Convert mng to flif Online: mng2flif

You can use Tom's Editor to easily convert images from
Multiple-image Network Graphics .MNG to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

MNG

Multiple-image Network Graphics is an image format with extension MNG.

FLIF

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