There can be many reasons why you might want to split a large PDF file. Large files can be difficult to work with if you have to send them to someone via email or you need to work on a specific part of the file.
Often, parts of a document might be confidential, and other parties might not have the clearance to view or work on these parts. Splitting PDF files comes in handy in such cases. With a PDF editor, you can split a file into pages or multiple files as per your requirements.