Convert mng to bmp Online: mng2bmp
You can use Tom's Editor to easily convert images from
Multiple-image Network Graphics .MNG to Microsoft Windows bitmap .BMP.
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.
Format created by Microsoft for their Windows and OS/2 operating systems. Images can be compressed or not.