Accessibility Standards
A reference guide to the key accessibility standards and regulations that govern digital content. Understanding these standards is essential for building compliant, inclusive experiences.
Web Content Accessibility Guidelines 2.1 Level AA
The international standard for web accessibility. WCAG 2.1 AA is referenced by most accessibility laws worldwide and covers perceivable, operable, understandable, and robust criteria for web content.
Scope: Websites, web applications, mobile apps
Official resource →Section 508 of the Rehabilitation Act
U.S. federal law requiring federal agencies and contractors to make electronic and information technology accessible. Aligns with WCAG 2.0 AA since the 2017 refresh.
Scope: U.S. federal agencies and contractors
Official resource →PDF/UA (ISO 14289-1)
The international standard for accessible PDF documents. Defines requirements for tagged PDF structure, reading order, alternative text, and document metadata.
Scope: PDF documents
Official resource →ADA Title II Web Accessibility Rule
The 2024 Department of Justice rule requiring state and local government websites and mobile apps to conform to WCAG 2.1 AA. Includes phased compliance deadlines based on population size.
Scope: State and local government entities
Official resource →