Hi,
I have been translating PDF24 into Portuguese(Portugal) since version 9 if I am not mistaken. I have been updating and improving the translation since it was incomplete and with some translations in Brazilian Portuguese. The translation is currently 100% translated and according to the new spelling agreement Portuguese Language Orthographic Agreement of 1990 - Wikipedia. Whenever a new version of PDF24 is released, I update it and send the respective translation to Stefan Ziegler by email.