DNT

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.

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 Navigator.doNotTrack property:

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

Specifications

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

See also

• Navigator.doNotTrack
• Tk header
• Do Not Track on Wikipedia
• What Does the "Track" in "Do Not Track" Mean? – EFF
• donottrack.us
• DNT browser settings help:
  • Firefox
  • Chrome