Convertico is a brand new online tool that enables you to convert ICO files to PNG files and vice versa. You can either link to the file in question and the online tool will convert the file in the background or you can choose to upload an image from your hard drive.
For this review, I submitted the link to my blogs header image which was a .png file. The converter took my large header image which was in png format and converted it to a tiny ICO file which I could then use as a favicon if I wanted to.
So if you’re in the need of an ICO image, this site is a quick and simple way of obtaining an ICO file from a PNG file.