Digital Accessibility Glossary

A plain-language reference for business leaders, developers, and teams working toward digital accessibility and ADA compliance.

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33 terms in Visual and Media Accessibility

A

Advanced Perceptual Contrast Algorithm

Alternative Description

Alternative Text

Audio Description

C

Closed Captions

Color Blindness

Color Contrast Ratio

Contrast (Minimum)

D

Deaf and Hard of Hearing

F

Flash threshold

H

High Contrast Mode

I

L

Long description

Luminance Contrast Ratio

N

Non-text Contrast

O

P

PEAT (Photosensitive Epilepsy Analysis Tool)

R

S

Sign Language Interpretation

Speaker Identification

Synchronized Media

T

Time-based Media Alternatives

U

W

Z