pdfcpu

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A PDF processor written in Go.

View the Project on GitHub pdfcpu/pdfcpu


Changelog

Decrypt

This command decrypts inFile and removes password protection. If provided the decrypted PDF will be written to outFile and ìnFile remains untouched. Have a look at some examples.

Usage

usage: pdfcpu decrypt [-v(erbose)|vv] [-q(uiet)] [-upw userpw] [-opw ownerpw] inFile [outFile]


Flags

name description required
verbose turn on logging no
vv verbose logging no
quiet quiet mode no
upw user password no
opw owner password no


Arguments

name description required
inFile encrypted PDF input file yes
outFile PDF output file no


Matrix

The following matrix is a result of the intrinsics of how PDF encryption works:

encrypted using needed for decryption use case
opw - reset permissions
upw upw remove open doc password & reset permissions
opw and upw opw or upw remove open doc password & reset permissions


Examples

Decrypt a file that has only the owner password set. This will also reset all permissions, providing full access. You don’t need to provide any password:

pdfcpu encrypt -opw opw test.pdf
writing test.pdf ...

pdfcpu decrypt test.pdf 
writing test.pdf ...


Decrypt a file that has only the user password set. This will remove the open doc password and also reset all permissions, providing full access. You need to provide the user password:

pdfcpu encrypt -upw upw test.pdf
writing test.pdf ...

pdfcpu decrypt test.pdf
Please provide the correct password

pdfcpu decrypt -upw upw test.pdf 
writing test.pdf ...


Decrypt a file that is protected by both the user password and the owner password. This also removes the open doc password and resets all permissions providing full access. You will need to provide either of the two passwords:

pdfcpu encrypt -opw opw -upw upw test.pdf
writing test.pdf ...

pdfcpu decrypt test.pdf
Please provide the correct password

pdfcpu decrypt -upw upw test.pdf 
writing test.pdf ...
pdfcpu encrypt -opw opw -upw upw test.pdf
writing test.pdf ...

pdfcpu decrypt test.pdf
Please provide the correct password

pdfcpu decrypt -opw opw test.pdf 
writing test.pdf ...