{"id":1333,"date":"2025-07-20T22:11:54","date_gmt":"2025-07-20T13:11:54","guid":{"rendered":"https:\/\/shinke1987.net\/?p=1333"},"modified":"2025-07-20T22:11:54","modified_gmt":"2025-07-20T13:11:54","slug":"webp%e5%80%8b%e4%ba%ba%e7%9a%84%e3%81%be%e3%81%a8%e3%82%81","status":"publish","type":"post","link":"https:\/\/shinke1987.net\/?p=1333","title":{"rendered":"WebP\u500b\u4eba\u7684\u307e\u3068\u3081"},"content":{"rendered":"\n<h2 id=\"toc0\" class=\"wp-block-heading\">\u7d50\u8ad6<\/h2>\n\n\n\n<p>\u30d9\u30af\u30bf\u30fc\u5f62\u5f0f\u306e\u753b\u50cf\uff08SVG\u7b49\uff09\u3067\u3042\u308b\u5fc5\u8981\u304c\u7121\u304f\u3066\u3001\u5370\u5237\u7269\u306b\u4f7f\u3046\u3082\u306e\u3067\u306a\u304f\u3066\u3001\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u306b\u5bfe\u5fdc\u3059\u308b\u5fc5\u8981\u304c\u7121\u3051\u308c\u3070\u3001WebP\u3067\u826f\u3044\u3002<\/p>\n\n\n\n<h2 id=\"toc1\" class=\"wp-block-heading\">WebP\u3092\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u30b5\u30dd\u30fc\u30c8\u3059\u308bWeb\u30d6\u30e9\u30a6\u30b6\u500b\u4eba\u7684\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u5b9f\u969b\u306b\u306fWebP\u306e\u6a5f\u80fd\u306b\u3088\u3063\u3066Web\u30d6\u30e9\u30a6\u30b6\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u9055\u3046\u304c\u3001\u9762\u5012\u306a\u3089\u4e0b\u8a18\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u4ee5\u4e0a\u306a\u3089\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3068\u8003\u3048\u3066\u826f\u3044\u3002<\/p>\n\n\n\n<p>\uff08\u53c2\u8003\uff1a<a href=\"https:\/\/developers.google.com\/speed\/webp\/faq?hl=ja#which_web_browsers_natively_support_webp\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/developers.google.com\/speed\/webp\/faq?hl=ja#which_web_browsers_natively_support_webp<\/a>\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Google Chrome ( PC \/ Android ) 32 \u4ee5\u964d<\/li>\n\n\n\n<li>Microsoft Edge 18 \u4ee5\u964d<\/li>\n\n\n\n<li>Firefox 65 \u4ee5\u964d<\/li>\n\n\n\n<li>Opera 19 \u4ee5\u964d<\/li>\n\n\n\n<li>Safari 14 \u4ee5\u964d ( iOS 14 \u4ee5\u964d\u3001macOS Big Sur \u4ee5\u964d )<\/li>\n<\/ul>\n\n\n\n<h2 id=\"toc2\" class=\"wp-block-heading\">\u3055\u304f\u3089\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304b\u3089\u306e\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\uff08<a href=\"https:\/\/imageflux.sakura.ad.jp\/column\/webp\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/imageflux.sakura.ad.jp\/column\/webp\/<\/a>\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Jpeg\u3084PNG\u3068\u6bd4\u3079\u3066\u753b\u8cea\u3092\u307b\u307c\u640d\u306a\u308f\u305a\u306b\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u5927\u5e45\u306b\u8efd\u91cf\u5316\u3067\u304d\u308b\u3002<\/li>\n\n\n\n<li>2010\u5e74\u306bGoogle\u304c\u958b\u767a\u3057\u305f\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u3002<\/li>\n\n\n\n<li>\u62e1\u5f35\u5b50\u306f.webp<\/li>\n\n\n\n<li>\u53ef\u9006\u5727\u7e2e\u30fb\u975e\u53ef\u9006\u5727\u7e2e\u306e\u4e21\u65b9\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>PNG\u3067\u53ef\u80fd\u3060\u3063\u305f\u80cc\u666f\u900f\u904e\u306fWebP\u3067\u3082\u53ef\u80fd\u3002<\/li>\n\n\n\n<li>GIF\u306e\u3088\u3046\u306b\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u3066\u3001GIF\u3088\u308a\u9ad8\u3044\u5727\u7e2e\u7387\u3068\u54c1\u8cea\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>\u8868\u73fe\u3067\u304d\u308b\u8272\u306fJpeg\u3084PNG\u3068\u540c\u3058\u3002<\/li>\n\n\n\n<li>\u53e4\u3044Web\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3002<\/li>\n\n\n\n<li>\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044Web\u30d6\u30e9\u30a6\u30b6\u306f\u6b21\u306e\u3082\u306e\u304c\u3042\u308b\u3002\n<ul class=\"wp-block-list\">\n<li>Internet Explorer 11 \u4ee5\u4e0b<\/li>\n\n\n\n<li>Safari 13 \u4ee5\u4e0b<\/li>\n\n\n\n<li>Android Browser 4.4 \u4ee5\u4e0b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u975e\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u30e6\u30fc\u30b6\u306f2024\u5e74\u6642\u70b9\u3067\u5168\u4f53\u306e3%\u3089\u3057\u3044\u3002<\/li>\n\n\n\n<li>CUI\u3067WebP\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306e\u4ee3\u8868\u7684\u306a\u30c4\u30fc\u30eb\u306f\u300ccWebP\u300d\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"toc3\" class=\"wp-block-heading\">WikiPedia\u304b\u3089\u306e\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\uff08<a