{"id":1686,"date":"2019-12-02T10:59:08","date_gmt":"2019-12-02T02:59:08","guid":{"rendered":"http:\/\/www.imzouyang.com\/blog\/?p=1686"},"modified":"2020-12-22T11:00:40","modified_gmt":"2020-12-22T03:00:40","slug":"%e5%a6%82%e6%9e%9c%e4%bd%a0%e6%89%93%e7%ae%97%e4%bd%bf%e7%94%a8%e5%9b%be%e7%89%87%ef%bc%8c%e4%bd%a0%e9%9c%80%e8%a6%81%e7%b4%a7%e8%ae%b0%e4%b8%80%e4%b8%8b%e5%87%a0%e7%82%b9","status":"publish","type":"post","link":"http:\/\/www.imzouyang.com\/blog\/archives\/1686.html","title":{"rendered":"\u5982\u679c\u6253\u7b97\u4f7f\u7528\u56fe\u7247\uff0c\u9700\u7262\u8bb0\u8fd9\u4e9b\u8981\u70b9"},"content":{"rendered":"\n<p>1\u3001\u52a0\u8f7d\u56fe\u7247<\/p>\n\n\n\n<ul><li>\u6309\u9700\u4f7f\u7528 \u9884\u52a0\u8f7d\uff0c\u6bd4\u5982\u6d4f\u89c8\u9996\u5c4f\uff0c\u9884\u52a0\u8f7d\u7b2c\u4e8c\u5c4f\u2026\u2026<\/li><li>\u6309\u9700\u4f7f\u7528 \u61d2\u52a0\u8f7d\uff0c\u6bd4\u5982\u5165\u5c4f\u518d\u52a0\u8f7d<\/li><\/ul>\n\n\n\n<p>2\u3001\u52a0\u8f7d\u4e0d\u6210\u529f\u7684\u5904\u7406<\/p>\n\n\n\n<ul><li>\u6309\u9700\u4f7f\u7528 alt \u5c5e\u6027\u6765\u6307\u5b9a\u56fe\u7247\u65e0\u6cd5\u52a0\u8f7d\u65f6\u7684\u63d0\u793a\u6587\u672c<\/li><li>\u6309\u9700\u4e3a\u56fe\u7247\u6307\u5b9a\u5bbd\u9ad8\uff0c\u8fd9\u6837\u5f53\u65e0\u6cd5\u52a0\u8f7d\u65f6\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u56fe\u7247\u5bbd\u9ad8\u95ee\u9898\u5bfc\u81f4\u5e03\u5c40\u9519\u4e71\u3002<\/li><li>\u6309\u9700\u4f7f\u7528 \u9ed8\u8ba4\u56fe\u7b56\u7565<\/li><\/ul>\n\n\n\n<p>3\u3001\u56fe\u7247\u5904\u7406<\/p>\n\n\n\n<ul><li>CSS\u7cbe\u7075\u56fe(sprite)\uff1a\u5f53\u4f60\u4e3a\u56fe\u7247\u5b9e\u73b0\u4e86\u79fb\u5165\u79fb\u51fa\u6539\u53d8\u6548\u679c\u65f6\u907f\u514d\u56fe\u6807\u95ea\u70c1\/\u5f53\u4f60\u9700\u8981\u4f7f\u7528\u8bb8\u591a\u5c0f\u56fe\u65f6\uff0c\u662f\u5426\u8003\u8651\u4e86\u4f7f\u7528 \u5408\u5e76\u5404\u56fe\u50cf\u5230\u4e00\u5f20\u56fe\u4e0a<\/li><li>\u6309\u9700\u4f7f\u7528 \u54cd\u5e94\u5f0f \u56fe\u7247\u3002<\/li><li>\u6309\u9700\u4f7f\u7528 \u6253\u5305\u5de5\u5177 \u6279\u91cf\u5904\u7406\u56fe\u7247\uff0c\u6bd4\u5982\u4f7f\u7528 webpack \u7684 loader \u6765\u5904\u7406\u56fe\u7247<\/li><li>\u4f7f\u7528 \u56fe\u7247\u538b\u7f29 \uff0c\u6bd4\u5982 TinyPng(https:\/\/tinypng.com\/) \u3001\u667a\u56fe(https:\/\/zhitu.isux.us\/) \u3002<\/li><\/ul>\n\n\n\n<p>4\u3001\u56fe\u6807<\/p>\n\n\n\n<ul><li>\u662f\u5426\u8003\u8651\u8fc7\u5c06\u56fe\u7247\u56fe\u6807\uff0c\u6539\u4e3a\u4f7f\u7528 svg\u3001 \u5b57\u4f53\u56fe\u6807 icon-font <\/li><li>\u6309\u9700\u8003\u8651 \u7b80\u5355\u56fe\u6807\uff0c\u4ea6\u53ef CSS \u753b\u51fa\u6765\u3002<\/li><li>\u6309\u9700\u4f7f\u7528 base64 \u4ee3\u66ff\u5c0f\u56fe\u6807\uff0c\u4ea6\u53ef\u901a\u8fc7 \u6253\u5305\u5de5\u5177 \u6765\u6279\u91cf\u751f\u6210<\/li><\/ul>\n\n\n\n<p>5\u3001\u80cc\u666f\u56fe\uff1a<\/p>\n\n\n\n<ul><li>\u80cc\u666f\u56fe\u50cf\u662f\u5426\u589e\u52a0\u4e86\u9875\u9762\u7684\u52a0\u8f7d\u65f6\u95f4\u3002<\/li><li>\u80cc\u666f\u56fe\u50cf\u662f\u5426\u4e0e\u9875\u9762\u4e2d\u7684\u5176\u4ed6\u56fe\u8c61\u642d\u914d\u826f\u597d\u3002<\/li><li>\u80cc\u666f\u56fe\u50cf\u662f\u5426\u4e0e\u9875\u9762\u4e2d\u7684\u6587\u5b57\u989c\u8272\u642d\u914d\u826f\u597d\u3002<\/li><li>\u56fe\u50cf\u5728\u9875\u9762\u4e2d\u5e73\u94fa\u540e\uff0c\u770b\u4e0a\u53bb\u8fd8\u53ef\u4ee5\u5417\uff1f<\/li><li>\u5bf9\u6587\u5b57\u7684\u6ce8\u610f\u529b\u88ab\u80cc\u666f\u56fe\u50cf\u55a7\u5bbe\u593a\u4e3b\u4e86\u5417\uff1f<\/li><li>\u4f7f\u7528\u5927\u80cc\u666f\u56fe\u65f6\u53ef\u8bbe\u7f6e\u4e00\u4e2a\u7b26\u5408\u89c6\u89c9\u7684\u80cc\u666f\u8272\u4f5c\u4e3a\u886c\u5e95\u3002<\/li><\/ul>\n\n\n\n<p>6\u3001\u72ec\u7acb\u7684\u56fe\u7247\u670d\u52a1\u5668\u3001\u72ec\u7acb\u56fe\u7247\u57df\u540d\u3001CDN\u52a0\u901f\u3001H5\u672c\u5730\u5b58\u50a8\u7684\u914d\u5408\u4f7f\u7528<\/p>\n\n\n\n<p>7\u3001img \u7684 Srcset \u5c5e\u6027\u7684\u9009\u62e9\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;img src=\"ing.jpg\" srcset=\"img.jpg, img2x.jpg 2x\" alt=\"img\">\n&lt;img src=\"img.jpg\" srcset=\"img1024.jpg 1024w, img2048.jpg 2048w\" alt=\"img\">\n\nsrcset \u662f\u4e3a\u4e86\u90a3\u4e9b\u652f\u6301\u8be5\u5c5e\u6027\u7684\u6d4f\u89c8\u5668\u3002img2x.jpg\u662f\u4e3a\u4e86\u9002\u914ddpr = 2\u7684retina\u5c4f\u5e55\u3002\nimg1024 \u662f\u4e3a\u4e86\u9002\u914d\u5bbd\u5ea6\u4e3a 1024 \u50cf\u7d20\u7684\u5c4f\u5e55\u3002\n\u8bbe\u7f6e src \u662f\u9632\u6b62\u6d4f\u89c8\u5668\u4e0d\u652f\u6301 srcset \u5c5e\u6027<\/code><\/pre>\n\n\n\n<p>8\u3001css image-set() \u7684\u9009\u62e9\u4f7f\u7528\uff1a<\/p>\n\n\n\n<p>\u4e3a\u4e0d\u540c\u7684\u8bbe\u5907\u5206\u914d\u5408\u9002\u5f97\u56fe\u50cf :<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.box {\n  background-image: image-set( \"test.png\" 1x, \"test-2x.png\" 2x, \"test-print.png\" 600dpi );\n}<\/code><\/pre>\n\n\n\n<p>9\u3001SVG\u672c\u8eab\u4f53\u79ef\u5df2\u7ecf\u5f88\u5c0f\u4e86\uff0c\u4f46\u662f\u4f60\u8fd8\u53ef\u4ee5\u901a\u8fc7\u538b\u7f29\u8ba9\u5b83\u4eec\u66f4\u5c0f\uff1a<\/p>\n\n\n\n<ul><li>\u4f7f\u7528webpack\u7684loader\u53ef\u4ee5\u6709\u6548\u5730\u538b\u7f29SVG\u4f53\u79ef\u3002\u7528svgo-loader\u53bb\u9664\u65e0\u7528\u5c5e\u6027\u3001\u7528svg-sprite-loader\u5408\u5e76\u591a\u4e2aSVG<\/li><li>SvgOmg<\/li><li>Svg-optimiser<\/li><\/ul>\n\n\n\n<p>10\u3001\u638c\u63e1 \u5404\u56fe\u7247\u7684\u683c\u5f0f\uff0c\u6bcf\u79cd\u683c\u5f0f\u7684\u4f18\u7f3a\u70b9\u3001\u9002\u7528\u573a\u666f<\/p>\n\n\n\n<ul><li>JPEG\uff1a<br>\u6709\u635f\u538b\u7f29\uff0c\u8272\u5f69\u4fe1\u606f\u4fdd\u7559\u597d\uff0c\u652f\u6301 24\u4f4d \u771f\u5f69\u8272\uff08\u6bcf\u4e2a\u50cf\u7d20\u70b9\u53ef\u4ee5\u663e\u793a 2\u768424\u6b21\u65b9 \u79cd\u989c\u8272\uff0c\u5927\u6982\u662f1600\u4e07\u79cd\u989c\u8272\uff09\uff1b<br>\u4e0d\u652f\u6301\u900f\u660e\u8272\u3001\u4e0d\u652f\u6301\u52a8\u753b\uff1b<br>\u5728\u8272\u8c03\u53ca\u989c\u8272\u5e73\u6ed1\u53d8\u5316\u7684\u76f8\u7247\u6216\u662f\u5199\u5b9e\u7ed8\u753b\uff08painting\uff09\u4e0a\u53ef\u4ee5\u8fbe\u5230\u5b83\u6700\u4f73\u7684\u6548\u679c\uff0c\u538b\u7f29\u8d28\u91cf\u53ef\u4ee5\u6839\u636e\u9700\u8981\u6765\u9009\u62e9\uff0c\u538b\u7f29\u6bd4\u7387\u8d8a\u5927\u8d28\u91cf\u8d8a\u5dee\uff1b<br>\u4e0d\u9002\u5408\u4e8e\u7ebf\u6761\u7ed8\u56fe\uff08drawing\uff09\u548c\u5176\u4ed6\u6587\u5b57\u6216\u56fe\u793a\uff08iconic\uff09\u7684\u56fe\u5f62\u3002\u538b\u7f29\u7387\u8d8a\u9ad8\uff0c\u8d28\u91cf\u8d8a\u5dee\u3002<\/li><li>GIF\uff1a<br>\u65e0\u635f\u538b\u7f29\uff0cGIF \u662f 8\u4f4d \u8272\u5f69\uff0c\u6bcf\u4e2a\u50cf\u7d20\u70b9\u53ea\u80fd\u663e\u793a256\u8272\u3002GIF\u5206\u4e3a \u9759\u6001GIF \u548c \u52a8\u753bGIF\uff1b<br>\u652f\u6301\u900f\u660e\u8272\u3001\u652f\u6301\u52a8\u753b\u3001\u201c\u4f53\u578b\u201d\u5f88\u5c0f\uff1b<br>\u7531\u4e8e\u989c\u8272\u5355\u4e00\uff0c\u6240\u4ee5\u9002\u7528\u4e8e\u5177\u6709\u5355\u8272\u6216\u989c\u8272\u6570\u5c11\u7684\u56fe\u50cf\uff0c\u4e0d\u4ec5\u80fd\u83b7\u5f97\u66f4\u5c0f\u7684\u6587\u4ef6\u4f53\u79ef\uff0c\u8fd8\u4e0d\u4f1a\u5f71\u54cd\u753b\u8d28\uff08\u5982 \u7ebf\u72b6\u56fe\u3001Logo \u7b49\uff09\u3002<\/li><li>PNG\uff1a<br>\u65e0\u635f\u538b\u7f29\uff0c\u4e3b\u8981\u6709 PNG-8\uff088\u4f4d \u652f\u6301256\u79cd\u989c\u8272\uff09\u3001PNG-24\u3001PNG-32 \u7684\u4e09\u79cd\u683c\u5f0f\uff0c\u8272\u5f69\u4e30\u5bcc\u7a0b\u5ea6\u9012\u589e\uff1b<br>\u652f\u6301\u900f\u660e\uff08\u4f4624\u4f4dPNG\u4e0d\u652f\u6301\u900f\u660e\uff09\u4e14\u6bd4 GIF \u900f\u660e\u6548\u679c\u66f4\u597d\uff0c\u4e0d\u652f\u6301\u52a8\u753b\uff1b<br>\u76f8\u6bd4 JPEG\uff0c\u9632\u952f\u9f7f PNG \u975e\u5e38\u6709\u4f18\u52bf\uff1b<br>PNG \u6587\u4ef6\u5bb9\u91cf\u8f83\u5927\uff0c\u4e0d\u9002\u5408\u65e5\u5e38\u7684\u4f20\u64ad\u6d41\u901a\uff0c\u5176\u8bbe\u8ba1\u76ee\u7684\u662f\u4e3a\u4e86\u66ff\u4ee3 GIF\u548cTIFF\u6587\u4ef6\u683c\u5f0f\u3002<\/li><li>\u5982\u679c\u4f60\u60f3\u53c8\u5177\u6709png\u7684\u54c1\u8d28\u53c8\u53ef\u662f\u52a8\u56fe\u6216\u8005\u9759\u56fe\uff0c\u53ef\u4ee5\u8003\u8651 