Convert cm to gif Online: cm2gif
You can use Tom's Editor to easily convert images from
Puzzle image from X11 .CM to CompuServe Graphics Interchange Format .GIF.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Puzzle image from X11 is an image format with extension CM.
GIF images were created by Compuserve. They can used no more than 256 colors and a single color transparenty (no Alpha channel). Today are rare since they offer low quality and huge filesizes. GIF animations are still in use.