{"id":10033,"date":"2021-07-26T23:35:20","date_gmt":"2021-07-26T15:35:20","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=10033"},"modified":"2021-11-17T13:26:29","modified_gmt":"2021-11-17T05:26:29","slug":"html-picture","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2021\/07\/html-picture\/","title":{"rendered":"\u4e3a\u4ec0\u4e48HTML &lt;picture&gt;\u5143\u7d20\u5f88\u5c11\u89c1\u4eba\u4f7f\u7528\uff1f"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=10033\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=10033<\/a> \u946b\u7a7a\u95f4-\u946b\u751f\u6d3b<br \/>\n\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u5c31\u4e0d\u5fc5\u4e86\uff0c\u5c0a\u91cd\u7248\u6743\uff0c\u5708\u5b50\u5c31\u8fd9\u4e48\u5927\uff0c\u82e5\u6025\u7528\u53ef\u4ee5\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/202107-html-picture.png';<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/picture-cover.png\" width=\"480\" height=\"297\" alt=\"HTML picture\u5143\u7d20\u8be6\u89e3\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<p>HTML <code>&lt;picture&gt;<\/code>\u5143\u7d20\u51fa\u73b0\u5df2\u7ecf\u5f88\u591a\u5e74\u4e86\uff082014\u5e74\u51fa\u73b0\u7684\uff09\uff0c\u4f46\u5374\u5f88\u5c11\u89c1\u4eba\u4f7f\u7528\uff0c\u4e3a\u4ec0\u4e48\u5462\uff1f<\/p>\n<p>\u6211\u603b\u7ed3\u4e86\u4ee5\u4e0b3\u70b9\u539f\u56e0\uff1a<\/p>\n<ol>\n<li>\u65e0\u4eba\u77e5\u6653<\/li>\n<li>\u4f7f\u7528\u9ebb\u70e6<\/li>\n<li>\u53ef\u66ff\u4ee3<\/li>\n<\/ol>\n<h3>\u4e00\u3001\u8fd9\u4e2a\u5143\u7d20\u660e\u660e\u5f88\u5b9e\u7528<\/h3>\n<p>HTML <code>&lt;picture&gt;<\/code>\u5143\u7d20\u8fd8\u662f\u633a\u5b9e\u7528\u7684\uff0c\u5f80\u5f80\u548c<code>&lt;source&gt;<\/code>\u5143\u7d20\uff08\u53ef\u4ee5\u591a\u4e2a\uff09\u3001<code>&lt;img&gt;<\/code>\u5143\u7d20\uff08\u6700\u591a\u4e00\u4e2a\uff09\u4e00\u540c\u4f7f\u7528\u3002<\/p>\n<p>\u6e32\u67d3\u7684\u65f6\u5019\uff0c\u6d4f\u89c8\u5668\u4f18\u5148\u4f7f\u7528<code>&lt;source&gt;<\/code>\u5143\u7d20\uff0c<code>&lt;img&gt;<\/code>\u5143\u7d20\u515c\u5e95\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u5f53\u6211\u4eec\u9700\u8981\u5728\u4e0d\u540c\u573a\u666f\u663e\u793a\u4e0d\u540c\u56fe\u7247\u7684\u65f6\u5019\uff0c<code>&lt;picture&gt;<\/code>\u5143\u7d20\u5c31\u7279\u522b\u7684\u5b9e\u7528\u3002<\/p>\n<h4>\u4e0d\u540c\u5c3a\u5bf8\u663e\u793a\u4e0d\u540c\u56fe\u7247<\/h4>\n<p>\u8fd9\u4e2a\u529f\u80fd\u5e38\u4f7f\u7528HTML <code>media<\/code>\u5c5e\u6027\u5b9e\u73b0\u3002<\/p>\n<p>\u4f8b\u5982\u6709\u5982\u4e0bHTML\u4ee3\u7801\uff1a<\/p>\n<pre>&lt;picture&gt;\r\n  &lt;source srcset=\"rect.png\" media=\"(min-width: 640px)\"&gt;\r\n  &lt;img src=\"square.png\"&gt;\r\n&lt;\/picture&gt;<\/pre>\n<p>\u5219\u6d4f\u89c8\u5668\u7684\u5bbd\u5ea6\u5c0f\u4e8e640\u50cf\u7d20\u7684\u65f6\u5019\uff0c\u663e\u793a\u7684\u662f\u6b63\u65b9\u5411\u56fe\u7247\uff0c\u5982\u679c\u6d4f\u89c8\u5668\u7684\u5bbd\u5ea6\u5927\u4e8e640px\uff0c\u4f1a\u663e\u793a\u957f\u65b9\u5f62\u56fe\u7247\uff0cGIF\u5f55\u5c4f\u793a\u610f\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202111\/image-media.gif\" width=\"663\" height=\"371\" alt=\"media\u4e0e\u4e0d\u540c\u8bbe\u5907\u5bbd\u5ea6\u4e0d\u540c\u56fe\u50cf\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u4e5f\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202107\/html-source-media-demo.php\" rel=\"noopener\" target=\"_blank\">HTML source\u5143\u7d20media\u5c5e\u6027\u4e0d\u540c\u56fe\u7247demo<\/a><\/p>\n<h4>\u4e0d\u540c\u5bbd\u5ea6\u3001\u4e0d\u540c\u5c4f\u5e55\u5bc6\u5ea6\u663e\u793a\u4e0d\u540c\u56fe\u7247<\/h4>\n<p>\u8fd9\u4e2a\u662f\u4f7f\u7528\u4e4b\u524d\u4ecb\u7ecd\u8fc7\u7684<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=4371\">srcset\u5c5e\u6027<\/a>\uff0c\u53ef\u4ee5\u6839\u636e\u56fe\u50cf\u5c3a\u5bf8\uff08w\u63cf\u8ff0\u7b26\uff09\uff0c\u6216\u8005\u8bbe\u5907\u76f8\u4f3c\u6bd4\uff08x\u63cf\u8ff0\u7b26\uff09\u663e\u793a\u4e0d\u540c\u7684\u56fe\u50cf\u8d44\u6e90\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre>&lt;picture&gt;\r\n  &lt;source srcset=\"128px.jpg, 256px.jpg 2x, 512px.jpg 3x\"&gt;\r\n  &lt;img src=\"128px.jpg\"&gt;\r\n&lt;\/picture&gt;<\/pre>\n<p>\u6b64\u65f61\u500d\u5c4f\u663e\u793a128px.jpg\uff0c2\u500d\u5c4f\u663e\u793a256px.jpg\uff0c3\u500d\u5c4f\u663e\u793a512px.jpg\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/2021-07-26_203725.png\" width=\"455\" height=\"377\" alt=\"2\u500d\u56fe\u663e\u793a\u56fe\u7247\" class=\"alignnone size-medium\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/2021-07-26_203821.png\" width=\"484\" height=\"367\" alt=\"plus\u663e\u793a512\u5c3a\u5bf8\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u4e5f\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202107\/html-source-srcset-demo.php\" rel=\"noopener\" target=\"_blank\">HTML