Upload your PDF and paste your buyers – or a CSV with e-mail, name and order ID. You get a ZIP with one personalised copy per buyer, stamped on every page.
A stamped PDF can still be forwarded – the stamp only shows who leaked it. With HelpRange buyers read in a protected viewer with their e-mail on every page, there is no file to pass on, and access is revoked on a refund.
Personalised (social DRM) watermarks are how many publishers protect e-books, courses and paid reports: the buyer's own e-mail on every page makes forwarding personal. They do not make copying impossible – they make the source of a leak obvious.
jane@example.com, Jane Doe, 1042 – or upload the CSV export of your shop.A stamped copy is still a file: it can be forwarded, and refunds cannot take it back. With HelpRange buyer access buyers read in a protected viewer with their e-mail on every page, there is no file to pass on, and access ends on a refund.
Yes – no sign-up, PDFs up to 10 MB, up to 50 buyers at a time.
Always the buyer's e-mail; optionally the name, the order ID and today's date – on every page, diagonally and in the footer. Each copy also carries an invisible fingerprint our leak tracer reads back.
No. A stamped file can still be forwarded or uploaded – the stamp identifies whose copy leaked and deters most buyers. To stop sharing, give buyers access instead of a file.
One buyer per row: an e-mail address and optionally a name and an order ID, in any column order, separated by commas or semicolons. A header row is skipped.
No – the PDF and the buyer list are processed in memory and not stored.