HTML icon tab code example
Example 1: add tab icon html
<link rel="icon" href="http://example.com/favicon.png">
Example 2: html tab icon
<link rel="icon" type="image/png" href="img/icon.png">
<link rel="icon" href="http://example.com/favicon.png">
<link rel="icon" type="image/png" href="img/icon.png">