Favicon is a very small image called as a website icon, shortcut icon, url icon and book mark icon that appears at the website URL when typing URL in the web browser at the top of tabs.Favicon has different sizes of 16×16,32×32,64×64 and 128×128 pixels.
Steps to create Favicon Online :-
Before creating a favicon , first create a logo or image to create in favicon, go to CoolText.Com and create and download the logo of your choice then follow these steps.
Step 1 : Open http://www.genfavicon.com/ to create Favicon
Step 2 : Select your Image, browse by computer, only choose format of image jpeg, gif and PNG.
Step 3 : Upload Image.
Step 4 : Select size of Favicon ( 16 x 16 ) or (32 x 32), better to choose 32 by 32.
Step 5 : Click on Capture and Preview.
Step 6 : Download Favicon or download PNG format favicon.
Step 7 : Save Favicon Image in your computer.
Update Favicon in Blogger in 3 Steps-:
Step 1 : To upload favicon in blogger Login in www.blogger.com
Step 2 : Now upload Favicon image in blogger in the Layout Tab, See Top area of Layout.
Step 3 : Save Template.
I think you have added successfully favicon in your blog, Check your blog in your Browser.