Favicon is a small icon displayed before the website URL on the address bar. A unique favicon can catch instant user attention and long-term familiarity with a specific website or blog. If you are not sure regarding, if a website or blog has a favicon – here is a quick check web service, favicon validator.
Check if your site is using and correctly implementing a favicon. Favicons are small icons that appear in your browser's URL navigation bar. They are also saved next to your URL's title when your page is bookmarked. This helps brand your site and make it easy for users to navigate to your site among a list of bookmarks.
What is a favicon
Favicon is the classic ICO file of 16 × 16, with 16 or 24-bit color and transparency support. Much later, it appeared in a 32 × 32 size, but older browsers still reduce it to 16 × 16. Today, it is an important component of the website interface, which also plays an important role in advanced web applications. It is shown at the top of the web browser.
This component is a kind of visiting card, so it should be created in the same style as the site – the more your website and icon have in common, the better. The main function of such branded icons is to visualize the website’s main functions in one little image. In addition, the icon should be relevant and clear: the user should immediately understand what is drawn on it, and it also has to be memorable.
To add a favicon to your site, you need to have your logo created in a 16x16 PNG, GIF or ICO image and uploaded to your web server. Then it's simply a matter of adding the following code into the header of your HTML code for your web pages:
<head><link rel="icon" type="image/x-icon" href="url_to_my_favicon" /><title>My Title</title></head>