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+{
+ "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"
+ },
+ "edge":{
+ "12":"n",
+ "13":"n",
+ "14":"n",
+ "15":"n",
+ "16":"n",
+ "17":"a #4",
+ "18":"a #4"
+ },
+ "firefox":{
+ "2":"n",
+ "3":"n",
+ "3.5":"n",
+ "3.6":"n",
+ "4":"n",
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+ "56":"a #1",
+ "57":"n d #3",
+ "58":"n d #3",
+ "59":"n d #3",
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+ "62":"n d #3",
+ "63":"n d #3",
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+ },
+ "chrome":{
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+ },
+ "safari":{
+ "3.1":"n",
+ "3.2":"n",
+ "4":"n",
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+ },
+ "opera":{
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+ },
+ "ios_saf":{
+ "3.2":"n",
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+ "10.3":"n",
+ "11.0-11.2":"n d #2",
+ "11.3-11.4":"y",
+ "12":"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",
+ "67":"y"
+ },
+ "bb":{
+ "7":"n",
+ "10":"n"
+ },
+ "op_mob":{
+ "10":"n",
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+ "46":"y"
+ },
+ "and_chr":{
+ "69":"y"
+ },
+ "and_ff":{
+ "62":"n d #3"
+ },
+ "ie_mob":{
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+ "11":"n"
+ },
+ "and_uc":{
+ "11.8":"n"
+ },
+ "samsung":{
+ "4":"n",
+ "5":"y",
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+ },
+ "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.",
+ "4":"Partial support in Edge 17+ refers to support for only the HTML `<link rel>` format, not the HTTP header format."
+ },
+ "usage_perc_y":73.41,
+ "usage_perc_a":1.73,
+ "ucprefix":false,
+ "parent":"",
+ "keywords":"",
+ "ie_id":"preload",
+ "chrome_id":"5757468554559488",
+ "firefox_id":"link-rel-preload",
+ "webkit_id":"specification-preload",
+ "shown":true
+}
generated by cgit v1.2.3 (git 2.25.1) at 2026-10-10 08:26:02 +0000