{
  "title":"Resource Hints: preload",
  "description":"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":"cr",
  "links":[
    {
      "url":"https://www.smashingmagazine.com/2016/02/preload-what-is-it-good-for/",
      "title":"Preload: What Is It Good For?"
    },
    {
      "url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1222633",
      "title":"Firefox support bug"
    },
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/HTML/Preloading_content",
      "title":"MDN Web Docs - Preloading content with rel=\"preload\""
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "DOM"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n"
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    "edge":{
      "12":"n",
      "13":"n",
      "14":"n",
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      "16":"n",
      "17":"y"
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    "firefox":{
      "2":"n",
      "3":"n",
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      "4":"n",
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      "28":"n",
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      "30":"n",
      "31":"n",
      "32":"n",
      "33":"n",
      "34":"n",
      "35":"n",
      "36":"n",
      "37":"n",
      "38":"n",
      "39":"n",
      "40":"n",
      "41":"n",
      "42":"n",
      "43":"n",
      "44":"n",
      "45":"n",
      "46":"n",
      "47":"n",
      "48":"n",
      "49":"n",
      "50":"n",
      "51":"n",
      "52":"n",
      "53":"n",
      "54":"n",
      "55":"n",
      "56":"a #1",
      "57":"n d #3",
      "58":"n d #3",
      "59":"y",
      "60":"y",
      "61":"y"
    },
    "chrome":{
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
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      "47":"n",
      "48":"n",
      "49":"n",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
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      "67":"y"
    },
    "safari":{
      "3.1":"n",
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      "4":"n",
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      "8":"n",
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      "9.1":"n",
      "10":"n",
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      "11":"n d #2",
      "11.1":"y",
      "TP":"y"
    },
    "opera":{
      "9":"n",
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      "10.0-10.1":"n",
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      "12":"n",
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      "36":"n",
      "37":"y",
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      "43":"y",
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      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y"
    },
    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"n",
      "6.0-6.1":"n",
      "7.0-7.1":"n",
      "8":"n",
      "8.1-8.4":"n",
      "9.0-9.2":"n",
      "9.3":"n",
      "10.0-10.2":"n",
      "10.3":"n",
      "11.0-11.2":"n d #2",
      "11.3":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"n",
      "4.4.3-4.4.4":"n",
      "62":"y"
    },
    "bb":{
      "7":"n",
      "10":"n"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"n",
      "12.1":"n",
      "37":"y"
    },
    "and_chr":{
      "64":"y"
    },
    "and_ff":{
      "57":"a #1"
    },
    "ie_mob":{
      "10":"n",
      "11":"n"
    },
    "and_uc":{
      "11.8":"n"
    },
    "samsung":{
      "4":"n",
      "5":"y",
      "6.2":"y"
    },
    "and_qq":{
      "1.2":"n"
    },
    "baidu":{
      "7.12":"n"
    }
  },
  "notes":"",
  "notes_by_num":{
    "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."
  },
  "usage_perc_y":58.57,
  "usage_perc_a":0.61,
  "ucprefix":false,
  "parent":"",
  "keywords":"",
  "ie_id":"preload",
  "chrome_id":"5757468554559488",
  "firefox_id":"link-rel-preload",
  "webkit_id":"specification-preload",
  "shown":true
}