Web Content Accessibility Guidelines

The WCAG explains how to make information in a web page (or web application) accessible to people with disabilities.  This includes text, images, forms, sounds, etc.

The guidelines outline principles of accessible design with prioritized checkpoints assigned to each.  The priority levels determine the impact of each checkpoint on accessibility.

Implementation guidance for all checkpoints is provided by WCAG documents covering Core techniques, HTML techniques and CSS techniques.

WCAG Version 1.0 was approved in 1999.  Version 2.0, expected in 2006, improves on recent technologies, interpretation and testability.