Problem

You find yourself in need of pdfjam on macOS

Solution

Here are the instructions to achieve a lightweight install of pdfjam on macOS

brew install basictex

After installing basictex, you need to add pdfjam to your PATH:

export PATH="/Library/TeX/texbin:$PATH"

next use TeX Live Manager to install pdfjam

sudo tlmgr install pdfjam

confirm with

pdfjam --version

That’s it