors to provide longer textual descriptions for complex images. This specification is part of W3C’s work to ensure that the Open Web Platform is accessible to people with disabilities. This publication addresses comments received during Last Call, and invites implementations. It is developed by the HTML Accessibility Task Force in coordination with the HTML Working Group and the WAI Protocols and Formats Working Group (PFWG). Please see details in the Call for Implementations: HTML5 Image Description Extension (longdesc) e-mail. Additional implementations are welcome through 26 August 2014. Learn more about the HTML Activity and the Web Accessibility Initiative (WAI).