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These pages build vocabulary and deepen understanding of why things are done a specific way — before you touch the code. Accessibility isn't a checklist; it's a design practice with real humans behind it. Start here to meet those humans and understand the standards built for them.

Who the web is for

Meet the people WCAG is designed to help — disability types, the social model of disability, and why accessibility is a design concern for everyone.

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What is WCAG?

The Web Content Accessibility Guidelines explained: the four POUR principles (Perceivable, Operable, Understandable, Robust), where the standard came from, and where to go deeper.

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How assistive tech works

How screen readers parse HTML, what gets announced and why, keyboard navigation, other assistive tools — and the emoji chaos problem.

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