use a favicon in html code example
Example 1: favicon HTML
<link rel="icon" href="yourIcon.png" type="image/png">
Example 2: add favicon html
<link rel="icon" type="image/png" href="/favicon.png"/>
<link rel="icon" href="yourIcon.png" type="image/png">
<link rel="icon" type="image/png" href="/favicon.png"/>