Convert bmp to 4mi Online: bmp24mi

You can use Tom's Editor to easily convert images from
Microsoft Windows bitmap .BMP to Atari 4MI .4MI.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

BMP

Format created by Microsoft for their Windows and OS/2 operating systems. Images can be compressed or not.

4MI

Atari 4MI is an image format with extension 4MI.