Pageseal

Guide

How to sell a PDF with a watermark

A watermark on a PDF only helps if it names the buyer. This guide shows how a personal watermark works, what it should contain and how your shop adds it to every order automatically.

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Short answer: Let your shop create a new copy of the PDF for every order, with the buyer’s name and order number on a note page or in a footer line, plus a hidden mark. Pageseal does this in Shopify on every plan, without changing your pages.

One watermark for everyone or one per buyer?

A logo or “sample” stamp is the same in every copy, so a shared file says nothing about who shared it. A personal watermark is made at the moment of the sale and names that buyer, which is why few buyers share it and why a found copy leads back to its order.

What should the watermark contain?

  • The buyer’s name and the order number, for example “This copy was made for Alex Sample · Order #1001”.
  • A calm place: a note page after the cover or at the end, or a small footer line on the pages.
  • A second, invisible mark, so the copy stays traceable when someone deletes the note page.
  • No change to your layout: fonts, images, links and the table of contents stay as they are.

How Pageseal marks a PDF

Pageseal adds a note page (after the cover or at the end) and, if you like, a footer line on every page except the cover. The copy ID also sits invisibly in several places of the file, so removing one is not enough. Your original page content is not rewritten, and pages without the note look exactly like your file. Password-protected PDFs are flagged during the upload check, because a personal copy needs the open file.

Set it up in Shopify

  1. Install PagesealFrom the Shopify App Store (in final testing, early access by email).
  2. Upload the PDFAdd EPUB and audiobook files to the same book if you sell them, too.
  3. Choose the noteNote page at the front or end, footer line on or off.
  4. Assign the productEvery order gets its personal PDF on the thank-you page and by email.

Costs: free for the first 5 copies, then $0.75 each, or $15 a month with 40 copies included (all plans). How other apps stamp PDFs: comparisons.

Questions

Asked often.

Can buyers remove the watermark?

A note page can be deleted. The invisible copy ID stays in several places of the file, so the leak search still finds the order.

Does the watermark change my PDF layout?

No. Pageseal draws the note on top of your pages instead of rewriting them; pages without the note look like your original.

Can I watermark a password-protected PDF?

No. Export the PDF again without protection; the upload check shows which file needs it.

Does it also work for EPUB and audiobooks?

Yes. One book can hold EPUB, PDF and audiobook files, and every format becomes a personal copy.

Read next

Sell your next eBook as a personal copy.

Pageseal is in final testing for the Shopify App Store. Write to us and you are among the first.

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