How to prevent the browser from displaying its own autocompletion box?

In order to disable the legacy auto-completion feature displayed when a user start typing in an input field, you need to add autocomplete="off" on the input. We also recommend that you add autocorrect="off", autocapitalize="none" and spellcheck="false" on mobile devices.

Reference:

• How to disable autocomplete on MDN
• Autocomplete attribute on MDN
• Autocorrect attribute on MDN
• Autocapitalize attribute on MDN
• Spellcheck attribute on MDN