PDF Watermark and Encryption
I
Igor Zuev
It would be great if you could implement watermarking and encryption protection for PDF downloads. This would allow us to sell our PDF eBooks and prevent piracy. The use case is as follows: we upload our PDF eBook in WP and setup a paid digital download using FormNX with a mandatory email capture. Once the email is entered and the Download button is pressed, a watermark with the user's email address and/or encryption using the user's name as a password should be applied to the PDF before it is released for download.
A while ago, I came across a one-person-developed WordPress plugin that allows the sale of eBooks with watermarking and encryption. It would be great if you could test it to understand its capabilities and implement something similar into your product.
Implementing this watermarking and encryption feature would convince many eBook sellers to build their own eBook stores using FormNX instead of Amazon Kindle, as many authors are concerned about the piracy of their PDF books.