ZUGFeRD is an acronym for "Zentraler User Guide" of the "Forum elektronische Rechnung Deutschland" and is a German cross-industry data format for electronic invoice data exchange. It complies with the EN16931 standard.
The
ZUGFeRD format is a hybrid format. In addition to the XML format (for machine readability), the ZUGFeRD format also contains an image part (PDF) that can be read by the human eye.