source\u5143\u7d20srcset\u5c5e\u6027\u4e0d\u540c\u56fe\u7247demo<\/a><\/p>\n<h4>\u4e0d\u540c\u6d4f\u89c8\u5668\u663e\u793a\u4e0d\u540c\u540e\u7f00\u56fe\u7247<\/h4>\n<p>\u6bd4\u65b9\u8bf4\u65b0\u51fa\u4e86\u4e2a\u6bd4webP<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2020\/04\/avif-image-format\/\">\u66f4\u725b\u903c\u7684\u56fe\u50cf\u683c\u5f0fAVIF<\/a>\uff0cChrome\u6d4f\u89c8\u5668\u5df2\u7ecf\u652f\u6301\u4e86\uff0c\u4f46\u662f\u5176\u5b83\u6d4f\u89c8\u5668\u4e0d\u652f\u6301\uff0c\u4f60\u53c8\u60f3\u4f7f\u7528\uff0c\u600e\u4e48\u529e\u5462\uff1f<\/p>\n<p><code>&lt;picture&gt;<\/code>\u5143\u7d20\u53ef\u4ee5\u5e2e\u5fd9\uff0c\u4e3b\u8981\u662f\u4f7f\u7528&lt;source&gt;<\/code>\u5143\u7d20\u7684<code>type<\/code>\u5c5e\u6027\u5b9e\u73b0\uff0cHTML\u4ee3\u7801\u793a\u610f\uff1a<\/p>\n<pre>&lt;picture&gt;\r\n  &lt;source srcset=\"zxx.avif\" type=\"image\/avif\"&gt;\r\n  &lt;source srcset=\"zxx.webp\" type=\"image\/webp\"&gt;\r\n  &lt;img src=\"zxx.jpg\"&gt;\r\n&lt;\/picture&gt;<\/pre>\n<p>\u5982\u679c\u6d4f\u89c8\u5668\u652f\u6301avif\u683c\u5f0f\uff0c\u90a3\u8fb9\u5c31\u52a0\u8f7d\u4f53\u79ef\u6700\u5c0f\u7684AVIF\u683c\u5f0f\uff08\u4f53\u79ef47K\uff09\uff0c\u5982\u679c\u6d4f\u89c8\u5668\u4e0d\u652f\u6301AVIF\u683c\u5f0f\uff0c\u4f46\u662f\u652f\u6301WEBP\u683c\u5f0f\uff0c\u5219\u52a0\u8f7dzxx.webp\uff08\u4f53\u79ef56K\uff09\uff0c\u5982\u679cAVIF\u548cWEBP\u56fe\u7247\u683c\u5f0f\u5f53\u524d\u6d4f\u89c8\u5668\u90fd\u4e0d\u652f\u6301\uff0c\u5219\u4f1a\u52a0\u8f7d<code>&lt;img&gt;<\/code>\u5143\u7d20\u515c\u5e95\u7684zxx.jpg\uff08\u4f53\u79ef74K\uff09\u3002<\/p>\n<p>\u6bd4\u65b9\u8bf4\u6211\u7684Chrome\u6d4f\u89c8\u5668\u7248\u672c\u662f91\uff0c\u5237\u65b0demo\u9875\u9762\uff0c\u53ef\u4ee5\u770b\u5230\u52a0\u8f7d\u7684\u662fzxx.avif\uff0c\u622a\u56fe\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/2021-07-26_213703.png\" width=\"521\" height=\"280\" alt=\"Chrome\u6d4f\u89c8\u5668\u52a0\u8f7dzxx.avif\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u800c\u6211\u7684Firefox\u6d4f\u89c8\u5668\uff0890.0.2\uff09\u52a0\u8f7d\u7684\u662fzxx.webp\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/2021-07-26_214146