Convert cm to flif Online: cm2flif

You can use Tom's Editor to easily convert images from
Puzzle image from X11 .CM to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

CM

Puzzle image from X11 is an image format with extension CM.

FLIF

Free Lossless Image Format is an image format with extension FLIF.