This video shows us a tool that can be used to split and merge pdf files without having to buy any software.
If you work with lots of lengthy pdf files that are often much longer than you need, there is a program called ArduoPdfMerger that will make your pdf files easier to handle. You can download it at www.arduosoft.com. This program is designed to not only merge multiple pdf‚Äôs into one document, but you can also use it to split a single pdf into multiple files. In addition, you can change the order of the pages any way that you want.