how to include favicon ico in html code example

Example 1: html favicon

<link rel="shortcut icon" type="image/png" href="http://example.com/favicon.png"/>

Example 2: html favicon.ico

<! -- For .ico files -->
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon">

<! -- For .jpg/.gif/.png files -->
<link rel="icon" type="image/gif/png" href="favicon.png">

Example 3: adding a favicon in html

<link rel="icon" type="image/png" href="/favicon.png"/>
<link rel="icon" type="image/png" href="https://example.com/favicon.png"/>