Visual Content Accessible Alternative Check

Description

The “Visual Content Accessible Alternative Check” evaluates whether <video></mark> elements that present visual-only or visually significant content (like action, facial expressions, or charts) include an accessible alternative.

Example outcome

I noticed that there is 1 <video></mark> element with visual content that must have an accessible alternative.

Impact

• Visual Impairments: Visually impaired individuals may miss key visual content such as actions, gestures, charts, etc.
• Cognitive Disabilities: Users with cognitive disabilities may rely on clear audio description to process visual sequences.

Fixes

To address missing visual content accessible alternatives:

1. Locate the inappropriate <video></mark> element.
2. Provide either an audio description or a text transcript.

Resources

• WCAG 2.2: Understanding Success Criteria 1.2.3
• WCAG 2.2 Techniques: Technique G8: Providing a movie with extended audio descriptions
• WebAIM: Captions, Transcripts, and Audio Descriptions