Document Permissions

[claudinecombe]

Hello,

I am trying to set the document permissions at saving. I have found the different macro here.

I would like to enable printing with PDF_PERM_PRINT but prevent text selection (PDF_PERM_COPY) or document modification (PDF_PERM_MODIFY)

Thank you for your help 🙏

[JorjMcKie]

"Permisions" is an integer representing a bit field. You should start with a bit that always must be on, PDF_PERM_ACCESSIBILITY and then add more permissions via the "|" operator:

perm = fitz.PDF_PERM_ACCESSIBILITY | fitz.PDF_PERM_PRINT | fitz.PDF_PERM_PRINT_HQ
doc.save(.., permissions=perm)

This leaves the other 5 possible permission bits off.

[claudinecombe]

Hi Jorj, thank you for your answer !

I did the above but I am still able to select text, I am wondering if this is happening since the new release of Adobe Acrobat Reader.

Some time ago when I implemented it like the above I think it prevented from selecting text, but it does not anymore.

[JorjMcKie]

The situation is a bit ambiguous - I am sure you are aware.
First of all I forgot to mention that the save must include encrypting the file (with an owner pw and no user pw).
Then accessing the properties with e.g. Foxit Reader shows this:

In my Adobe Acrobat and Foxit, I can still mark text on the page and press the -copy key, but nothing in effect will be copied.
So a PDF viewer must be so kind and comply: my SumatraPDF for example still copies stuff!

[claudinecombe]

You are right, I can select text but no copy is made in Acrobat Reader, thank you ! 🙏

[SauravBhandari93]

Thank you for your help! Just a quick reminder:

↣The User Password is used to open the PDF.
↣The Owner Password is used to set permissions, such as editing, printing, and copying.
To apply proper restrictions on the encrypted file, both passwords should be different.