QUESTION: What is PDF splitting?

ANSWER:  "PDF splitting" is a term that is often used to describe the process of extracting specified pages or page ranges from a PDF file or from a collection of PDF files and, optionally, creating a new PDF file that contains the extracted pages.

PDF splitting

Most of the time, people talk of PDF splitting in the context of a server-based (hands-off) workflow that automatically assembles customized PDF documents that contain pages from pre-existing PDF documents. However, people sometimes want to do non-automated PDF splitting by using desktop software interactively.

Our company offers a programmer's API called XpdfSplice that makes it easy to do PDF splitting.