All you have to do is download the Windows-only executable file to any directory. Then drag an image over the program icon. That's it. The image will automatically be resized. By default, all images will be resized so that they are 400 pixels wide. But wait, you say, I want to make my images 200 pixels wide, or 1600 pixels wide. No problem. Just change the program name from PhotoResize400.exe to PhotoResize200.exe or PhotoResize1600.exe.
Drag and drop a file onto an executable to process the file? Whoa, who reverse engineered Macintosh OS System 7.6?
If only windows explorer showed the filename so you know what you're resizing to.
In the command prompt it says "press enter to exit". At least they're following the MS HMI guidelines (press Start to Shutdown).