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navigator.doNotTrack

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Returns the user's do-not-track setting. This is "1" if the user has requested not to be tracked by web sites, content, or advertising.

Syntax

dnt = navigator.doNotTrack;

The value reflects that of the do-not-track header, i.e. values of {"1", "0", "unspecified" }. Note: Prior to Gecko 32, Gecko used the values { "yes", "no", "unspecified"} (bug 887703).

Example

console.log(navigator.doNotTrack); 
// prints "1" if DNT is enabled; "0" if the user opted-in for tracking; otherwise this is "unspecified"

Specifications

Specification	Status	Comment
Tracking Preference Expression (DNT) The definition of 'Navigator.doNotTrack' in that specification.	Candidate Recommendation	Initial definition

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	23	No No Use `window.doNotTrack` instead.	9 9 Prior to Firefox 32, `navigator.doNotTrack` would report values of `yes` and `no` rather than `1` and `0`.	9 — 11 Prefixed 9 — 11 Prefixed Prefixed Requires the vendor prefix: ms For IE11 and subsequent versions, use `window.doNotTrack`	12	5.1 — 7 5.1 — 7 Safari 7.1.3+ uses `window.doNotTrack` rather than `navigator.doNotTrack`.

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	No No Use `window.doNotTrack` instead.	9 9 Prior to Firefox 32, `navigator.doNotTrack` would report values of `yes` and `no` rather than `1` and `0`.	?	?	?

navigator.doNotTrack

Syntax

Example

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also