WebP \u56fe\u7247\u683c\u5f0f\u3002<\/li><li>\u5176\u5b83\uff0c\u6bd4\u5982\uff0cBMP\uff1a\u90fd\u6216\u591a\u6216\u5c11\u56e0\u4e3a\u4e00\u4e9b\u539f\u56e0\u6ca1\u80fd\u5728web\u9886\u57df\u5360\u9886\u5730\u76d8\u3002<\/li><\/ul>\n\n\n\n<p>PS:<\/p>\n\n\n\n<p>1) JPEG\u56fe\u7247\u7684\u4fdd\u5b58\u652f\u63012\u79cd\u65b9\u5f0f\uff0c\u4e0d\u540c\u7684\u4fdd\u5b58\u65b9\u5f0f\u4f1a\u5bf9\u5e94\u663e\u793a\u65f6\u7684\u65b9\u5f0f\uff1a<br>\u57fa\u7ebf\u5f0f\uff08\u56fe\u7247\u5728\u663e\u793a\u65f6\uff0c\u52a0\u8f7d\u65b9\u5f0f\u662f\u4e00\u884c\u884c\u4ece\u4e0a\u5f80\u4e0b\u52a0\u8f7d\u51fa\u6765\uff09\u3001<br>\u6e10\u8fdb\u5f0f\uff08\u56fe\u7247\u5728\u663e\u793a\u65f6\uff0c\u5148\u663e\u793a\u4e00\u4e2a\u6a21\u7cca\u7684\u8f6e\u5ed3\uff0c\u968f\u7740\u52a0\u8f7d\u4f1a\u8d8a\u6765\u8d8a\u6e05\u6670\uff09<br><br>JPEG2000\uff09\u65b0\u4e00\u4ee3\u538b\u7f29\u54c1\u8d28\u66f4\u597d\u7684\u683c\u5f0f\u3002 \u5c55\u73b0\u65b9\u5f0f\u4e3a\u6e10\u8fdb\u52a0\u8f7d\u56fe\u7247\uff0c\u5148\u4f20\u8f93\u56fe\u7247\u8f6e\u5ed3\u5448\u73b0\u6a21\u7cca\u5916\u89c2\uff0c\u518d\u6e10\u6e10\u7684\u663e\u793a\u51fa\u6e05\u6670\u7684\u539f\u56fe\u3002 \u538b\u7f29\u7387\u6bd4\u6807\u51c6JPEG\u9ad8\u7ea630%\uff0c\u652f\u6301\u65e0\u635f\u548c\u6709\u635f\u538b\u7f29\u3002<br><br>\u6bd4\u5982 PS\u5185\u4fdd\u5b58 JPEG\u65f6\u53ef\u4ee5\u9009\u62e9\u683c\u5f0f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"328\" height=\"306\" src=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image11.png\" alt=\"\" class=\"wp-image-2237\" srcset=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image11.png 328w, http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image11-300x280.png 300w\" sizes=\"(max-width: 328px) 100vw, 328px\" \/><\/figure>\n\n\n\n<p>2)\u4e00\u5f20\u56fe\u5c55\u793a\u5982\u4f55\u9009\u62e9\u56fe\u7247<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"420\" height=\"240\" src=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image22.png\" alt=\"\" class=\"wp-image-2236\" srcset=\"http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image22.png 420w, http:\/\/www.imzouyang.com\/blog\/wp-content\/uploads\/2020\/07\/image22-300x171.png 300w\" sizes=\"(max-width: 420px) 100vw, 420px\" \/><\/figure>\n\n\n\n<p>11\u3001\u4f7f\u7528 React \u5c06 SVG \u5185\u8054\u5230 HTML \u4e2d\uff0c\u800c\u4e0d\u662f\u5c06 SVG \u4ee5 img \u7684\u65b9\u5f0f\u663e\u793a\u3002<br>\u8fd9\u6837\u53ef\u4ee5\u9632\u6b62\u56fe\u6807\u5728\u5176\u4ed6\u5185\u5bb9\u4e4b\u540e\u51fa\u73b0\u65f6\u95ea\u70c1\u3002<br>\u56e0\u4e3a\u8fd9\u4e9b SVG \u73b0\u5728\u662f\u6709\u6548\u7684 