Convert rm3 to flif Online: rm32flif
You can use Tom's Editor to easily convert images from
Rambrandt .RM3 to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.
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RM3
Rambrandt is an image format with extension RM3.
FLIF
Free Lossless Image Format is an image format with extension FLIF.