Use autocomplete for common information

When users have already provided information to your site, take the extra step to prefill those fields automatically. There's no justification for asking users to reenter data you already have. This approach respects users' time and physical capabilities while reducing interaction costs and abandonment rates.

Implement autocomplete for standard information that people enter frequently across websites: names, email addresses, phone numbers, postal addresses, and payment details. Modern browsers support the HTML autocomplete attribute, which lets users choose from previously entered values stored securely in their browser. This simple addition dramatically increases form completion rates.