JavaScript\uff0c\u6240\u4ee5\u5b83\u4eec\u53ef\u4ee5\u548c\u5468\u56f4\u7684\u7ec4\u4ef6\u4e00\u8d77\u5b9e\u73b0\u5e72\u51c0\u7684\u5355\u6b21\u6e32\u67d3\u3002\u5728\u52a0\u8f7d js \u7684\u540c\u65f6\u52a0\u8f7d\u8fd9\u4e9b SVG \u7684\u597d\u5904\u5927\u4e8e SVG \u7684\u7ed8\u5236\u6027\u80fd\u3002\u901a\u8fc7\u5185\u8054\uff0c\u4e0d\u4f1a\u51fa\u73b0\u56fe\u6807\u95ea\u70c1\u3002<\/p>\n\n\n\n<p>12\u3001\u6309\u9700\u4e3a\u56fe\u7247\u6307\u5b9a \u6700\u5927\u3001\u6700\u5c0f \u5bbd\u9ad8\u5ea6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>img { max-width: 100%;}<\/code><\/pre>\n\n\n\n<p>win \u5e73\u53f0\u7f29\u653e\u56fe\u7247\u65f6\uff0c\u53ef\u80fd\u51fa\u73b0\u56fe\u50cf\u5931\u771f\u73b0\u8c61\u3002\u53ef\u4f7f\u7528 IE \u4e13\u6709\u547d\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>img { -ms-interpolation-mode: bicubic; }<\/code><\/pre>\n\n\n\n<p>13\u3001\u5f53\u4e3a \u9f20\u6807 \u81ea\u5b9a\u4e49\u9f20\u6807\u6307\u9488\u56fe\u7247\u65f6\uff0c\u9700\u8bbe\u7f6e\u5907\u9009\u56fe\u6807\u3002<br>\u4e0b\u4f8b\uff0c\u5982\u679c cur\u56fe\u7247 \u6ca1\u52a0\u8f7d\u8fdb\u6765\u6216\u51fa\u9519\u4e86\uff0c\u90a3\u4e48\u5c31\u7528\u7b2c\u4e8c\u5907\u9009pointer\u6837\u5f0f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>body{\n  cursor:url(xxxx.cur) ,pointer; \n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u52a0\u8f7d\u56fe\u7247 \u6309\u9700\u4f7f\u7528 \u9884\u52a0\u8f7d\uff0c\u6bd4\u5982\u6d4f\u89c8\u9996\u5c4f\uff0c\u9884\u52a0\u8f7d\u7b2c\u4e8c\u5c4f\u2026\u2026 \u6309\u9700\u4f7f\u7528 \u61d2\u52a0\u8f7d\uff0c\u6bd4\u5982\u5165\u5c4f\u518d\u52a0\u8f7d 2\u3001\u52a0\u8f7d\u4e0d\u6210 &hellip; <a href=\"http:\/\/www.imzouyang.com\/blog\/archives\/1686.html\" class=\"read-more\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text sr-only\">\u5982\u679c\u6253\u7b97\u4f7f\u7528\u56fe\u7247\uff0c\u9700\u7262\u8bb0\u8fd9\u4e9b\u8981\u70b9<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"aside","meta":[],"categories":[30],"tags":[],"_links":{"self":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1686"}],"collection":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/comments?post=1686"}],"version-history":[{"count":24,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1686\/revisions"}],"predecessor-version":[{"id":2385,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/1686\/revisions\/2385"}],"wp:attachment":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/media?parent=1686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/categories?post=1686"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/tags?post=1686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}