By default, the GdPicture converter only handles file types that aren't picked up by other converters, because the GdPicture converter is at the end of the list of converters in the configuration file of the Muhimbi document converter service.
With the above example, all MS Office documents that are converted into PDF will be handled by the GdPicture converter. This is because, for example, the “docx to pdf” input-output extension pair exists in the “GdPicture Office” converter, and the “GdPicture Office” converter is the first in the list.
If you convert Microsoft Office documents into PDF only, then the above configuration makes installation of the Microsoft Office dependency unnecessary.