.png\" width=\"590\" height=\"307\" alt=\"Firefox\u52a0\u8f7dwebP\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c\u518d\u4f7f\u7528IE\u6d4f\u89c8\u5668\u67e5\u770b\uff0c100%\u662fzxx.jpg\u3002<\/p>\n<p>\u4ece\u800c\u53ef\u4ee5\u5b9e\u73b0\u6d4f\u89c8\u5668\u8d8a\u597d\uff0c\u52a0\u8f7d\u7684\u56fe\u7247\u4f53\u79ef\u8d8a\u5c0f\uff0c\u4f53\u9a8c\u8d8a\u597d\u3002<\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202107\/html-source-type-demo.php\" rel=\"noopener\" target=\"_blank\">HTML source\u5143\u7d20type\u5c5e\u6027\u4e0d\u540c\u683c\u5f0f\u56fe\u7247demo<\/a><\/p>\n<h3>\u4e8c\u3001\u4f46\u662f\u4f7f\u7528\u7684\u4eba\u4e0d\u591a<\/h3>\n<p>\u4ece\u4e0a\u9762\u6848\u4f8b\u53ef\u4ee5\u770b\u51fa\uff0c\u5982\u679c\u6709\u4e0d\u540c\u573a\u666f\u663e\u793a\u4e0d\u540c\u56fe\u7247\u7684\u9700\u6c42\uff0c<code>&lt;picture&gt;<\/code>\u5143\u7d20\u786e\u5b9e\u5f88\u5b9e\u7528\uff0c\u4f46\u662f\u4e3a\u4ec0\u4e48\u65e5\u5e38\u9879\u76ee\u5f00\u53d1\u5f88\u5c11\u89c1\u5230\u524d\u7aef\u540c\u5b66\u4f7f\u7528\u5462\uff1f<\/p>\n<h4>HTML\u5929\u751f\u52a3\u52bf\uff0c\u77e5\u9053\u7684\u4eba\u4e0d\u591a<\/h4>\n<p>\u5728\u524d\u7aef\u9886\u57df\uff0c\u5173\u4e8eHTML\u7684\u4e66\u7c4d\u51e0\u4e4e\u662f\u4e00\u7247\u7a7a\u767d\uff0c\u56e0\u4e3a\u51fa\u4e86\u6ca1\u4eba\u770b\u7684\u3002<\/p>\n<p>HTML\uff1f\u4e0d\u5c31\u662f\u4e00\u4e9b\u6807\u7b7e\u5417\uff1f<\/p>\n<p>\u6211\u4f7f\u7528Vue\u76f4\u63a5div\u4e00\u628a\u68ad\uff0c\u6548\u679c\u7167\u6837666\uff0c\u6709\u4ec0\u4e48\u597d\u5b66\u7684\u3002<\/p>\n<p>\u8fd9\u6837\u7684\u5fc3\u6001\u666e\u904d\u90fd\u662f\uff0c\u8fd9\u662f\u5f88\u6b63\u5e38\u7684\uff0cHTML\u6df1\u5165\u7684\u4e1c\u897f\u90fd\u4e0d\u662f\u4e0e\u529f\u80fd\u76f8\u5173\u7684\uff0c\u800c\u662f\u4e0e\u7528\u6237\u4f53\u9a8c\u76f8\u5173\u7684\uff0c\u800c\u5927\u591a\u6570\u7684\u5f00\u53d1\u4eba\u5458\u80fd\u591f\u628a\u529f\u80fd\u5b9e\u73b0\u5c31\u5df2\u7ecf\u5f88\u4e0d\u5bb9\u6613\u4e86\uff0c\u6ca1\u6709\u7cbe\u529b\u4e5f\u6ca1\u6709\u52a8\u529b\u53bb\u5173\u6ce8\u8fc7\u4e8e\u7ec6\u8282\u7684\u7528\u6237\u4f53\u9a8c\u76f8\u5173\u7684\u4e1c\u897f\u3002<\/p>\n<p>\u81ea\u7136\uff0cHTML\u7684\u4e1c\u897f\u4e5f\u5c31\u4e0d\u600e\u4e48\u5173\u5fc3\u4e86\uff0c\u5173\u5fc3\u7684\u4eba\u5c11\uff0c\u81ea\u7136\u4e86\u89e3<code>&lt;picture&gt;<\/code>\u5143\u7d20\u7684