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.

Header type Request header
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 Navigator.doNotTrack property:

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

Specifications

Browser compatibility

BCD tables only load in the browser

See also