ZUGFeRD and it's successor Factur-X are initiatives from German (respectively European) government to foster electronic invoices.
It is based on using PDF/A-3 to store invoices along with embedded xml descriptor for easy processing.
A special favor is the so-called XRechnung which is also supported...
The Konik ZUGFEeRD library for .NET allows creating, reading and validating ZUGFeRD compliant invoices. This library is not only able to create the ZUGFeRD invoice model but can also modify and convert PDF files allowing attaching the generated invoices into PDF and vice versa.
Konik ZUGFeRD for...
3-Heights™ PDF to PDF/A Converter is a fast and robust API for converting PDF documents to PDF/A and adding PDF/A-conform long-term digital signatures (PAdES). All established PDF/A conformance levels (PDF/A-1, PDF/A-2, PDF/A-3) and their sublevels are supported.
Ideal for automating your business...
With the Aloaha ZUGFeRD SDK you can create and read ZUGFeRD and XInvoice XML Data. Furthermore you can embedd or extract ZUGFeRD XML Data from any PDF. PDFs are automatically converted to PDF/A.
ZUGFeRD XML Files can be directly converted to ZUGFeRD compliant PDF/A files.
Incl. PAdES Signature API...