Secure Watermarked Document Streaming

I already run a SaaS application that lets me send files with revocable access, but the moment a recipient hits “download” all practical control disappears. I now want the experience to be view-only: the... (Budget: $250 - $750 AUD, Jobs: Backend Development, CSS, Frontend Development, Full Stack Development, JavaScript, Next.js, PDF, SaaS, Web Development, Web Security)