Changing program settings > Options: Appearance tab

Choose File | Options and switch to the Appearance tab.

▪User interface language

The PDF Pro user interface is available in several languages. Here, you switch between English and another installed language. If you would like to use the software in another language that is not included in this list, reinstall the software in this language.

▪Theme

Here, you can choose between different color themes for the appearance of the PDF Pro user interface.