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