Accessibility guides

WCAG explained with code, for the people who build and audit websites.

Fundamentals

What Is WCAG? A Plain-English Guide to 2.0, 2.1 and 2.2

WCAG can feel overwhelming. This guide breaks the Web Content Accessibility Guidelines into plain English: conformance levels A, AA and AAA, the four core principles, and what you actually need to meet.

December 15, 2025
Fundamentals

What Is Web Accessibility? Definition and Why It Matters

An estimated 1.3 billion people experience significant disability, and web accessibility decides whether they can use the sites you build.

December 8, 2025

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