There is already a German language version. See here in the Help file.
File > Settings > Language Tab > Select Deutsch (German) then restart Portrait Professional. It will (should) be in German
If the selection is "Automatic" it should recognise your installed Windows language version and open in your language.
Alternatively, as well as English there are French, Spanish, Italian & Portugese language versions. Sorry, no Japanese or Chinese (Traditional) yet but Anthropics must surely be working on them !
File > Settings > Language Tab > Select Deutsch (German) then restart Portrait Professional. It will (should) be in German
If the selection is "Automatic" it should recognise your installed Windows language version and open in your language.
Alternatively, as well as English there are French, Spanish, Italian & Portugese language versions. Sorry, no Japanese or Chinese (Traditional) yet but Anthropics must surely be working on them !