By default, all software supports multiple file extensions. U3 Launcher supports at least 1 different file extensions. The basic files that U3 Launcher supports are .U3I. However, not all of the extensions listed on the list are always used to save the effects of work in U3 Launcher. Very often, files with such extensions are used as source data files used by U3 Launcher.
U3 Launcher 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 U3 Launcher and try to save it in another file format, also supported by U3 Launcher.