If you're working with several PDF documents and each one is protected with a different password, it can be pretty annoying to always enter the passwords.
Do you need to copy something from a PDF document, but it's copy-protected?
With this few simple steps you can get rid of these problems.
The process is pretty simple, all you'll need is terminal and these two utilities: pdftops, ps2pdf.
The command pdftops -upw <password> <file>.pdf will generate postscript file from the PDF and
the command ps2pdf <file>.ps converts the postscript back to PDF, but without password and copy protection.
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