Does an accessibility overlay make a Shopify store compliant?

No. An overlay may change parts of the page for some visitors, but it does not repair inaccessible theme code, app markup, keyboard traps, or missing form labels. Compliance depends on the storefront customers actually use. A defensible program fixes the source, verifies each repair, and keeps dated evidence as themes, apps, and content change.

What overlays miss

Overlays run on top of the store. They cannot reliably rebuild a broken cart interaction, correct every app component, or guarantee that dynamic states announce properly to assistive technology. The original defect remains in the source and can still block a customer.

What to do instead

Scan the live purchase path, map each failure to its component, repair the code, and verify the result in a real browser. Keep the before and after evidence so the work is visible to developers, counsel, and insurers.