konik-io / konik

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

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.

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.