Generate Favicon is a totally free web application that will allow you to create a distinctive icon with the image of your choice, that you will then be able to use for your website in the address bar or the application of your choice on your computer's desktop.
You will be able to choose any image on your computer that doesn't way more than 400kb as long as its in PGN, GIF, JPG or BMP format. Generate Favicon will transform it into one of the three sizes available, including the 16x16 standard. After that you will be able to save the image on your computer with the right mouse button, transform it into an icon or both options.
Create icons with the images that you like most thanks to Generate Favicon.