What Is an Accessibility Overlay?
A single line of script that promises to make a site accessible is an appealing pitch. Knowing what an accessibility overlay actually does is the way to judge it. This is general information, not legal advice.
Quick Answer
An accessibility overlay is a third-party script, usually added with one line of code, that changes a web page in the visitor's browser after it loads, typically adding a toolbar and automated repairs. It does not change the site's source code. In April 2025 the FTC finalized an order requiring the overlay company accessiBe to pay $1 million and barring it from claiming its automated products can make any website WCAG-compliant without evidence.
What an overlay can and cannot change
An overlay runs on top of the page. It can add a menu of display options and attempt automatic fixes, such as guessing a label for an unlabeled control. The underlying HTML, templates and content are unchanged, so every problem in the source is still there for anything that reads the page without running that script, and every automated guess depends on the script being right.
Many WCAG criteria need human judgment: whether alt text describes the image, whether the focus order makes sense, whether an error message tells someone how to fix the mistake. Those are decisions about content and design, made in the source. That is why remediation is done in code; see how we approach it.
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What the FTC ordered
On April 22, 2025, the FTC approved a final order against accessiBe, which had claimed its “plug-in accessWidget can make any website compliant with Web Content Accessibility Guidelines (WCAG).” The order bars the company from representing that its automated products can make any website WCAG-compliant, or keep sites compliant over time, without evidence, and from presenting paid reviews or articles as independent. It requires a $1 million payment.
The FTC's complaint alleged the WCAG claims were false, misleading or unsubstantiated. The order addresses advertising claims; it does not make overlays illegal. The lesson for buyers is narrower and practical: treat any claim of automatic, guaranteed compliance with skepticism. The full story is in accessibility overlays and the FTC.
Frequently Asked Questions
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