image.png (86.6 KB)
Thank you for posting the query.
It looks like Aspose.Slides does not provide a feature to modify the description properties of PDF output files. I logged the issue with ID SLIDESJAVA-38666 in our tracking system. Our development team will consider implementing this feature. You will be notified when this capability is added.
Please take a look at Aspose.PDF product for your purposes.
Could you please clarify why you want to change these particular properties?
Because the tag indicates which api we use to product pdf！
Thank you for the additional information. I have passed it to our development team.