By default, all software supports multiple file extensions. My Notes Keeper supports at least 1 different file extensions. The basic files that My Notes Keeper supports are .MNK. However, not all of the extensions listed on the list are always used to save the effects of work in My Notes Keeper. Very often, files with such extensions are used as source data files used by My Notes Keeper.
My Notes Keeper can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via My Notes Keeper and try to save it in another file format, also supported by My Notes Keeper.