How to remove a .pdf's document restrictions? [duplicate]
You have two options:
-
with
ghostscript:gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=%stdout% -c .setpdfwrite -f locked.pdf > unlocked.pdf -
with
pdf2psandps2pdf(slower):pdf2ps locked.pdf - | ps2pdf - unlocked.pdfIf the unlocked PDF contains error, try to decompose the commands (ps2pdf have sometimes problems with a streamed input):
pdf2ps locked.pdf unlocked.ps ps2pdf unlocked.ps unlocked.pdf