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Resource Hints: preload

Using <link rel="preload">, browsers can be informed to prefetch resources without having to execute them, allowing fine-grained control over when and how resources are loaded.

Spec https://w3c.github.io/preload/
Status W3C Candidate Recommendation
IE Edge Firefox Chrome Safari Opera
      73    
    65 (3) 72    
    64 (3) 71 TP  
11 18 (4) 63 (3) 70 12 56
10 17 (4) 62 (3) 69 11.1 55
9 16 61 (3) 68 11 (2) 54
8 15 60 (3) 67 10.1 53
Show all
7 14 59 (3) 66 10 52
6 13 58 (3) 65 9.1 51
5.5 12 57 (3) 64 9 50
    56 (1) 63 8 49
    55 62 7.1 48
    54 61 7 47
    53 60 6.1 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 38   24
    30 37   23
    29 36   22
    28 35   21
    27 34   20
    26 33   19
    25 32   18
    24 31   17
    23 30   16
    22 29   15
    21 28   12.1
    20 27   12
    19 26   11.6
    18 25   11.5
    17 24   11.1
    16 23   11
    15 22   10.6
    14 21   10.5
    13 20   10.0-10.1
    12 19   9.5-9.6
    11 18   9
    10 17    
    9 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 46 70 63 (3) 11 11.8 7.2 1.2 7.12
11.3-11.4   4.4.3-4.4.4 7 12.1     10   6.2    
11.0-11.2 (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   2.3                  
8   2.2                  
7.0-7.1   2.1                  
6.0-6.1                      
5.0-5.1                      
4.2-4.3                      
4.0-4.1                      
3.2                      

Notes

  1. Only cachable resources can be preloaded. This includes the following as values: script, style, image, video, audio, track, fetch, and font (note font/collection is not supported).

  2. Can be enabled via the "Experimental Features" developer menu

  3. Disabled by default behind the network.preload flag.

  4. Partial support in Edge 17+ refers to support for only the HTML <link rel> format, not the HTTP header format.

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
http://caniuse.com/#feat=link-rel-preload