Remove password from PDF file with PHP

Question

Once I upload a protected PDF with password through a PHP page, I need to remove the password (stored in hardcoded way) with some PHP function and then save the current unprotected PDF file in the server's filesystem. Do you know any method / library to do it?

Thank you Fabrizio

score 0 · Answer 1 · answered Dec 27 '16 at 12:11

0

Maybe you can use gs to remove password. Try:

exec("gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=unencrypted.pdf -c .setpdfwrite -f encrypted.pdf");

answered Dec 27 '16 at 12:11

Pythagoras

1
3

One question: with your workaround where I need to pass the PDF's password to the script? – Fabrizio A Dec 27 '16 at 14:16
no need to pass password – Pythagoras Dec 27 '16 at 14:36
If I run the command above from inside a PHP script I get this error: **** This file requires a password for access. GPL Ghostscript 9.07: Unrecoverable error, exit code 1 – Fabrizio A Dec 27 '16 at 14:55
Any news???? :) – Fabrizio A Dec 28 '16 at 14:45
By my command you can remove password about print, copy of file... if you don't have passoword for opening you can do nothing. – Pythagoras Dec 29 '16 at 12:26

Remove password from PDF file with PHP

1 Answers1