Favicons are the 16×16 icons of websites that appear on the tab title, bookmark and on the address bar of your web browser. A Favicon is .ICO format image uploaded in your site’s root directory, this tutorial explains you how one can generate favicon form his photograph, logo or any other image of any format like .PNG, .JPEG and also .GIF.
Following are two websites that provides you favicon generator tools you can use for generating favicons online: