Convert EPUB to Markdown
Drop in an EPUB e-book and get clean Markdown back in a few seconds. The chapters, headings and text come through ready to paste into ChatGPT, Claude, or any AI tool, or to feed your RAG pipeline. It runs in your browser, so the file stays on your device.
How to convert EPUB to Markdown
- 1
Add your e-book
Drag an .epub file onto the box above, or click to pick one from your computer.
- 2
Let it convert
The tool reads the chapters in your browser and rewrites them as Markdown. A full book finishes in a few seconds.
- 3
Copy or download
Copy the Markdown with one click, or save a .md file, then paste it into ChatGPT, Claude, or any AI tool.
Why convert an e-book before sending it to AI
An EPUB is really a zip of web pages, so every chapter is wrapped in the same HTML tags and styling that bloat any page. An AI reads through all of it and bills you for the markup. Markdown keeps the chapters, headings and prose and drops the wrapper. A book often loses around 35 percent of its token count, so more of it fits in the context window and each query costs less.
DRM-free books only
The tool reads open EPUB files. Books locked with DRM from a store will not open, because the text is encrypted. Cover art and images are left out as well, so you get the writing and the chapter structure, which is what an AI model reads.
EPUB to Markdown questions
Is it free?
Yes. No account, no limits, no cost. Convert as many e-books as you want.
Do my files get uploaded?
No. The conversion runs in your browser, so the file stays on your device and its contents are never sent to a server.
Will DRM-protected books work?
No. A book locked with DRM keeps its text encrypted, so there is nothing to read. Open, DRM-free EPUB files convert fine.
Do chapters stay separate?
Yes. Chapter headings carry over as Markdown headings, so the structure of the book is easy to follow and easy to split for a RAG pipeline.
What about the cover and images?
Pictures and cover art are left out. You get the written content and its headings, which is what an AI model reads.
How big a book can I convert?
Up to 15 MB, which covers most novels and many textbooks. Image-heavy books can be larger, so a lighter copy converts faster.