{"id":4038,"date":"2021-03-08T13:24:59","date_gmt":"2021-03-08T04:24:59","guid":{"rendered":"https:\/\/mihune-web.com\/blog\/?p=4038"},"modified":"2023-10-05T13:36:17","modified_gmt":"2023-10-05T04:36:17","slug":"howtouse_webp","status":"publish","type":"post","link":"https:\/\/mihune-web.com\/blog\/howtouse_webp\/","title":{"rendered":"WebP\u753b\u50cf\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"\n<p><a href=\"https:\/\/mihune-web.com\/raku-uru-cart\/\" title=\"\u3089\u304f\u3046\u308b\u30ab\u30fc\u30c8\u306e\u30cd\u30c3\u30c8\u30b7\u30e7\u30c3\u30d7\u5236\u4f5c\">\u3089\u304f\u3046\u308b\u30ab\u30fc\u30c8<\/a>\u306e\u5236\u4f5c\u3092\u3057\u3066\u3044\u308b\u3068\u3001<strong>\u3069\u3046\u3084\u3089webP\uff08\u30a6\u30a7\u30c3\u30d4\u30fc\uff09\u753b\u50cf\u3082\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u308b\u3089\u3057\u3044<\/strong>\uff08\uff11\u30d5\u30a1\u30a4\u30eb10MB\u4ee5\u5185\u306a\u3089\u591a\u5206\u4f55\u3067\u3082\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3067\u304d\u308b\uff09\u3068\u6c17\u4ed8\u3044\u305f\u306e\u3067\u3001\u5546\u54c1\u753b\u50cf\u4ee5\u5916\u306f\u3054\u308a\u3054\u308awebP\u5bfe\u5fdc\u306b\u66f8\u304d\u76f4\u3057\u3066\u3044\u308b\u3053\u306e\u9803\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ed6\u306eEC\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u307e\u3060\u5229\u7528\u3067\u304d\u306a\u3044\u3053\u3068\u306e\u591a\u3044webP\u3067\u3059\u304c\u3001\u5546\u54c1\u753b\u50cf\u3092\u81ea\u52d5\u3067webP\u5f62\u5f0f\u306b\u5909\u63db\u8868\u793a\u3057\u3066\u3044\u308bEC\u30e2\u30fc\u30eb\u3082\u3042\u308a\u307e\u3059\u3057\u3001\u4eca\u5f8c\u306f\u666e\u53ca\u3057\u3066\u3044\u304f\u306e\u3060\u308d\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3054\u81ea\u8eab\u3067\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u308b\u65b9\u5411\u3051\u306b\u3001HTML\u30fbCSS\u3067\u3069\u3046webP\u3092\u4f7f\u3046\u306e\u304b\u8aac\u660e\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u3082\u304f\u3058<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69f531d3aee08\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69f531d3aee08\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mihune-web.com\/blog\/howtouse_webp\/#webP%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E3%83%BB%E4%B8%BB%E3%81%AA%E7%89%B9%E5%BE%B4\" >webP\u306b\u3064\u3044\u3066\u30fb\u4e3b\u306a\u7279\u5fb4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mihune-web.com\/blog\/howtouse_webp\/#HTML%E3%81%A7%E3%81%AE%E6%8C%87%E5%AE%9A%EF%BC%88img%E3%82%BF%E3%82%B0%EF%BC%89\" >HTML\u3067\u306e\u6307\u5b9a\uff08img\u30bf\u30b0\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mihune-web.com\/blog\/howtouse_webp\/#CSS%E3%81%A7%E3%81%AE%E6%8C%87%E5%AE%9A\" >CSS\u3067\u306e\u6307\u5b9a<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"webP%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6%E3%83%BB%E4%B8%BB%E3%81%AA%E7%89%B9%E5%BE%B4\"><\/span>webP\u306b\u3064\u3044\u3066\u30fb\u4e3b\u306a\u7279\u5fb4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>webP\u306b\u3064\u3044\u3066\u8981\u70b9\u3092\u307e\u3068\u3081\u308b\u3068<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Google\u304c\u958b\u767a<\/li><li>jpg\u30fbpng\u30fbgif\u5168\u3066\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b<\/li><li>\u8efd\u3044\uff08\u540c\u3058px\u30b5\u30a4\u30ba\u306ejpg\u3068\u6bd4\u3079\u3066\u300110\u301c70%\u306e\