HTML Favicon
HTML
Favicon is a small icon next to the title of a tab in the browser. A favicon or "favorite icon" is a small icon that represents a website and appears in various places in a web browser, such as browser tabs, bookmarks list, and address bar.
Favorite icon - Favicon
➔ Favicon is an image mostly in .ico extension but other format also work.
➔ It is very small image icon generally 16x16 pixels.
➔ Favicons are available for download 
➔ To add a favicon to an HTML document, the <link> element is used within the <head> section of the HTML.
➔ This increases brand recognition and helps users quickly identify a website.
HTML facicon
Type the code a below, output should look like below.
Try in your browser
Try the code below with an icon and open the file in a browser.
Example
<!DOCTYPE html>
<html>
<!-- Example: Try favicon in your browsers -->
<head>
<title>Page Title</title>
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<h1>This is a Heading</h1>
<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry.
Lorem Ipsum has been the industry's standard dummy text ever since the 1500s,
when an unknown printer took a galley of type and scrambled it to make a type specimen book.</p>
</body>
</html>
Click on the "Try it Now" button to see how it works.