index.md

---

title: DNT
slug: Web/HTTP/Headers/DNT
status:
  - deprecated
browser-compat: http.headers.DNT

---

{{HTTPSidebar}}{{Deprecated_header}}

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

Header type	{{Glossary("Request header")}}
{{Glossary("Forbidden header name")}}	yes

Syntax

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:

navigator.doNotTrack; // "0" or "1"

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{domxref("Navigator.doNotTrack")}}

• {{HTTPHeader("Tk")}} header

• Do Not Track on Wikipedia

• What Does the "Track" in "Do Not Track" Mean? – EFF

• DNT on Electronic Frontier Foundation

• DNT browser settings help:

  • Firefox

  • Chrome