\u4eba\u5c31\u5c11\uff0c\u76f8\u5173\u6587\u7ae0\u7684\u4f20\u64ad\u4e5f\u5c31\u5c11\uff0c\u8fdb\u4e00\u6b65\u5bfc\u81f4\u5927\u591a\u6570\u524d\u7aef\u90fd\u4e0d\u77e5\u9053\u6709\u8fd9\u4e2a\u4e00\u4e2aHTML\u5143\u7d20\uff0c\u5c31\u7b97\u6653\u5f97\u6709\u8fd9\u6837\u4e00\u4e2a\u5143\u7d20\uff0c\u4e5f\u4e0d\u77e5\u9053\u5b83\u5177\u4f53\u662f\u5e72\u561b\u7528\u7684\u3002<\/p>\n<p>\u672c\u8d28\u4e0a\u8fd8\u662f\u5546\u4e1a\u548c\u5e02\u573a\u51b3\u5b9a\u7684\u3002<\/p>\n<h4>\u5f00\u53d1\u6210\u672c\u7684\u95ee\u9898<\/h4>\n<p>\u4e00\u4e2a\u6280\u672f\u80fd\u5426\u6d41\u884c\uff0c\u80fd\u5426\u666e\u53ca\uff0c\u770b\u7684\u4e0d\u662f\u5176\u725b\u4e0d\u725b\uff0c\u800c\u662f\u5bb9\u4e0d\u5bb9\u6613\u4e0a\u624b\uff0c\u5f00\u53d1\u6210\u672c\u662f\u4e0d\u662f\u4f4e\u3002<\/p>\n<p><code>&lt;picture&gt;<\/code>\u5143\u7d20\u4f7f\u7528\u7684\u6700\u5927\u95ee\u9898\u662f\uff0c\u65e0\u8bba\u4ec0\u4e48\u573a\u666f\uff0c\u6211\u4eec\u90fd\u9700\u8981\u51c6\u5907\u591a\u4efd\u7684\u7d20\u6750\u3002<\/p>\n<p>\u8fd9\u4e9b\u591a\u4efd\u7684\u7d20\u6750\u54ea\u91cc\u6765\u5462\uff1f<\/p>\n<p>\u662f\u4e0d\u662f\u8bbe\u8ba1\u5e08\u8981\u51c6\u5907\u591a\u4efd\uff0c\u5f00\u53d1\u8981\u51c6\u5907\u591a\u4efd\uff1f<\/p>\n<p>\u8fd9\u4e9b\u90fd\u662f\u4eba\u529b\u6210\u672c\uff0c\u6839\u672c\u4e0d\u53ef\u80fd\u6301\u4e45\u7684\uff0c\u5c31\u7b97\u5f00\u53d1\u4eba\u5458\u5f88\u656c\u4e1a\uff0c\u4e13\u95e8\u82b1\u65f6\u95f4\u505a\u4e86\u8fd9\u6837\u5f88\u68d2\u7684\u4e8b\u60c5\uff0c\u4f46\u662f\u4ee5\u540e\u7ef4\u62a4\u7684\u4eba\u5462\uff1f100%\u600e\u4e48\u7b80\u5355\u600e\u4e48\u6765\u3002<\/p>\n<p>\u4ec0\u4e48PC\u7aef\u79fb\u52a8\u7aef\uff0c\u4ec0\u4e481\u500d\u5c4f2\u500d\u5c4f\uff0c\u5168\u90e8\u90fd\u662f2\u500d\u56fe\u4e00\u628a\u68ad\uff0c\u6d6a\u8d39\u70b9\u6d41\u91cf\u5c31\u6d41\u91cf\u5457\uff0c\u81ea\u5df1\u7684\u7ee9\u6548\u548c\u8003\u6838\u53c8\u4e0d\u548c\u8fd9\u4e2a\u76f8\u5173\u3002<\/p>\n<p>\u53cd\u800c\u6211\u5f00\u53d1\u4eba\u5458\u82b1\u65f6\u95f4\u533a\u5206\u8bbe\u5907\u4f7f\u7528\u4e0d\u540c\u7d20\u6750\u53ef\u80fd\u5bfc\u81f4\u6392\u671f\u6765\u4e0d\u53ca\uff0c\u5475\u5475\uff0c\u90a3\u5c31\u9ebb\u70e6\u5927\u4e86\uff0c\u8fd9\u5c31\u662f\u73b0\u5b9e\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u6700\u597d\u662f\u7528\u5de5\u5177\u5904\u7406\u8fd9\u4e2a\u4e8b\u60c