Research Based Web Design and Usability Guidelines

A current handbook that explains every WCAG 2.2 success criterion with illustrated examples of what passes and what fails. The clearest reference here if you have to meet an accessibility standard.

Digital Policy Office

An open textbook on building accessible interactivity: testing with a screen reader, using WAI-ARIA landmarks and live regions, and creating accessible progress bars, tooltips, and suggestion boxes. Covers graceful degradation and progressive enhancement.

Greg Gay and Igor Karasyov

Explains why accessibility matters, clears up the common myths, and turns the WCAG guidelines into plain language a designer can act on. A good first read before the technical standards.

Aayush Shrestha

A guide to writing and designing sites that work for readers with limited literacy, built on testing with real participants. The plain language and layout advice transfers to any audience you cannot afford to lose.

Office of Disease Prevention and Health Promotion