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Accessibility Glossary

WCAG criteria, patterns, and standards — with interactive demos, detection methods, and audit data.

Grid List

WCAG principle 1 of 4 (POUR): information and interface must be presentable in ways people can perceive — through sight, sound, or touch.

13 terms

A

Alternative Text Essential 54% audit fail rate 1.1.1 Perceivable Audio Descriptions 1.2.5 Perceivable

C

Captions & Transcripts 1.2.2 Perceivable Color Contrast Essential 84% audit fail rate 1.4.3 Interactive Perceivable

H

Heading Structure 1.3.1 Perceivable

I

Images of Text 1.4.5 Perceivable Info & Relationships Essential 60% audit fail rate 1.3.1 Perceivable

L

Landmark Regions 1.3.1 Perceivable

N

Non-text Contrast 1.4.11 Perceivable

R

Reflow 1.4.10 Perceivable

S

Sensory Characteristics 1.3.3 Perceivable

T

Text Spacing 1.4.12 Perceivable

U

Use of Color 1.4.1 Perceivable