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Do Not Track API

Allows the browser's Do Not Track setting to be queried via navigator.doNotTrack.

Spec https://www.w3.org/TR/tracking-dnt/
Status W3C Candidate Recommendation
IE Edge Firefox Chrome Safari Opera
      73    
    65 72    
    64 71 TP  
11 (2) 18 63 70 12 56
10 (1,*) 17 62 69 11.1 55
9 (1,*) 16 (2) 61 68 11 54
8 15 (2) 60 67 10.1 53
Show all
7 14 (2) 59 66 10 52
6 13 (2) 58 65 9.1 51
5.5 12 (2) 57 64 9 (4) 50
    56 63 8 (4) 49
    55 62 7.1 (4) 48
    54 61 7 (4) 47
    53 60 6.1 (4) 46
    52 59 6 45
    51 58 5.1 44
    50 57 5 43
    49 56 4 42
    48 55 3.2 41
    47 54 3.1 40
    46 53   39
    45 52   38
    44 51   37
    43 50   36
    42 49   35
    41 48   34
    40 47   33
    39 46   32
    38 45   31
    37 44   30
    36 43   29
    35 42   28
    34 41   27
    33 40   26
    32 39   25
    31 (3) 38   24
    30 (3) 37   23
    29 (3) 36   22
    28 (3) 35   21
    27 (3) 34   20
    26 (3) 33   19
    25 (3) 32   18
    24 (3) 31   17
    23 (3) 30   16
    22 (3) 29   15
    21 (3) 28   12.1
    20 (3) 27   12
    19 (3) 26   11.6
    18 (3) 25   11.5
    17 (3) 24   11.1
    16 (3) 23   11
    15 (3) 22   10.6
    14 (3) 21   10.5
    13 (3) 20   10.0-10.1
    12 (3) 19   9.5-9.6
    11 (3) 18   9
    10 (3) 17    
    9 (3) 16    
    8 15    
    7 14    
    6 13    
    5 12    
    4 11    
    3.6 10    
    3.5 9    
    3 8    
    2 7    
      6    
      5    
      4    
iOS Safari Opera Mini Android Browser Blackberry Browser Opera Mobile Android Chrome Android Firefox IE Mobile Android UC Browser Samsung Internet QQ Browser Baidu Browser
12 all 67 10 (4) 46 70 63 11 (2) 11.8 7.2 1.2 7.12
11.3-11.4   4.4.3-4.4.4 7 12.1     10 (1,*)   6.2    
11.0-11.2   4.4   12         5    
10.3   4.2-4.3   11.5         4    
Show all
10.0-10.2   4.1   11.1              
9.3   4   11              
9.0-9.2   3   10              
8.1-8.4 (4)   2.3                  
8 (4)   2.2                  
7.0-7.1 (4)   2.1                  
6.0-6.1                      
5.0-5.1                      
4.2-4.3                      
4.0-4.1                      
3.2                      

Notes

Partial support refers to the doNotTrack field being misnamed, or being attached to an object other than navigator (e.g. window).

  1. IE 9 and 10 are vendor-prefixed as navigator.msDoNotTrack

  2. IE 11 and Edge 16- use window.doNotTrack instead of navigator.doNotTrack.

  3. Browsers based on Gecko versions prior to 32 used 'yes' and 'no' rather than '1' and '0'.

  4. Between versions 6.1.1 and 9.1.3, Safari supported an ultimately-rejected amendment to the spec, using window.doNotTrack rather than navigator.doNotTrack.

* Partial support with prefix.

Bugs

  • For Gecko versions < 32, some browsers incorrectly report 'yes' for both "Tell sites I don't want to be tracked" _and_ "Tell sites I _do_ want to be tracked.".

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=do-not-track