How do I test for WCAG 1.2.3 compliance?

To test Audio Description or Media Alternative: use automated tools like AltorLab's scanner for initial detection, then manually verify with keyboard navigation and screen reader testing. Check the specific failure modes described in the WCAG documentation.

🟢 Level A

WCAG 1.2.3: Audio Description or Media Alternative

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Success Criterion 1.2.3 — Level A

Quick Answer

Videos must have audio description or a text alternative describing visual information.

Why It Matters

Users who are blind cannot see visual-only content in videos without audio description.

How to Audit

Run an automated accessibility scan to detect common Audio Description or Media Alternative failures. Then manually verify with: keyboard-only navigation, a screen reader (VoiceOver on Mac, NVDA on Windows), and browser developer tools. Automated tools catch approximately 40% of Audio Description or Media Alternative issues — manual testing is essential.

How to Fix

Add audio description track or provide a detailed text transcript for all video content.

Frequently Asked Questions

What is WCAG 1.2.3 Audio Description or Media Alternative?

Videos must have audio description or a text alternative describing visual information.

Is WCAG 1.2.3 required for ADA compliance?

WCAG 2.1 Level A is the minimum baseline for ADA website compliance. Courts have upheld WCAG 2.1 AA as the standard for ADA Title III lawsuits.

How do I fix WCAG 1.2.3 violations?

Add audio description track or provide a detailed text transcript for all video content.

Disclaimer: This guide is for informational purposes only and does not constitute legal advice. Consult a qualified ADA/accessibility attorney for your specific compliance situation.

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