On the Pro plan, Fulfile can stamp each page of a PDF with the buyer's name, email, and order number at download time. A leaked file traces straight back to its source, which is a strong deterrent against resharing.
- Turn it on per product: Delivery settings, then Watermark PDFs with purchaser details.
- Stamping happens at download time, so it applies to every future download automatically.
- Only PDFs are stamped; other file types are delivered untouched.
- PDFs up to 25 MB are stamped; larger PDFs are delivered unstamped so delivery never fails.
Watermarking pairs naturally with per-file limits: together they are the strongest anti-redistribution setup available in a Shopify delivery app.
Still stuck?
Email support@fulfile.app. It goes straight to the founder, and replies usually land the same day.