By default, all software supports multiple file extensions. H2testw supports at least 1 different file extensions. The basic files that H2testw supports are .H2W. However, not all of the extensions listed on the list are always used to save the effects of work in H2testw. Very often, files with such extensions are used as source data files used by H2testw.
H2testw 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 H2testw and try to save it in another file format, also supported by H2testw.