Standards

WCAG 2.1 accessibility guidelines document shown with annotated success criteria levels

Accessibility June 5, 2026

WCAG 2.1 for Developers: Success Criteria and What They Require

A developer-focused reference for WCAG 2.1 — what the 17 new success criteria added in 2.1 require, how they relate to 2.0, and what Level AA conformance means …

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