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DNT header

files/en-us/web/http/reference/headers/dnt/index.md

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{{Deprecated_header}}{{non-standard_header}}

[!NOTE] The DNT (Do Not Track) specification has been discontinued. See {{domxref("Navigator.doNotTrack")}} for more information.

The HTTP DNT (Do Not Track) {{Glossary("request header")}} indicates the user's tracking preference. It lets users indicate whether they would prefer privacy rather than personalized content.

DNT is deprecated in favor of Global Privacy Control, which is communicated to servers using the {{HTTPHeader("Sec-GPC")}} header, and accessible to clients from {{domxref("navigator.globalPrivacyControl")}}.

<table class="properties"> <tbody> <tr> <th scope="row">Header type</th> <td>{{Glossary("Request header")}}</td> </tr> <tr> <th scope="row">{{Glossary("Forbidden request header")}}</th> <td>Yes</td> </tr> </tbody> </table>

Syntax

http
DNT: 0
DNT: 1
DNT: null

Directives

  • 0
    • : The user prefers to allow tracking on the target site.
  • 1
    • : The user prefers not to be tracked on the target site.
  • null
    • : The user has not specified a preference about tracking.

Examples

Reading Do Not Track status from JavaScript

The user's DNT preference can also be read from JavaScript using the {{domxref("Navigator.doNotTrack")}} property:

js
navigator.doNotTrack; // "0", "1" or null

Specifications

Part of the discontinued Tracking Preference Expression (DNT) specification.

Browser compatibility

{{Compat}}

See also