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HTML family-name Autocomplete Token: Reference and Examples

Learn how to use autocomplete="family-name" in HTML forms with readable code, privacy notes and beginner tips.

1 views Published Oct 19, 2026 Updated Oct 19, 2026 Admin

Have you ever started typing into a form and had your browser suggest a saved value? HTML can help the browser decide which value belongs in which field. The autocomplete token family-name is used for family or last name.

What family-name tells the browser


Family or last name.

This is a hint, not an instruction to fill a value automatically. Browsers and password managers consider settings, saved data, permissions and other signals before offering suggestions.

Example form field


<form action="/example" method="post">
    <label for="detail-field">Last name</label>
    <input id="detail-field" name="detail" type="text" autocomplete="family-name">
    <button type="submit">Continue</button>
</form>

Understanding the example


The autocomplete="family-name" attribute labels this field for autofill. Its visible <label> still tells people what to type, and its name attribute determines the key sent when a form is submitted.

Naming conventions vary around the world; avoid assumptions.

A correct token improves convenience but does not prove that the value is accurate. Keep accessible labels and appropriate server-side validation.

Try it yourself


Save the example as an HTML file, and test the field with browser autofill enabled. Inspect the autocomplete value and compare it with the field label. Browser behavior depends on available saved information, so a missing suggestion is not necessarily an HTML mistake.

Common Beginner Mistakes


  • Naming conventions vary around the world; avoid assumptions.
  • Leaving out the visible label because the browser might autofill the field.
  • Treating autofill suggestions as verified or safe data.

Key Takeaways


  • family-name describes family or last name.
  • Naming conventions vary around the world; avoid assumptions.
  • Autocomplete helps users; it does not replace labeling, accessibility or validation.
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