I am sorry to hear you are experiencing issues because of a currently not supported by the PdfProcessing library functionality. We already have an item logged in our backlog to provide such support (Provide API for setting different permissions when exporting encrypted PDF document) so I will mark this one as a duplicate. You can cast your vote for the implementation as well as subscribe to the task by clicking the Follow button so you can receive updates when its status changes.
Regards,
Martin
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Hiep
Posted on:06 Jan 2021 09:08
FYI these are the restrictions i want to modify in PDF with Telerik