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\uff0a\u5727\u7e2e\u7387\u306b\u3088\u308b\uff09<\/li><li>\u304d\u308c\u3044<\/li><\/ul>\n\n\n\n<p>\u3067\u3059\u3002<\/p>\n\n\n\n<p>webP\u304c\u767b\u5834\u3057\u30667\u30018\u5e74\u7d4c\u3063\u305f\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u6628\u5e74safari\u304cwebP\u5bfe\u5fdc\u3092\u3057\u305f\u3053\u3068\u3067\u3001\u3088\u3046\u3084\u304f\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u5168\u3066\u304cwebP\u5bfe\u5fdc\u3057\u307e\u3057\u305f\u3002\uff08IE\u306e\u305e\u304f\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"708\" height=\"279\" src=\"https:\/\/images.mihune-web.com\/mihune\/2021\/03\/CanIuse_webpformat.png\" alt=\"Webp\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e\u30d6\u30e9\u30a6\u30b6\u5225\u5bfe\u5fdc\u8868\" class=\"wp-image-4039\" srcset=\"https:\/\/images.mihune-web.com\/mihune\/2021\/03\/CanIuse_webpformat.png 708w, https:\/\/images.mihune-web.com\/mihune\/2021\/03\/CanIuse_webpformat-320x126.png 320w\" sizes=\"auto, (max-width: 708px) 100vw, 708px\" \/><\/figure>\n\n\n\n<p>\u30d6\u30e9\u30a6\u30b6\u304c\u5bfe\u5fdc\u3057\u3066\u3082\u30e6\u30fc\u30b6\u30fc\u5168\u54e1\u304c\u6700\u65b0\u7248\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u307e\u3067\u306b\u306f\u30bf\u30a4\u30df\u30e9\u30b0\u304c\u3042\u308b &amp; IE\u306b\u3082\u6c17\u3092\u4f7f\u308f\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u3067\u3001HTML\/CSS\u3067\u306e\u8a18\u8ff0\u306fwebP\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306b\u3082\u914d\u616e\u305b\u306d\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"HTML%E3%81%A7%E3%81%AE%E6%8C%87%E5%AE%9A%EF%BC%88img%E3%82%BF%E3%82%B0%EF%BC%89\"><\/span>HTML\u3067\u306e\u6307\u5b9a\uff08img\u30bf\u30b0\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>HTML\u3067\u4f7f\u3046\u3068\u304d\u306f\u7c21\u5358\u3067\u3001picture\u30bf\u30b0\u3092\u4f7f\u7528\u3057\u3066webp\u304b\u3089\u9806\u306b\u6307\u5b9a\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u3082\u9069\u5f53\u306b\u4ea4\u3048\u308b\u3068\u3001<\/p>\n\n\n\n<pre class=\"wp-block-code html\"><code>&lt;picture&gt;\n\t&lt;source media=\"(max-width:480px)\" srcset=\"image-400.webp\" type=\"image\/webp\"&gt;\n\t&lt;source srcset=\"image.webp\" type=\"image\/webp\"&gt;\n\t&lt;source media=\"(max-width:480px)\" srcset=\"image-400.png\" type=\"image\/png\"&gt;\n\t&lt;img src=\"image.png\" width=\"1000\" height=\"1000\" alt=\"\u5343\" \/&gt;\n&lt;\/picture&gt;<\/code><\/pre>\n\n\n\n<p>\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u3002\uff08type=image\/png \u306f\u7121\u304f\u3066\u3082\u826f\u3044\uff09<\/p>\n\n\n\n<p>\u30d6\u30e9\u30a6\u30b6\u306f\u4e0a\u304b\u3089\u9806\u756a\u306bsource\u3092\u691c\u8a3c\u3057\u3066\u3044\u304d\u3001\u81ea\u5206\u306b\u3042\u3063\u305fsrc\u3092\u4f7f\u3063\u3066\u753b\u50cf\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u5408\u3046\u3082\u306e\u304c\u306a\u3044 OR picture\u30bf\u30b0\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30d6\u30e9\u30a6\u30b6\u306e\u5834\u5408\u306fimg\u30bf\u30b0\u306esrc\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3067\u3044\u3048\u3070\u3001<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><span class=\"ystdb-inline--1\"><span class=\"fz-16px\">\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30a4\u30ba\u304c480px\u4ee5\u4e0b\u3001webp\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6 =&gt;1\u756a\u306esource\u3092\u5229\u7528\u3002\u5f53\u3066\u306f\u307e\u3089\u306a\u3051\u308c\u30702\u756a\u3078<\/span><\/span><\/li><li><span class=\"ystdb-inline--1\"><span class=\"fz-16px\">webp\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6 =&gt;2\u756a\u306esource\u3002 \u5f53\u3066\u306f\u307e\u3089\u306a\u3051\u308c\u30703\u3078<\/span><\/span><\/li><li><span class=\"ystdb-inline--1\"><span class=\"fz-16px\">\u30b9\u30af\u30ea\u30fc\u30f3\u30b5\u30a4\u30ba\u304c481px\u4ee5\u4e0b =&gt;3\u756a\u306esource\u3002 \u5f53\u3066\u306f\u307e\u3089\u306a\u3051\u308c\u3070img\u30bf\u30b0\u306esrc\u3092\u4f7f\u7528<\/span><\/span><\/li><\/ol>\n\n\n\n<p>\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>webP\u8868\u793a\u306e\u5834\u5408\u3067\u3082<strong><span class=\"marker-under\">\u3001img\u30bf\u30b0\u3067\u6307\u5b9a\u3057\u305fwidth\u30fbheight\u304b\u3089\u63cf\u753b\u30b5\u30a4\u30ba\u3092\u8a08\u7b97\u3059\u308b<\/span><\/strong>\u306e\u3067\u3001img\u30bf\u30b0\u306e\u8a18\u8ff0\u3082\u308c\u304c\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CSS%E3%81%A7%E3%81%AE%E6%8C%87%E5%AE%9A\"><\/span>CSS\u3067\u306e\u6307\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3064\u3065\u3044\u3066background-image\u306a\u3069\u3001css\u3067webP\u753b\u50cf\u3092\u4f7f\u3046\u5834\u5408\u3002<\/p>\n\n\n\n<p>CSS\u306fHTML\u306e\u3088\u3046\u306btype\u5206\u5c90\u304c\u3067\u304d\u306a\u3044\u306e\u3067JavaScript\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u81ea\u5206\u3067js\u3092\u66f8\u3044\u3066\u304f\u3060\u3055\u3063\u3066\u3082\u826f\u3044\u3067\u3059\u304c\u3001Modenizr\u3044\u3046\u30b5\u30a4\u30c8\u3067\u5b8c\u6210\u54c1\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>Modenizr\uff08WebP\uff09\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3089\u300cBUILD\u300d\u3092\u30af\u30ea\u30c3\u30af\u3002\u4e00\u756a\u4e0a\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u300cdownload\u300d\u3067\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"550\" height=\"277\" src=\"https:\/\/images.mihune-web.com\/mihune\/2021\/03\/Screenshot_Modernizr.png\" alt=\"modenizt \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u753b\u9762\" class=\"wp-image-4040\" srcset=\"https:\/\/images.mihune-web.com\/mihune\/2021\/03\/Screenshot_Modernizr.png 550w, https:\/\/images.mihune-web.com\/mihune\/2021\/03\/Screenshot_Modernizr-320x161.png 320w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/figure>\n\n\n\n<p>\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u306f&lt; \/body&gt;\u3042\u305f\u308a\u3067\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code html\"><code>\u301c\u301c\n&lt;script src=\"\/path\/to\/modnizr.js\"&gt;&lt;\/script&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n\n<p>Modenizr\u304c\u8aad\u307f\u8fbc\u307e\u308c\u308b\u3068\u3001webP\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001<\/p>\n\n\n\n<pre class=\"wp-block-code html\"><code>&lt;html class=\"webp webp-alpha webp-animation webp-lossless\"&gt;<\/code><\/pre>\n\n\n\n<p>\u975e\u5bfe\u5fdc\u3060\u3068<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;html class=\"no-webp\"&gt;<\/code><\/pre>\n\n\n\n<p>\u306e\u3088\u3046\u306b\u30af\u30e9\u30b9\u4ed8\u4e0e\u3055\u308c\u308b\u306e\u3067\u3001<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">.webp .section{\n\u3000background:url('image.webp')\n}\n\n.no-webp 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