I only really use LibreOffice to generate PDF's, and usually lock them down
for things like statements of work and such to keep anyone from getting
crafty, easily done there as part of the export process under security.

Another option might be using MasterPDF editor, free version (ie. older
version).  It works great still, not had to lock an existing file before,
but it might.  Normally I use it a lot of attaching a signature to a pdf,
but I don't re-lock it at that point.

-mb


On Fri, Aug 6, 2021 at 7:06 PM joe--- via PLUG-discuss <
plug-discuss@lists.phxlinux.org> wrote:

> How to make a pdf read only?
>
> I'm sure I've done this in the past,
> but can't remember how. Searched the
> net but found no solution.
>
> Do not want to convert to an image
> but just want a read-only pdf.
>
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