I have installed PdfShuffler on Ubuntu 16.04 LTS (then with unity desktop) and got a very basic interface with
file : add, save as, quit
edit : rotate left, rotate right, crop, delete
view : zoom in, zoom out
help : about
I find the project smart and would like to exploit it, but it seems that I cannot merge several .pdf documents within a single file (and also the rotated thumbnails do not hold as such). Is there any way to do this ? (possibly with PDF-Shuffler), Thanks.