SimplyIcon is a nice, little software that can quickly generate the .ICO files from any type of image files. It is a tiny application(just 0.5 Mb) and it is ready to execute file, so you don’t need to install it. SimplyIcon generates downsampled 32 x 32, 24 x 24 and 16 x 16 levels automatically. It will also generate the 128×128 level if your source image is equal to or larger than 128×128.
For making a icon out of image file, run the .exe file and just drag the image to the SimplyIcon window. It will generate the icon and save it to the location where the original image file resides. Overall, it may not be the best icon generating application, but it is surely a quick way of making custom made icons.
Download SimplyIcon 1.0