Split EPUB by Chapters
Split any EPUB into individual chapters or a custom range — each piece is a valid EPUB. Download one at a time or as a ZIP. Free, no signup, no Calibre needed.
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Frequently asked questions
- How does EPUB splitting work?
- The splitter extracts each spine item (chapter) from your EPUB into a separate, valid EPUB file. You can download them individually or as a ZIP.
- Can I split specific chapters only?
- Yes. You can set a chapter range (from/to) to split only specific chapters. Leave the fields empty to split all chapters.
- Does splitting preserve the original formatting?
- Yes. Each split chapter retains its original CSS, images, and formatting.
How EPUB splitting actually works
An EPUB's reading order is defined by its spine — the ordered list of chapter documents inside the archive. The splitter reads the spine, shows you the chapters, and builds a new, valid EPUB for each one (or for the range you select). Each output keeps its own packaging, table of contents, and — if you leave "keep metadata" on — the original title, author, and cover metadata, so the pieces import cleanly into Calibre, Kindle, Kobo, and Apple Books. You can download chapters one at a time or grab everything as a single ZIP. If a piece needs checking afterwards, run it through the EPUB validator; to recombine pieces later, use the EPUB merger.
Splitting an omnibus into separate books
The most common reason to split: an omnibus or box-set EPUB that your e-reader treats as one enormous book — progress percentages become useless and the library shows one entry instead of three. Use the chapter range selector to mark where each book starts and ends, and export each range as its own EPUB. The same approach works for splitting a large EPUB in half to get under a device or email size limit (though if size is the only problem, compressing the EPUB usually solves it without splitting). One caveat that applies to every splitter, including this one: DRM-protected files can't be split — the chapters inside are encrypted. That's a publisher restriction, not a format one.
EpubSplit (the Calibre plugin) vs a browser splitter
If you already live in Calibre, JimmXinu's EpubSplit plugin is a solid tool — it splits on internal anchor points and integrates with your library. The trade-off is setup: you need Calibre installed, the plugin added, and a restart before the first split. A browser splitter is the faster path when you're on a machine without Calibre (work laptop, Chromebook, tablet), when you have one file to split rather than a library workflow, or when you want each chapter as a separate file in one pass — EpubSplit produces one new EPUB per run, so carving an omnibus into many books means repeating the process for each piece. Both produce valid EPUBs; pick whichever fits where you are.