【生成】
网址：https://www.favicon-generator.org/
把原始透明背景的PNG图上传，即生成一组适用于网站、手机的图标文件。
<link rel="apple-touch-icon" sizes="57x57" href="/apple-icon-57x57.png"> <link rel="apple-touch-icon" sizes="60x60" href="/apple-icon-60x60.png"> <link rel="apple-touch-icon" sizes="72x72" href="/apple-icon-72x72.png"> <link rel="apple-touch-icon" sizes="76x76" href="/apple-icon-76x76.png"> <link rel="apple-touch-icon" sizes="114x114" href="/apple-icon-114x114.png"> <link rel="apple-touch-icon" sizes="120x120" href="/apple-icon-120x120.png"> <link rel="apple-touch-icon" sizes="144x144" href="/apple-icon-144x144.png"> <link rel="apple-touch-icon" sizes="152x152" href="/apple-icon-152x152.png"> <link rel="apple-touch-icon" sizes="180x180" href="/apple-icon-180x180.png"> <link rel="icon" type="image/png" sizes="192x192" href="/android-icon-192x192.png"> <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="96x96" href="/favicon-96x96.png"> <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png"> <link rel="manifest" href="/manifest.json"> <meta name="msapplication-TileColor" content="#ffffff"> <meta name="msapplication-TileImage" content="/ms-icon-144x144.png"> <meta name="theme-color" content="#ffffff">
【参考】
工具：http://www.favicon-icon-generator.com