PDF Splitter and Merger SDK for .NET is a .NET library that gives developers the ability to add PDF functionality to any .NET application. PDF Splitter and Merger SDK is an easy to use API gives you the programmatic, on-the-fly ability to Merge, Append, Split, Join, Combine your PDF files and so much more! PDF Splitter and Merger SDK for .NET is a simple, stand-alone application that lets you combine two or more Acrobat PDF files into a PDF.