Check out example codes for "how to add a favicon to html". It will help you in understanding the concepts better.

Code Example 1

<link rel="icon" type="image/png" href="/favicon.png"/>

Code Example 2

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

Code Example 3

<link rel="icon" href="yourIcon.png" type="image/png">

Code Example 4

<link rel='icon' href='favicon.ico' type='image/x-icon'/ >

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