Split an EPUB into parts

Break a long book into separate files — one per chapter, or in groups.

How to split an EPUB into parts

  1. 01
    Choose your EPUB
    Drop the file above or tap to pick one from your device.
  2. 02
    Choose how to divide it
    One chapter per file, or larger groups for a long book.
  3. 03
    Download the ZIP
    Each part is a complete, valid EPUB in its own right.

Questions

Why do I get a ZIP?

Splitting produces several files, and a browser can only hand you one download. Unzip it to get the individual EPUBs.

Is each part a real EPUB?

Yes — each one has its own metadata, navigation and table of contents.

How are chapters counted?

By the book’s own spine, which is the reading order its author defined.

Are my files private?

This tool runs entirely inside your browser — your file is never uploaded anywhere. It stays on your device, and closing the tab is all it takes to remove it.

Is it really free?

Yes. Every tool, every file size, no account. There is no paid tier and nothing is held back.