technology
Accessibility Overlay
An accessibility overlay is a third-party JavaScript widget injected into a website that claims to detect and remediate accessibility issues at run-time — by manipulating the DOM, presenting an accessibility-preferences panel, or both; the practice has been the subject of an organised opposition (the Overlay Fact Sheet, signed by 900+ accessibility professionals) and has not insulated user sites from ADA lawsuits.
About Accessibility Overlay
Overlays do not modify source code. WCAG conformance is graded at source level. US courts (Murphy v. Eyebobs and others) have ruled that overlay presence does not preclude ADA liability.
Citations
- Overlay Fact Sheet — Karl Groves et al.
Where Accessibility Overlay appears in a AccessivePath audit
Our AI auditors test concepts like Accessibility Overlay as part of the WCAG 2.2 Level AA audit cycle — both via automated rule scanning and through screen-reader simulation and human pair review.
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