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
Multiple-image Network Graphics is an image format with extension MNG.
Free Lossless Image Format is an image format with extension FLIF.