{"id":4475,"date":"2023-06-23T14:40:17","date_gmt":"2023-06-23T05:40:17","guid":{"rendered":"http:\/\/www.lining-moon.casa\/andplus.co.jp_230822_230809\/?p=4475"},"modified":"2026-01-08T11:12:47","modified_gmt":"2026-01-08T02:12:47","slug":"post-4475","status":"publish","type":"post","link":"https:\/\/code-plus.jp\/gp\/post-4475\/","title":{"rendered":"\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316: img\u30bf\u30b0\u306edecoding\u5c5e\u6027\u306b\u3064\u3044\u3066"},"content":{"rendered":"<p>\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u4e00\u90e8\u3068\u3057\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u304cWeb\u30da\u30fc\u30b8\u3092\u3069\u306e\u3088\u3046\u306b\u63cf\u753b\u3057\u3001\u7279\u306b\u5927\u91cf\u306e\u753b\u50cf\u307e\u305f\u306f\u30d3\u30c7\u30aa\u3092\u542b\u3080\u30da\u30fc\u30b8\u304c\u3069\u306e\u3088\u3046\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u304b\u306f\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u3001\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u3068\u30c7\u30b3\u30fc\u30c9\u306fWeb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001HTML5\u306f<code>&lt;img&gt;<\/code>\u30bf\u30b0\u306b\u65b0\u305f\u306a\u5c5e\u6027\u3067\u3042\u308b<code>decoding<\/code>\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>\u4f55\u304c\u554f\u984c\u306a\u306e\u304b<\/h3>\n<p>\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3068\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u308b\u753b\u50cf\u306e\u30c7\u30b3\u30fc\u30c9\u30012\u3064\u306e\u4e3b\u8981\u306a\u5de5\u7a0b\u306b\u5206\u304b\u308c\u307e\u3059\u3002\u901a\u5e38\u3001\u3053\u308c\u3089\u306e\u5de5\u7a0b\u306f\u540c\u671f\u7684\u306b\u884c\u308f\u308c\u3001\u30c7\u30b3\u30fc\u30c9\u304c\u5b8c\u4e86\u3059\u308b\u307e\u3067\u30da\u30fc\u30b8\u306e\u63cf\u753b\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u7279\u306b\u5927\u304d\u306a\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u308b\u3068\u304d\u3084\u3001\u591a\u6570\u306e\u753b\u50cf\u3092\u542b\u3080\u30da\u30fc\u30b8\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u308b\u3068\u304d\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u8457\u3057\u304f\u640d\u306a\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>\u89e3\u6c7a\u7b56: decoding\u5c5e\u6027<\/h3>\n<p>\u3053\u308c\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3001<code>&lt;img&gt;<\/code>\u30bf\u30b0\u306b\u306f<code>decoding<\/code>\u5c5e\u6027\u304c\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u5c5e\u6027\u306f3\u3064\u306e\u5024\u3092\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n<p>&nbsp;<\/p>\n<ul>\n\t<li><strong>\"sync\"<\/strong>: \u753b\u50cf\u306f\u540c\u671f\u7684\u306b\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u6319\u52d5\u3067\u3059\u3002<\/li>\n\t<li><strong>\"async\"<\/strong>: \u753b\u50cf\u306f\u975e\u540c\u671f\u7684\u306b\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u753b\u50cf\u306e\u30c7\u30b3\u30fc\u30c9\u304c\u30da\u30fc\u30b8\u306e\u63cf\u753b\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n\t<li><strong>\"auto\"<\/strong>: \u30d6\u30e9\u30a6\u30b6\u306f\u753b\u50cf\u306e\u30c7\u30b3\u30fc\u30c9\u65b9\u6cd5\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u3053\u308c\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5024\u3067\u3059\u3002<\/li>\n\t<li><\/li>\n<\/ul>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u30da\u30fc\u30b8\u306e\u63cf\u753b\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u753b\u50cf\u306e\u30c7\u30b3\u30fc\u30c9\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u306f\u3001<code>&lt;img&gt;<\/code>\u30bf\u30b0\u306b<code>decoding=\"async\"<\/code>\u5c5e\u6027\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3059\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<pre class=\"language-html\"><code>\n&lt;img src=\"image.jpg\" decoding=\"async\" alt=\"Description\"&gt;\n<\/code><\/pre>\n<h3>\u6ce8\u610f\u70b9<\/h3>\n<p>\u3053\u306e\u5c5e\u6027\u304c\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30d6\u30e9\u30a6\u30b6\u304c\u307e\u3060\u5b58\u5728\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u5c5e\u6027\u306f<code>&lt;img&gt;<\/code>\u30bf\u30b0\u306b\u5bfe\u3057\u3066\u306e\u307f\u6709\u52b9\u3067\u3001\u4ed6\u306e\u30e1\u30c7\u30a3\u30a2\u8981\u7d20\uff08<code>&lt;video&gt;<\/code>\u3084<code>&lt;iframe&gt;<\/code>\uff09\u3084\u3001<code>&lt;svg&gt;<\/code>\u3084<code>&lt;picture&gt;<\/code>\u306e\u3088\u3046\u306a\u4ed6\u306e\u753b\u50cf\u95a2\u9023\u306e\u30bf\u30b0\u306b\u5bfe\u3057\u3066\u306f\u76f4\u63a5\u52b9\u679c\u3092\u767a\u63ee\u3057\u307e\u305b\u3093<\/p>","protected":false},"excerpt":{"rendered":"\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u4e00\u90e8\u3068\u3057\u3066\u3001\u30d6\u30e9\u30a6\u30b6\u304cWeb\u30da\u30fc\u30b8\u3092\u3069\u306e\u3088\u3046\u306b\u63cf\u753b\u3057\u3001\u7279\u306b\u5927\u91cf\u306e\u753b\u50cf\u307e\u305f\u306f\u30d3\u30c7\u30aa\u3092\u542b\u3080\u30da\u30fc\u30b8\u304c\u3069\u306e\u3088\u3046\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u304b\u306f\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u3001\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u3068\u30c7\u30b3\u30fc\u30c9\u306fWeb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u306a\u5f71\u97ff[...]","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","footnotes":"","vk-ltc-link":"","vk-ltc-target":""},"categories":[11],"tags":[],"group":[],"pg":[],"class_list":["post-4475","post","type-post","status-publish","format-standard","category-html-css"],"acf":[],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts\/4475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/comments?post=4475"}],"version-history":[{"count":0,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/posts\/4475\/revisions"}],"wp:attachment":[{"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/media?parent=4475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/categories?post=4475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/tags?post=4475"},{"taxonomy":"group","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/group?post=4475"},{"taxonomy":"pg","embeddable":true,"href":"https:\/\/code-plus.jp\/gp\/wp-json\/wp\/v2\/pg?post=4475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}