href=\"https:\/\/ja.wikipedia.org\/wiki\/WebP\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/ja.wikipedia.org\/wiki\/WebP<\/a>\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u5404\u7a2e\u30c4\u30fc\u30eb\u3068\u5171\u306b\u63d0\u4f9b\u304c\u958b\u59cb\u3055\u308c\u305f\u3002<\/li>\n\n\n\n<li>Jpeg, PNG, GIF\u306e\u7f6e\u304d\u63db\u3048\u3092\u610f\u56f3\u3059\u308b\u898f\u683c\u3002<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c6\u30ca\u3068\u3057\u3066RIFF\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>\u30b3\u30f3\u30c6\u30ca\u90e8\u5206\u3092\u9664\u304f\u3068\u975e\u53ef\u9006\u306eWebP\u306f1\u30d5\u30ec\u30fc\u30e0\u306eWebM\u3002<\/li>\n\n\n\n<li>EXIF\u7b49\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>CMYK\u30ab\u30e9\u30fc\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u3002<\/li>\n\n\n\n<li>\u300c\u30a6\u30a7\u30c3\u30d4\u30fc\u300d\u3068\u767a\u97f3\u3059\u308b\u3002<\/li>\n\n\n\n<li>RFC9649\u3067\u898f\u683c\u5316\u3055\u308c\u3066\u3044\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"toc4\" class=\"wp-block-heading\">Google\u304b\u3089\u306e\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\uff08<a href=\"https:\/\/developers.google.com\/speed\/webp?hl=ja\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/developers.google.com\/speed\/webp?hl=ja<\/a>\uff09<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>WebP\u306e\u975e\u53ef\u9006\u5727\u7e2e\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u306fPNG\u306b\u6bd4\u3079\u306626%\u5c0f\u3055\u304f\u306a\u308b\u3002<\/li>\n\n\n\n<li>WebP\u306e\u975e\u53ef\u9006\u5727\u7e2e\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u306fSSIM\u753b\u8cea\u6307\u6a19\u304c\u540c\u7b49\u306eJpeg\u3088\u308a\u308225%\u301c34%\u5c0f\u3055\u304f\u306a\u308b\u3002<br>\uff08SSIM = \u3053\u306e\u5834\u5408\u3001\u5143\u306e\u753b\u50cf\u3068\u3069\u308c\u3060\u3051\u8fd1\u3044\u304b\u3092\u793a\u3059\u5024\u3002\u5168\u304f\u540c\u3058\u753b\u50cf\u306e\u5834\u5408\u3001SSIM\u306f1\u3068\u306a\u308b\u3089\u3057\u3044\uff09<\/li>\n\n\n\n<li>\u53ef\u9006WebP\u306f\u30b5\u30a4\u30ba\u304c22%\u5927\u304d\u304f\u306a\u308b\u3060\u3051\u3067\u900f\u660e\u5ea6\uff08\u30a2\u30eb\u30d5\u30a1\u30c1\u30e3\u30cd\u30eb\uff09\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u975e\u53ef\u9006WebP\u3067\u306f\u900f\u660e\u5ea6\u3082\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3001\u901a\u5e38PNG\u306e3\u5206\u306e1\u306e\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306b\u306a\u308b\u3002<\/li>\n\n\n\n<li>\u975e\u53ef\u9006\u5727\u7e2e\u3001\u53ef\u9006\u5727\u7e2e\u3001\u900f\u904e\u3001\u306f\u5168\u3066\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3WebP\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<h2 id=\"toc5\" class=\"wp-block-heading\">WebP\u306e\u30d6\u30e9\u30a6\u30b6\u30b5\u30dd\u30fc\u30c8\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306e\u8cc7\u6599<\/h2>\n\n\n\n<p><a href=\"https:\/\/developers.google.com\/speed\/webp\/faq?hl=ja#how_can_i_detect_browser_support_for_webp\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/developers.google.com\/speed\/webp\/faq?hl=ja#how_can_i_detect_browser_support_for_webp<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7d50\u8ad6 \u30d9\u30af\u30bf\u30fc\u5f62\u5f0f\u306e\u753b\u50cf\uff08SVG\u7b49\uff09\u3067\u3042\u308b\u5fc5\u8981\u304c\u7121\u304f\u3066\u3001\u5370\u5237\u7269\u306b\u4f7f\u3046\u3082\u306e\u3067\u306a\u304f\u3066\u3001\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u306b\u5bfe\u5fdc\u3059\u308b\u5fc5\u8981\u304c\u7121\u3051\u308c\u3070\u3001WebP\u3067\u826f\u3044\u3002 WebP\u3092\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u30b5\u30dd\u30fc\u30c8\u3059\u308bWeb\u30d6\u30e9\u30a6\u30b6\u500b\u4eba\u7684\u307e\u3068\u3081 \u5b9f\u969b\u306b\u306fWebP\u306e\u6a5f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[125],"class_list":["post-1333","post","type-post","status-publish","format-standard","hentry","category-javascript","tag-webp"],"_links":{"self":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/1333","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1333"}],"version-history":[{"count":2,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/1333\/revisions"}],"predecessor-version":[{"id":1335,"href":"https:\/\/shinke1987.net\/index.php?rest_route=\/wp\/v2\/posts\/1333\/revisions\/1335"}],"wp:attachment":[{"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shinke1987.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}