Adaptive skill practice — find your level, get sharper.

Web Accessibility practice

Build interfaces everyone can use — WCAG, ARIA, and focus done right

Digital accessibility the way real audits and frontend interviews test it — WCAG 2.2 and its A/AA/AAA structure, the POUR principles, semantic HTML before ARIA, correct ARIA (accessible names, roles, states, live regions), keyboard operability and focus management (modals, roving tabindex, focus restoration), contrast and visual criteria, accessible forms and errors, and the screen-reader interaction model plus audit methodology. Grounded in the W3C specs (WCAG 2.2, WAI-ARIA, the Authoring Practices Guide) and MDN. Educational practice on how the standards work — not legal advice.

• Meets you at your level — never too easy, never too hard.

• Adapts every question to how you’re doing.

• Tracks your level over time. Skill practice, not a test.

New here? Read the Web Accessibility guide

A free 17-minute primer — the mental model, the mistakes beginners make, and what to practise first.

Curriculum

139 concepts across 23 chapters, from foundations through advanced practice — each one a concept the adaptive question bank can teach and test.

A. Foundations: disability and the standards family

B. Conformance: what a "WCAG 2.2 AA" claim actually asserts

C. Text alternatives (1.1.1)

D. Time-based media (1.2.x)

E. Structure, relationships and reading order (1.3.x)

F. Color and contrast (1.4.1, 1.4.3, 1.4.6, 1.4.11)

G. Resize, reflow and adaptable presentation (1.4.4–1.4.13)

H. Keyboard operability (2.1.x)

I. Timing, motion and seizures (2.2.x, 2.3.x)

J. Navigation, focus order and focus visibility (2.4.x)

K. Pointer input, gestures and target size (2.5.x)

L. Readable text (3.1.x)

M. Predictable behavior (3.2.x)

N. Forms, error handling and authentication (3.3.x)

O. Robust: name, role, value and status messages (4.1.x)

P. The accessibility tree and how ARIA works

Q. ARIA attributes in practice

R. Accessible name and description computation

S. Live regions and dynamic announcements

T. APG patterns and their keyboard contracts

U. Assistive technology behavior

V. Testing and evaluation method

W. Mobile and native accessibility

View the full curriculum →

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