Icon Creator creates a Windows Icon (ICO) file for each PNG file. Simply drop one or more PNG files onto the app and an ICO file for each will be created side-by-side with the PNG file automatically.
PNG files will automatically be resized to meet ICO specifications (e.g. image sizes larger than 256 x 256) and the aspect ratio will be retained, meaning that the ICO image may not be square (for example, it may be 256 x 200) if the PNG image was not square (valid ICO files are created).
Where are all the "options"? - There aren't any, well, not visible anyway. All presets and defaults are managed by the app in the background; If this app proves popular then we'll make these visible - let us know what you want when you leave a 5-Star review :)