hi, what is PDF copy protected??
Does it mean anyone else cannot select and copy and paste?
Yes, I know all OUTPUT can be copied, or regenerated..
I only want to add difficulties.
How to do that? How to add password and/or copy-protected to PDF file? Is it usually done free or paid?
Does it mean anyone else cannot select and copy and paste?
Yes, I know all OUTPUT can be copied, or regenerated..
I only want to add difficulties.
How to do that? How to add password and/or copy-protected to PDF file? Is it usually done free or paid?