favicon html
<link rel="shortcut icon" href="/favicon.ico">
<link rel="icon" type="image/png" href="/favicon.png" sizes="32x32">
<link rel="icon" type="image/png" href="/favicon.png" sizes="96x96">
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<meta name="msapplication-TileColor" content="#ffffff">
<meta name="msapplication-TileImage" content="/mstile-144x144.png">