Generating a ZUGFeRD PDF with Existing XML Data using .NET C#

▤ Summary

ZUGFeRD and Factur-X are standardized formats for electronic invoices that combine a PDF document with embedded XML data. They are designed to facilitate the exchange of structured invoice data between businesses and public administrations, ensuring compatibility and compliance with German and European regulations. This article focuses on creating valid PDF/A-3b ZUGFeRD invoices from existing XML data. By adding XMP metadata, ZUGFeRD ensures that both the human-readable PDF and the machine-readable XML data are properly linked and accessible. The PDF/A-3b format ensures that the document is compliant with the ISO standard for long-term archiving and the ZUGFeRD XML data is properly linked and accessible.

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