Working through a book-length document

A four-hundred-page book processed as one project produces a claim list nobody can use. Textbook mode divides the document along its own structure first, so each chapter becomes a unit with its own summary, claims, flashcards and quiz, and the whole book becomes a sequence rather than a wall.

• EPUB, PDF, Word and PowerPoint files, parsed in this browser.
• Plain text and Markdown, including exported notes.
• Existing chapter markings where the file provides them, and detected headings where it does not.

Each chapter behaves like any other project: a guided lesson, flashcards with local spaced repetition, a quiz built only from supported claims, and an evidence view that points at the exact passage. Progress is per chapter, so stopping halfway through a book loses nothing.

Parsing happens on your device, which means a very large file competes with everything else the browser is doing. If a document stalls, close other tabs and try again, or split the file and import the parts. The size limit you will hit first is your own device's memory, not a server quota.