Speed up long-form research and multi-chapter book analysis

Your AI takes in a whole book as one dense, lightweight text stream. Ebook files carry packaging and page styling the model doesn't need. Stripped to Markdown you get the title, author and every chapter under its own heading, ready to question in full instead of relying on someone else's summary.

Convert a EPUB file

Three free, no account, nothing stored.

What you get

Book title, author and other metadata first.
Each chapter under its own heading, in reading order.
Lists, emphasis and links from inside the chapters.

Before you drop it in

A full book is a lot of tokens whichever way you feed it. The meter shows the count before you paste. Consider converting and then taking the chapters you need.
Books bought from most big stores are DRM-locked and won't convert. Your own EPUBs, public-domain books and DRM-free purchases will.

What survives, what doesn't

Chapter headings and body text	✓ Kept
Metadata (title, author)	✓ Kept	At the top of the file.
Lists, bold, italic, links	✓ Kept
Images and covers	✗ Lost	Dropped.
Footnotes	△ Partly	Usually land at the end of their chapter.
DRM-protected books	✗ Lost	Can't be opened. Only DRM-free EPUBs convert.

What it looks like

The opening of a converted book looks like:

# Field Notes on Estimating

**Author:** A. Practitioner
**Language:** en

## 1. Why estimates drift

Every estimate is a forecast made with less information than the person judging it will have later.

Questions about EPUB

Do chapters stay separate?

Yes. Each chapter becomes a heading, in the book's reading order.

Will it convert a book I bought?

Only if it's DRM-free. Most store purchases are locked and can't be opened by any converter.

How many tokens is a book?

Roughly 100,000 to 150,000 for a typical non-fiction title. The meter tells you exactly for yours.

Other files we convert

PDF to Markdown Word (DOCX) to Markdown PowerPoint (PPTX) to Markdown Excel (XLSX) to Markdown HTML to Markdown CSV to Markdown JSON to Markdown XML to Markdown

Drop your EPUB file and see what it really costs your AI.

Three free conversions. No account. Nothing stored.

Convert a EPUB file