I watched a video of NCommander porting Windows 1 Applications to modern Windows. He couldn’t find a way to convert the Windows 1 icons to the newer icon format used since Windows 3. Windows 1 and Windows 2 used a monochromatic icon format that is incompatible with the new format. (Not so) Surprisingly Microsoft never offered a tool to convert these icons. Because they are monochromatic it would not make much sense anyway. But I was bored so I wrote a little tool, that converts these old icons to the new format. You can download it here.