{
"title":"Resource Hints: preload",
"description":"Using ``, 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",
"76":"y"
},
"firefox":{
"2":"n",
"3":"n",
"3.5":"n",
"3.6":"n",
"4":"n",
"5":"n",
"6":"n",
"7":"n",
"8":"n",
"9":"n",
"10":"n",
"11":"n",
"12":"n",
"13":"n",
"14":"n",
"15":"n",
"16":"n",
"17":"n",
"18":"n",
"19":"n",
"20":"n",
"21":"n",
"22":"n",
"23":"n",
"24":"n",
"25":"n",
"26":"n",
"27":"n",
"28":"n",
"29":"n",
"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":"n d #3",
"60":"n d #3",
"61":"n d #3",
"62":"n d #3",
"63":"n d #3",
"64":"n d #3",
"65":"n d #3",
"66":"n d #3",
"67":"n d #3",
"68":"n d #3",
"69":"n d #3",
"70":"n d #3",
"71":"n d #3"
},
"chrome":{
"4":"n",
"5":"n",
"6":"n",
"7":"n",
"8":"n",
"9":"n",
"10":"n",
"11":"n",
"12":"n",
"13":"n",
"14":"n",
"15":"n",
"16":"n",
"17":"n",
"18":"n",
"19":"n",
"20":"n",
"21":"n",
"22":"n",
"23":"n",
"24":"n",
"25":"n",
"26":"n",
"27":"n",
"28":"n",
"29":"n",
"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":"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",
"66":"y",
"67":"y",
"68":"y",
"69":"y",
"70":"y",
"71":"y",
"72":"y",
"73":"y",
"74":"y",
"75":"y",
"76":"y",
"77":"y",
"78":"y",
"79":"y",
"80":"y"
},
"safari":{
"3.1":"n",
"3.2":"n",
"4":"n",
"5":"n",
"5.1":"n",
"6":"n",
"6.1":"n",
"7":"n",
"7.1":"n",
"8":"n",
"9":"n",
"9.1":"n",
"10":"n",
"10.1":"n",
"11":"n d #2",
"11.1":"y",
"12":"y",
"12.1":"y",
"13":"y",
"TP":"y"
},
"opera":{
"9":"n",
"9.5-9.6":"n",
"10.0-10.1":"n",
"10.5":"n",
"10.6":"n",
"11":"n",
"11.1":"n",
"11.5":"n",
"11.6":"n",
"12":"n",
"12.1":"n",
"15":"n",
"16":"n",
"17":"n",
"18":"n",
"19":"n",
"20":"n",
"21":"n",
"22":"n",
"23":"n",
"24":"n",
"25":"n",
"26":"n",
"27":"n",
"28":"n",
"29":"n",
"30":"n",
"31":"n",
"32":"n",
"33":"n",
"34":"n",
"35":"n",
"36":"n",
"37":"y",
"38":"y",
"39":"y",
"40":"y",
"41":"y",
"42":"y",
"43":"y",
"44":"y",
"45":"y",
"46":"y",
"47":"y",
"48":"y",
"49":"y",
"50":"y",
"51":"y",
"52":"y",
"53":"y",
"54":"y",
"55":"y",
"56":"y",
"57":"y",
"58":"y",
"60":"y",
"62":"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",
"11.3-11.4":"y",
"12.0-12.1":"y",
"12.2-12.3":"y",
"13":"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",
"76":"y"
},
"bb":{
"7":"n",
"10":"n"
},
"op_mob":{
"10":"n",
"11":"n",
"11.1":"n",
"11.5":"n",
"12":"n",
"12.1":"n",
"46":"y"
},
"and_chr":{
"76":"y"
},
"and_ff":{
"68":"n d #3"
},
"ie_mob":{
"10":"n",
"11":"n"
},
"and_uc":{
"12.12":"n"
},
"samsung":{
"4":"n",
"5.0-5.4":"y",
"6.2-6.4":"y",
"7.2-7.4":"y",
"8.2":"y",
"9.2":"y"
},
"and_qq":{
"1.2":"n"
},
"baidu":{
"7.12":"n"
},
"kaios":{
"2.5":"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 `` format, not the HTTP header format."
},
"usage_perc_y":81.33,
"usage_perc_a":2,
"ucprefix":false,
"parent":"",
"keywords":"",
"ie_id":"preload",
"chrome_id":"5757468554559488",
"firefox_id":"link-rel-preload",
"webkit_id":"specification-preload",
"shown":true
}