I was reading this on the net, (abut 80% down the page), someone suggested to use pdfcrop with --xetex so that the generated pdf is smaller than the default.
When I tried this option, on Linux with TL 2015, I found the cropped pdf file was all blank! Everything in it was deleted.
This is what I typed:
The new 4.pdf file is blank, here is before and after:
Here is link to 4_before.pdf before the crop. Here is link to 4_after.pdf after the crop. if someone likes to reproduce this.
Did I do something wrong? Why new pdf file is blank?
if I do not use --xetex then then the new pdf is not blank. (it is not cropped for some reason, and I am still trying to find out why, but at least it is not blank!).