PDF Mix Tool is an open-source and lightweight application allows to split, merge, rotate and mix PDF files.

The software is written in C++ and depends only on Qt 5 and PoDoFo.

The software offers official snap (containerised software package) package, so it can be easily installed from Ubuntu Software:

You can also run command in terminal instead to install the snap package:

snap install pdfmixtool

For Ubuntu 16.04, install snapd daemon if previous command does not work.

sudo apt install snapd snapd-xdg-open