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A library to create, read and validate ZUGFeRD compliant invoices. Available for Java and .NET

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Konik ZUGFeRD Library

Note This project reached its EOL. The Konik e-invoicing library was/is used by many ERP and DMS systems, at it high more than 100k companies used Konik.

Join the chat at https://gitter.im/konik-io/konik

Is an easy to use open source implementation of the ZUGFeRD data model including various enhancements.

Features

  • Easy and understandable API to create and read ZUGFeRD compliant invoices.
  • Extensive documentation with examples. See konik.io/docs
  • XML schema and semantic invoice validation.
  • Validation of invoices against ZUGFeRD profiles.
  • Validation of invoices against specific country invoice regulations.
  • Attaching or extracting XMLs from PDFs.
  • Multiple PDF Carriages from different vendors (Currently iText and PDFBox). Choose your favorite or use any other of your choice.

Modules

Quick overview of the different modules.

  • konik Contains the ZUGFeRD data model.
  • harness API connecting the Konik library to a PDF-Carriage.
  • itext-carriage The PDF provider iText which can be used together with the Konik library.
  • pdfbox-carriage The PDF provider which can be used together with the Konik library.
  • distribution Zip distribution package. For those who are not using maven.
  • project content related to the project like Scripts, Formatting rules, dictionary. (Not a Maven module).

Documentation

http://konik.io/docs

License

All code is licensed under the AGPL, v3 or later.

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A library to create, read and validate ZUGFeRD compliant invoices. Available for Java and .NET

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