A FavIcon is a small 16 x 16 pixel graphic icon located in the URL address bar of your browser.
Introduction to a Favicon
A website designer creates the small icon by loading a small picture into a generator app found on a website.
The generator app we like to use can be found here...A website that generates your favicon.
Placement of a favicon
The favicon can be used in a number of other places, as a desktop icon, next to the page name in a list of bookmarks.It is primary used to increase the brand awareness of your website.
To summarise a favicon
You can read more in-depth information about the history, development and browser support of the favicon at the following address, https://en.wikipedia.org/wiki/Favicon