F20: Failure of Success Criterion 1.1.1 and 4.1.2 due to not updating text alternatives when changes to non-text content occur
Corpus WCAG 2.2Applies to WCAG 2.0, 2.1, 2.2Level AAutomatable: partial
Summary: not updating text alternatives when changes to non-text content occur
Why it fails: This page reproduces the F20 failure pattern so auditors can verify detection against 1.1.1, 4.1.2.
Failure technique
Understanding
Quickref
Intentional failure — audit this region
F20
<img id="f20-img" src="/assets/icon-ok.png" alt="All clear" width="32" height="32">
<button type="button" id="f20-toggle">Toggle status</button>Expected audit result
- 1.1.1: fail — Specimen demonstrates failure of 1.1.1.
- 4.1.2: fail — Specimen demonstrates failure of 4.1.2.
Manual check: Confirm the specimen demonstrates the documented F20 failure in isolation.