WCAG 1.1.1
Non-text Content
- Level A
- WCAG 2.0
- Principle 1: Perceivable
- EN 301 549: 9.1.1.1
In short
All non-text content has a text alternative serving an equivalent purpose.
How Percelia tests it
Percelia detects some cases automatically with rules; the rest needs AI or human judgment. Anything ambiguous goes to human review.
This criterion is judgment-bound and is always put to a human reviewer at Percelia, even at high confidence.
Official source
W3C Understanding document (w3.org)
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