How to fix autocomplete valid on Squarespace

Steps for Squarespace

1. Squarespace does not provide direct HTML editing of built-in form blocks or checkout fields.
2. For built-in Form Blocks (contact, newsletter), Squarespace injects its own markup. You can inject additional attributes via Settings → Advanced → Code Injection (available on Business plan and above) using a JavaScript snippet that sets `autocomplete` on matching inputs after DOM load (see code snippet).
3. For Squarespace Commerce checkout, Squarespace controls the checkout page HTML — contact Squarespace Support to report missing autocomplete attributes on checkout fields.
4. For any custom HTML blocks containing `<form>` markup (Insert Block → Code), you have full control — add the correct `autocomplete` attribute directly to each `<input>` in your HTML block.
5. After injecting JavaScript, publish and verify with the axe browser extension that the violation is resolved.

What is autocomplete valid?

The HTML `autocomplete` attribute tells browsers (and assistive technologies) what kind of data a form field expects — for example, a person's name, email address, shipping street address, or credit card number. WCAG Success Criterion 1.3.5 ("Identify Input Purpose") requires that any field collecting personal information carry a correct, recognised `autocomplete` value from a defined list. If the value is missing, misspelled, or used on the wrong type of field (e.g. `autocomplete="email"` on a password input), browsers and screen readers cannot reliably identify its purpose, and the autocomplete feature breaks.

For users with cognitive disabilities, motor impairments, or low vision, browser autofill is not a convenience — it is often the only practical way to complete a checkout form. An invalid or missing `autocomplete` value means autofill silently fails, forcing customers to type every field manually and dramatically increasing checkout abandonment. WCAG 1.3.5 is a Level AA requirement, which is the legal conformance target in most accessibility laws worldwide (ADA, EAA, AODA, EN 301 549); non-compliance creates real legal exposure. Fixing it also improves Google's Page Experience signals and can lift organic conversion rates, since a frictionless checkout is one of the clearest levers on revenue.

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