I hope all is well,
I have a webpage that has a button and a SharePoint library.
Once the user clicks the download button, the document will be downloaded from SharePoint with a watermark of the user trying to download this file.
Additionally, I need to manage who can access or download the file.
Therefore, the main points to consider are:
User authentication to the SharePoint document library
Pulling the document from the website itself
Watermark feature
Thus, what is the most effective practice to achieve that and what should I use?
Thanks in advance