This weekend I was working on a project which needed a programatically-generated PDF file to be many-slides-per-page - and for this I adopted a tool I haven't used before: pdfjam (installed straight from apt on Ubuntu).
In fact it was pretty easy to get going with it: to print my existing PDFs at 4-per-page, I used this command:
pdfjam --landscape --nup 2x2 --a4paper -q slides.pdf -o handout.pdf
The slides themselves were already landscape so I specified the target document should also be landscape. The
--nup 2x2 is the magic that prints many slides per page, and it seems like it can do various nice tricks with handouts. Running through the other arguments that I used:
--a4paper for the paper size,
-q to stop it from chattering (which it does by default, even when everything worked),
slides.pdf was my input file and
-o handout.pdf the target file to put the new layout into.
Until now I've mostly worked with pdftk for everything, but I couldn't find a way to do this using it. Pdfjam is now a welcome addition to my PDF toolchain, so I thought I'd share.