Autocomplete attribute values must be valid

Checks autocomplete attributes on form controls for valid standardized values (for example: name, email, tel, street-address, postal-code, cc-number).

• Users lose browser autofill assistance
• Cognitive load increases when repeated data entry is required
• Password managers and assistive tools rely on valid tokens

Use valid WHATWG autocomplete values and token order.

Bad Example:

<input name="email" autocomplete="mail">
<input name="zip" autocomplete="postal">

Good Example:

<input name="email" autocomplete="email">
<input name="postalCode" autocomplete="postal-code">

• Non-standard custom tokens
• Misspelled tokens
• Assigning unrelated purpose tokens

• Validate markup against allowed autocomplete token list
• Manually test browser autofill suggestions
• Confirm field purpose mapping in form audits