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Navigator: doNotTrack property

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The Navigator.doNotTrack property returns the user's Do Not Track setting, which indicates whether the user is requesting websites and advertisers to not track them.

The value of the property reflects that of the DNT HTTP header, i.e. values of "1", "0", or null.

Value

A string or null.

Examples

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

Specifications

No specification found

No specification data found for api.Navigator.doNotTrack.
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Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`doNotTrack`	23	17 Before version 17, Edge implemented `window.doNotTrack`.	9 ["In Firefox, `navigator.doNotTrack` returns `\"unspecified\"` instead of `null`.", "Before Firefox 32, `navigator.doNotTrack` would report values of `\"yes\"` and `\"no\"` rather than `\"1\"` and `\"0\"`."]	9–11 For IE11 and subsequent versions, use `window.doNotTrack`	12	5.1–7	4.4	25	9 ["In Firefox, `navigator.doNotTrack` returns `\"unspecified\"` instead of `null`.", "Before Firefox 32, `navigator.doNotTrack` would report values of `\"yes\"` and `\"no\"` rather than `\"1\"` and `\"0\"`."]	12	5–7	1.5

Value

Examples

Specifications

Browser compatibility

See also