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Srcset and sizes attributes

The srcset and sizes attributes on img (or source) elements allow authors to define various image resources and "hints" that assist a user agent to determine the most appropriate image source to display (e.g. high-resolution displays, small monitors, etc).

Spec https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-srcset
Status WHATWG Living Standard
IE Edge Firefox Chrome Safari Opera
      73    
    65 72    
    64 71 TP  
11 18 63 70 12 56
10 17 62 69 11.1 55
9 16 61 68 11 54
8 15 (3) 60 67 10.1 53
Show all
7 14 (3) 59 66 10 52
6 13 (3) 58 65 9.1 51
5.5 12 (2) 57 64 9 50
    56 63 8 (2) 49
    55 62 7.1 (2) 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 (1) 44   30
    36 (1) 43   29
    35 (1) 42   28
    34 (1) 41   27
    33 (1) 40   26
    32 (1) 39   25
    31 38   24 (2)
    30 37 (2)   23 (2)
    29 36 (2)   22 (2)
    28 35 (2)   21 (2)
    27 34 (2)   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 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   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)   2.3                  
8 (2)   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. Can be enabled in Firefox by setting the about:config preference dom.image.srcset.enabled to true

  2. Supports the subset of the syntax for resolution switching (using the x descriptor), but not the full syntax that can be used with sizes (using the w descriptor).

  3. Intermittently displays distorted images due to bug present (see known issues)

Bugs

  • Edge versions 13, 14 and 15 intermittently display distorted images as soon as they encounter a srcset attribute, seemingly dependent on caching and network timing. see bug

Resources

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