Web accessibility is no longer just about serving users with disabilities, though that remains the most important reason to get it right. AI agents navigate websites using the same accessibility tree that screen readers rely on. A site with poor heading structure, missing alt text, and unlabeled interactive elements is not just inaccessible to humans; it is effectively invisible to the AI systems that browse, cite, and recommend content.

This category covers WCAG fundamentals, website accessibility practices, and the overlap between building for human users and building for AI agents, explained for site owners who are not developers.