How to fix aria valid attr on Squarespace

Steps for Squarespace

1. In your Squarespace admin, go to Website → Pages and navigate to the affected page.
2. If the invalid ARIA attribute is in a Code Block or Embed Block, click to edit that block and correct the attribute name in the HTML.
3. If it is in site-wide custom code, go to Settings → Advanced → Code Injection and search the Header or Footer injection fields for the misspelled attribute.
4. For theme-level customisation (available on Business plan and above), go to Design → Custom CSS — note that CSS cannot fix an invalid HTML attribute name; you must find the HTML source.
5. Squarespace's own native components cannot be directly edited for ARIA attributes — if the violation is inside a Squarespace-native block, report it to Squarespace Support.
6. After saving and publishing, verify with the axe DevTools browser extension.

What is aria valid attr?

ARIA (Accessible Rich Internet Applications) attributes are special HTML attributes — like `aria-label`, `aria-labelledby`, or `aria-hidden` — that tell screen readers and other assistive technologies what an element is and how it behaves. Every valid ARIA attribute has an exact, officially defined name. An "invalid ARIA attribute name" means your HTML contains an ARIA attribute that doesn't exist in the official specification — most commonly a typo like `aria-labeledby` (one 'l' instead of two) instead of `aria-labelledby`. Because the attribute name is wrong, the browser and assistive technology silently ignore it entirely, as if it were never there.

When an ARIA attribute name is misspelled, screen readers receive no accessibility information from it — the element appears unlabelled or unidentifiable to blind and low-vision shoppers. This directly harms the shopping experience for millions of people with disabilities and puts your store at legal risk under laws like the ADA (US), AODA (Canada), EAA (EU), and Equality Act (UK), all of which reference WCAG 2.x conformance. Accessibility lawsuits targeting online stores have increased sharply year over year, and a simple typo is exactly the kind of findable, actionable violation that appears in demand letters. Fixing it is quick and meaningfully improves usability for customers using assistive technology, which can also improve conversion rates in that segment.

See the complete Aria valid attr guide for every platform and the full background.