<link rel="icon" type="image/png" href="logo.png" />
<link rel="shortcut icon" type="image/png" href="http://example.com/favicon.png"/>
<link rel="shortcut icon" type="image/png" href="Link to the image"/>
<link rel="icon" type="image/png" href="/favicon.png"/>
<link rel="icon" href="http://example.com/favicon.png">
<link rel="icon" href="yourIcon.png" type="image/png">
<link rel='icon' href='favicon.ico' type='image/x-icon'/ >
