How to crop PDF margins using pdftk and /MediaBox

Question

I used pdftk to uncompress a PDF and then opened it as a text file.
I want to edit the /MediaBox field, which is in my case

/Me         


        

Answer 1

use sed to replace any occurrence

sed 's/MediaBox \[0 0 612 792*/MediaBox \[100 0 512 792]/g'out.pdf

or podofobox (inside podofo utils)

• http://podofo.sourceforge.net/tools.html

without needing to uncompress pdf streams first (as needed with pdftk)

podofobox in.pdf out.pdf media 10000 0 51200 79200

as you can see, podofobox uses MediaBox values multiplied by 100, since its scale is a sub multiple, so, you need simply to add two zeroes (00) to values you can read in MediaBox field