Install pdfshuffler by entering the following commands in the terminal:
sudo apt update sudo apt install pdfshuffler
Description:
merge, split and re-arrange pages from PDF documents
PDF-Shuffler is a small application which allows one to merge or split pdf documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface.
Homepage: http://sourceforge.net/projects/pdfshuffler/
Version: 0.6.0-8
Section: universe/x11