Accessibility overlays vs fixing your site: what they can and can’t do
If you run an online store, you’ve probably seen the pitch: add one line of JavaScript, and an AI-powered widget will make your site accessible and compliant. These products are usually called accessibility overlays. They are popular with small businesses because they’re quick and cheap compared with changing a theme.
This guide tries to be fair about what they do well, where they fall short, and what US regulators have said. Disclosure: we sell automated scan reports, not overlays, and we don’t fix sites for you. Automated tools of every kind, including ours, find only a portion of accessibility issues.
What an overlay is
An overlay is a third-party script that runs on top of your pages. Most combine two things:
- A toolbar (usually a floating accessibility icon) that lets visitors enlarge text, change contrast, highlight links, pause animations, and similar.
- Automatic “remediation”: after your page loads, the script tries to detect problems and patch the page in the visitor’s browser, for example by adding labels, ARIA attributes or machine-generated alt text.
The key point is that your theme, product content and apps don’t change. The script edits a copy of the page in each visitor’s browser, every time it loads.
What overlays can do
- Give some visitors display options in one place. For a person who doesn’t know about browser zoom or system contrast settings, a toolbar can help.
- Patch some simple, predictable problems, such as a missing page language, where the correct fix can be inferred from the code.
- Be deployed quickly, without touching the theme.
What overlays can’t reliably do
- Know what your images mean. Machine-generated alt text can describe “a woman in a blue dress”, but not that it’s the navy linen version with pockets. See writing product alt text.
- Repair broken interactive components. A variant picker, cart drawer or mega-menu built without keyboard support usually needs its code changed. Patching behavior from the outside is fragile and can break when the theme or app updates.
- Fix content and design decisions: confusing error messages, unlabeled icons whose purpose isn’t obvious, video without captions, instructions that rely on color.
- Replace the user’s own tools. Many disabled shoppers already use screen readers, magnifiers, voice control or custom stylesheets configured for their needs. A site-specific toolbar doesn’t add much for them, and some users report that overlays interfere with their assistive technology.
- Guarantee compliance. No automated product can make every website conform to WCAG, as the FTC case below shows.
What the US government has said
Department of Justice
The DOJ’s Guidance on Web Accessibility and the ADA (March 2022) addresses overlays directly: “Automated accessibility checkers and overlays that identify or fix problems with your website can be helpful tools, but like other automated tools such as spelling or grammar checkers, they need to be used carefully. A ‘clean’ report does not necessarily mean everything is accessible.” It recommends pairing automated tools with a manual check.
Federal Trade Commission: the accessiBe order (2025)
In January 2025 the FTC announced a complaint and proposed order against accessiBe, maker of the accessWidget overlay. The FTC alleged that the company misrepresented its AI-powered tool’s ability to make any website compliant with WCAG, and that it formatted third-party articles and reviews to look like independent opinions without disclosing its connections to the reviewers. In April 2025 the Commission approved the final order, which requires accessiBe to pay $1 million and bars it from claiming that its automated products can make any website WCAG-compliant, or keep it compliant over time, unless it has evidence to support the claim.
Two things are worth being precise about. The case was about marketing claims; it doesn’t ban overlays or say using one is unlawful. And it applies to one company. But it is a clear signal about the core promise many overlays make: that a script alone can make a site compliant.
Overlay vs fixing: side by side
| Aspect | Overlay | Fixing your site |
|---|---|---|
| What changes | A script edits the page in each visitor’s browser | Your theme, content and apps change at the source |
| Alt text quality | Machine-generated guesses | Written by someone who knows the product |
| Keyboard and focus problems | Sometimes patched, fragile | Fixed in the component |
| Ongoing cost | Usually a subscription | Mostly one-time effort, plus care when adding apps |
| Works if the script fails to load | No | Yes |
| Guarantees compliance | No | No, but removes the actual barriers |
A practical path for a small store
- Find the barriers. Run an automated scan (with any overlay turned off, so you see your real site), then do the manual checks in what an automated scan can and can’t find.
- Fix what you control: alt text, colors, headings, link text, form labels. Our Shopify checklist covers 20 fixes you can make without code, and the contrast guide shows how to fix colors.
- Push vendors to fix the rest. If a theme or app isn’t keyboard accessible, report it to the developer, or replace it.
- Then decide about widgets. If you still want a display-options toolbar, test that it doesn’t get in the way of keyboard and screen reader users, and don’t describe it on your site as making you “compliant”.
Frequently asked questions
Will an accessibility overlay protect my store from ADA lawsuits?
No tool can guarantee that. The Department of Justice says automated checkers and overlays need to be used carefully, and in 2025 the FTC ordered one overlay vendor to stop claiming its product could make any website WCAG compliant without evidence. Fixing the underlying barriers is the more reliable path, and for legal questions you should talk to a lawyer.
Are overlays illegal or banned?
No. The FTC action against accessiBe was about deceptive marketing claims, not a ban on overlay products. Businesses can use them; the question is whether they actually remove the barriers on your site.
Should I remove an overlay I already have?
Not necessarily right away. First test your site with the overlay turned off and fix the barriers you find. Then decide whether the widget still adds anything for your customers, and test that it does not interfere with keyboard or screen reader use.
Sources
- US Department of Justice, Guidance on Web Accessibility and the ADA (ada.gov, March 18, 2022).
- Federal Trade Commission, FTC Order Requires Online Marketer to Pay $1 Million for Deceptive Claims that its AI Product Could Make Websites Compliant with Accessibility Guidelines (January 3, 2025) and FTC Approves Final Order Requiring accessiBe to Pay $1 Million (April 2025).
- W3C, WCAG 2.2 and Selecting Web Accessibility Evaluation Tools.