5\u3002<\/p>\n<p>\u76f4\u63a5\u5199\u4e00\u6bb5<code>&lt;img&gt;<\/code>\uff0c\u81ea\u52a8\u63d0\u53d6src\u5730\u5740\uff0c\u4f7f\u7528Node\u8f6c\u683c\u5f0f\uff0c\u8f6c\u5c3a\u5bf8\u7b49\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u8fd8\u662f\u9ebb\u70e6\uff0c\u800c\u4e14\u6709\u53ef\u80fd\u540e\u60a3\u65e0\u7a77\u3002<\/p>\n<p>\u5f53\u5e74Gulp\u6d41\u884c\u7684\u65f6\u5019\uff0cPNG\u96ea\u78a7\u56fe\u5f88\u6d41\u884c\uff0c\u6211\u8bb0\u5f97\u662f\u4f7f\u7528\u4e00\u4e2a\u53ebspritesmith\u7684\u5de5\u5177\u5408\u6210\u7684\uff0c\u76f4\u63a5\u6254PNG\u5c0f\u56fe\u6807\uff0c\u81ea\u52a8\u5408\u5e76\u6210\u96ea\u78a7\u56fe\uff0cCSS\u90fd\u5e2e\u4f60\u751f\u6210\u597d\u4e86\uff0c\u662f\u4e0d\u662f\u5f88\u5c4c\uff1f<\/p>\n<p>MD\u8fd9\u73a9\u610f\u73b0\u5728\u641e\u6b7b\u4eba\u4e86\u3002<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/1f631.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<p>\u8981\u5b89\u88c5Graphics Magick\u548cImage Magick\u8fd9\u4e24\u4e2a\u4e1c\u897f\uff0c\u989d\u5916\u5b89\u88c5\u7684\uff0c\u5728\u5de5\u7a0b\u4ee5\u5916\u7684\uff0c\u800c\u4e14windows\u7cfb\u7edf\u4e0b\u8fd9\u4e24\u4e2a\u4e1c\u897f\u5b89\u88c5\u5de8\u9ebb\u70e6\u3002<\/p>\n<p>\u8fd9\u6837\u7684\u9879\u76ee\u4ea4\u63a5\u7ed9\u73b0\u5728\u7684\u65b0\u4eba\u53bb\u7ef4\u62a4\uff0c\u6839\u672c\u5c31\u8dd1\u4e0d\u8d77\u6765\u7684\uff0c\u4f1a\u8ba9\u4eba\u5410\u8840\u7684\u3002<\/p>\n<p>\u771f\u7684\uff0c\u5f53\u521d\u76f4\u63a5\u5c31\u4e00\u4e2a\u4e00\u4e2aPNG\u56fe\u6807\u94fe\u63a5\u5c31\u597d\u4e86\uff0c\u73b0\u5728\u90fd\u662fhttp2.0\u4e86\uff0c\u8d70\u7684\u90fd\u662fCDN\uff0c\u591a\u51e0\u4e2a\u8bf7\u6c42\u5c41\u4e8b\u90fd\u6ca1\u6709\u3002<\/p>\n<p>\u540c\u6837\u7684\uff0c\u8fd9\u91cc\uff0c\u9488\u5bf9\u4e0d\u540c\u8bbe\u5907\u3001\u5bbd\u5ea6\u4f7f\u7528\u4e0d\u540c\u7684\u56fe\u7247\uff0c\u771f\u7684\uff0c\u6ca1\u5fc5\u8981\uff0c\u9664\u975e\u662f\u663e\u793a\u7684\u662f\u957f\u5f97\u5b8c\u5168\u4e0d\u540c\u7684\u56fe\u7247\uff0c\u6bd4\u5982PC\u7aef\u663e\u793a\u7684\u662f\u732b\u732b\uff0cMobile\u7aef\u663e\u793a\u662f\u72d7\u72d7\uff0c\u8fd9\u79cd\u3002<\/p>\n<h4><code>&lt;picture&gt;<\/code>\u5143\u7d20\u6709\u66ff\u4ee3\u65b9\u6848<\/h4>\n<p><code>&lt;picture&gt;<\/code>\u5143\u7d20\u7684\u8bbe\u8ba1\u521d\u8877\u662f\u597d\uff0c\u4f46\u662f\uff0c\u5176\u53ef\u4ee5\u89e3\u51b3\u7684\u6bcf\u4e00\u4e2a\u573a\u666f\u90fd\u6709\u66ff\u4ee3\u65b9\u6848\u3002<\/p>\n<p><strong>1. <\/strong>\u6bd4\u65b9\u8bf4\u4e0d\u540c\u5bbd\u5ea6\u663e\u793a\u4e0d\u540c\u56fe\u7247\u3002<\/p>\n<p>\u5982\u679c\u662f\u80cc\u666f\u56fe\uff0c\u90fd\u662fCSS <code>@media<\/code>\u67e5\u8be2\u4e00\u53e5\u641e\u5b9a\u7684\uff0c\u5b9e\u65f6\u6e32\u67d3\u54cd\u5e94\uff0c\u7ef4\u62a4\u65b9\u4fbf\uff0c\u4ee3\u7801\u5e72\u51c0\uff0c\u4eba\u89c1\u4eba\u7231\u3002<\/p>\n<p>\u5982\u679c\u662f<code>&lt;img&gt;<\/code>\u56fe\u7247\uff0c\u76f4\u63a5CSS\u9650\u5b9a\u5c3a\u5bf8\uff0c\u7136\u540e<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2015\/03\/css3-object-position-object-fit\/\">object-fit\u5c5e\u6027<\/a>\u63a7\u5236\u663e\u793a\u5c31\u597d\u4e86\uff0c\u7b80\u5355\u8f7b\u677e\uff0c\u4ee3\u7801\u5e72\u51c0\uff0c\u4eba\u89c1\u4eba\u7231\u3002<\/p>\n<p><strong>2. <\/strong>\u6bd4\u65b9\u8bf4\u4e0d\u540c\u8bbe\u5907\u5bc6\u5ea6\u663e\u793a\u4e0d\u540c\u56fe\u7247\u3002<\/p>\n<p>\u540c\u6837\u7684\uff0cCSS Medias Query\u67e5\u8be2\u4e00\u6837\u652f\u6301\uff0c\u5982\u679c\u975e\u8981\u4f7f\u7528<code>&lt;img&gt;<\/code>\u5143\u7d20\u8bbe\u7f6e\uff0c\u76f4\u63a5\u4e00\u4e2a<code>&lt;img&gt;<\/code>\u5143\u7d20\u5c31\u597d\u4e86\uff0c\u6839\u672c\u65e0\u9700<code>&lt;picture&gt;<\/code>\u5143\u7d20\u8fdb\u884c\u5d4c\u5957\uff0c<code>&lt;img&gt;<\/code>\u5143\u7d20\u4e5f\u652f\u6301srcset\u5c5e\u6027\uff0c\u8fd8\u652f\u6301sizes\u5c5e\u6027\uff0cw\u3001x\u6807\u8bc6\u7b26\uff0c\u5f88\u5f3a\u7684\u3002<\/p>\n<p>\u5177\u4f53\u53ef\u4ee5\u53c2\u89c1\u8fd9\u7bc7\u6587\u7ae0\u201c<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=4371\">\u54cd\u5e94\u5f0f\u56fe\u7247srcset\u5168\u65b0\u91ca\u4e49sizes\u5c5e\u6027w\u63cf\u8ff0\u7b26<\/a>\u201d\uff0c\u4e0b\u9762\u5c31\u662f\u4ee3\u7801\u4f7f\u7528\u793a\u610f\uff1a<\/p>\n<pre>&lt;img src=\"128px.jpg\"\r\n     srcset=\"128px.jpg 128w, 256px.jpg 256w, 512px.jpg 512w\"\r\n     sizes=\"(max-width: 360px) 340px, 128px\"&gt;<\/pre>\n<p><strong>3. 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src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202107\/2021-07-26_230443.png\" width=\"728\" height=\"221\" alt=\"webp\u5f00\u542f\u793a\u610f\" class=\"alignnone size-medium\" 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