PDFsharp is the Open Source library for creating and modifying PDF documents using .NET. It has an easy-to-use API that allows developers to generate or modify PDF files programmatically. PDFsharp can be used for various applications, including creating reports, invoices, and other types of documents. This package relies on Windows Presentation Foundation (WPF) and can be used under Windows only. See https://docs.pdfsharp.net for details.