pdflock - Password protect PDF files

Given an input PDF file, output a password protected version.

Running

Running this is as simple as:

python3 pdflock.py input.pdf output.pdf

To set the password non-interactively, run:

pdflock.py input.pdf output.pdf --password="my secret"

Generating Commands from a Spreadsheet

You can generate commands via a spreadsheet to easily batch password protect PDF documents with different passwords. Assuming that the columns A-C correspond to Password, Input File and Output File. Simply, use the following formula on row 2:

="python3 pdflock.py " &  B2 & " " & C2 & " --password="""& A2 &""""

Installation and Dependencies

This program requires python3 and the pyPdf2 module to be installed.

On a Mac, you can install this with:

brew install python@3
pip3 install pyPdf2

Licensing

It is released under the GNU GPL version 2 license