Can Leak Detector check text I copied from a pirated book?

Mike

Mike

Last updated on Nov 2, 2026

Yes. If you can read the pirated book online but can't download the file, or the file won't open, you can paste text from it instead.

Check pasted text

  1. Open the pirated copy and select at least 200 words, about a page. Copy it as it is, without retyping anything.
  2. Open Leak Detector from the sidebar.
  3. Click the Paste some text tab.
  4. Paste the text into Text copied from the book.

Pasting starts the check straight away. If you type or edit in the box instead, the check runs once you pause.

The word count under the box shows how many words you have and how many more are needed. Text from a PDF page works too.

Why copying matters

The marks in a book's text are invisible characters that come along when you copy and paste. Retyped text, text from a scan or photo, or text that has been cleaned up carries none of them, so it can't be traced.

Limits

  • At least 200 words. With fewer you'll see Paste at least 200 words (about a page) so there is enough to read.
  • Don't paste a whole book. Very long text gets That is a lot of text. Paste a few pages, not the whole book.

EPUB copies carry these text marks most reliably. Copies made before hidden marks were added only carry the visible stamp with the reader's name.