By default, all software supports multiple file extensions. Project Viewer supports at least 2 different file extensions. The basic files that Project Viewer supports are .MPP. However, not all of the extensions listed on the list are always used to save the effects of work in Project Viewer. Very often, files with such extensions are used as source data files used by Project Viewer.
Project Viewer 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 Project Viewer and try to save it in another file format, also supported by Project Viewer.