Junko - Free PDF Splite or Merge tool for windows

Junko is a free tool that lets you split PDF files into separate documents by page range or number or combine many PDFs into larger files. By splitting large PDFs into multiple smaller files, you can work on just the pages or sections you need, and they're easier for small apps to handle. Combining multiple PDFs is useful for creating manuals and other multi page documents.

Some users may need to install GhostScript or compatible version of the Microsoft .NET Framework, but the Junko site can check your system automatically to display PDF document correctly in  Junko Viewer