Most of the times when I had to split or merge a couple of PDF documents I had to use command line tools, which was kind of boring, since it isn’t a tool that I use often so what used to happend was that I always forgot the syntax usage.
Today was one of those times that I needed to merge two PDF documents so I’ve looked around and found PDF-Shuffler which is a small python-gtk application, which helps you to merge or split PDF documents and rotate, crop and rearrange their pages using an interactive and intuitive GUI. It is a frontend for python-pyPdf.
You only need to import your PDF documents, the documents pages will appear on the main screen, then you are able to rearrange it’s order by dragging them with your mouse, or delete the ones you don’t need.
You can also watch the video below which is self-explanatory.