srcset.json 6.7 KB
{
  "title":"Srcset and sizes attributes",
  "description":"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":"ls",
  "links":[
    {
      "url":"https://www.webkit.org/blog/2910/improved-support-for-high-resolution-displays-with-the-srcset-image-attribute/",
      "title":"Improved support for high-resolution displays with the srcset image attribute"
    },
    {
      "url":"https://ericportis.com/posts/2014/srcset-sizes/",
      "title":"Blog post on srcset & sizes"
    },
    {
      "url":"https://developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images",
      "title":"MDN: Responsive images"
    },
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/HTML/Element/img",
      "title":"MDN: <img> element"
    }
  ],
  "bugs":[
    {
      "description":"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](https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7778808/)"
    }
  ],
  "categories":[
    "HTML5"
  ],
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      "67":"y"
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  },
  "notes":"",
  "notes_by_num":{
    "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)"
  },
  "usage_perc_y":88.65,
  "usage_perc_a":0.26,
  "ucprefix":false,
  "parent":"",
  "keywords":"srcset attribute",
  "ie_id":"imgsrcset",
  "chrome_id":"4644337115725824",
  "firefox_id":"",
  "webkit_id":"feature-srcset-w-descriptor-and-related-sizes-attribute,feature-srcset-x-descriptor",
  "shown":true
}