The Ebook Watermarking API
The Ebook Watermarking API
LemonInk is the go-to solution when you need to integrate EPUB, MOBI and PDF ebook watermarking into you web store.
If you have a web store and wish to sell watermarked ebooks, LemonInk is the perfect solution for you.
Our RESTful JSON API is robust and easy to understand. We follow industry standards, so you'll have no trouble integrating it with any ecommerce solution.
Checkout our PHP client library as well as docs for the API itself. And did you know there was a WooCommerce plugin?
How does ebook watermarking work?
LemonInk is a cloud service used to secure digital books from piracy. It applies a digital watermark to each purchased ebook making it unique and traceable.
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After each purchase LemonInk will create watermarked versions of your ebooks and attach them to the user’s order allowing them to easily download their individual copies.
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Each file is digitally marked both visibly (by adding the purchaser's email address to its content) and invisibly (by embedding a series of obfuscated markers into an ebook's code).
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This technique discourages users from publishing the files on the internet and allows you to track down those who’ve published them nevertheless.
How does Readium LCP work?
Readium LCP is an open DRM standard. Instead of marking the files, LemonInk encrypts them and issues each buyer a personal licence to open them.
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After each purchase LemonInk encrypts your ebook and issues a personal licence for the buyer, attached to their order just like a watermarked copy would be.
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The buyer opens the book in any LCP-compatible reading app or e-reader using a passphrase we show them at download time. One passphrase unlocks every book they ever buy from you.
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The licence enforces your rules. It can expire on a chosen date, which makes lending and subscription models possible. And we're working on adding copy and printing limits support in the near future.