Stop Your Course or E-Book From Being Shared for Free

You sell a course PDF or an e-book. It works — until one buyer uploads it to a free-sharing group and your sales drop. Every copy looks the same, so you can't tell whose copy leaked, and you can't do anything about it.

Why plain files leak easily

A normal PDF is simple to copy and share. There is nothing in it that says who bought it. A buyer feels safe sharing it because the file can't point back to them. Once it's out, it spreads.

What a per-buyer watermark changes

Marking each copy with the buyer's details changes the math. Now every file is a little different, and tied to one person. That does two things:

• It discourages sharing — people are far less likely to upload a file that has their own name or email in it.
• It shows the source — if a copy does leak, the mark tells you which buyer it came from.

You can use a visible note, a grid that makes screenshots messy, an invisible mark, or a stamp.

Mark every copy you sell

Orilami's Course & E-Book Watermarker adds a per-buyer watermark to course PDFs and e-books — visible text, an anti-screenshot grid, an invisible forensic mark, or a stamp — and exports up to 50 copies as a ZIP. It runs in your browser, so your paid content is never uploaded.

Who needs this

This is for people who sell what they write or teach: course creators, authors, coaches and training companies. Their file is the product, so tying each copy to its buyer protects both their income and their work.

You can't make a file impossible to copy. You can make every copy point back to the person who shared it.