Crop PDF border and add page numbers

# Crop left border and a little top border :
pdfcrop --margins "-45 -10 0 0" FILE.pdf OUTPUT.pdf

# Add page numbers :
pspdftool 'number(start=1, size=6, x=305 pt, y=10 pt)' FILE.pdf OUTPUT.pdf

# If pspdftool make a xreftable error, then fix the problem with :
pdftk FILE.pdf output OUTPUT.pdf