EPUB Editor

How to use the EPUB editor

1. Open your EPUB. Drop the file on the box or click to choose it. It opens in your browser, up to 100 MB, and nothing is uploaded.
2. Make your changes. Each tab handles one job: Details (title, authors, description), Cover, Chapters, Text, Find and replace, and Contents (the table of contents). Save each change as you go.
3. Preview it. See any chapter at phone, tablet or desktop width, with a text size slider.
4. Check and download. The editor runs our EPUB checker on the edited file, shows how many issues it had before and has now, and lets you download it as a new file ending in -edited.epub.

Use it only on books you own or have the right to edit. Keep your original file until you’ve checked the new one.

What you can change in an EPUB

An EPUB is a ZIP archive of web pages, images and a few small files that describe the book. The editor changes those files for you, and leaves every file you don’t touch exactly as it was.

• Details. Title, authors and their roles (author, editor, illustrator, translator), language, publisher, date, description, subjects and, in EPUB 3, the series and its number. Details the editor doesn’t show are kept.
• Cover. Swap the cover image for a JPEG or PNG. The editor shows its size against each store’s rules, using the same checks as our ebook cover size guide. If the image type changes, the file name and every link to it are updated.
• Chapters. Reorder, rename, delete or add a blank chapter. Deleting a chapter offers to remove images and files nothing else uses.
• Text. Edit a chapter visually, with bold, italic, headings, lists and links, or as source XHTML. Classes, ids and EPUB types are kept, and anything pasted in is cleaned of scripts and files from the internet.
• Find and replace. Across the whole book, with match case and whole word options, a list of every match first, and an undo. It changes text only, never tags or attributes.
• Table of contents. Edit, reorder and nest entries, or rebuild it from your chapter headings. The EPUB 3 navigation document and the older NCX are kept in step.

Fixed-layout EPUBs, like picture books and comics, can have their details and cover edited, but not their text. To turn a Word, PDF or Markdown file into an EPUB, use the Word to EPUB, PDF to EPUB or Markdown to EPUB converters instead.

Check your EPUB before you publish

Before the download, the editor checks the edited file for the problems stores reject EPUBs for most often: the mimetype file, the package and its required details, missing or unlisted files, the table of contents, broken links and markup errors. It writes the file the way stores expect, with the mimetype entry first and uncompressed. Warnings never block the download.

That check isn’t a full validation. Before you upload, run EPUBCheck, the official validator, and open the book in Kindle Previewer if you publish on Amazon. Each store has its own rules:

• Amazon KDP asks for EPUB, DOCX or KPF files for reflowable ebooks. See how to publish an ebook on Amazon KDP.
• Apple Books supports EPUB 3.3 and earlier EPUB 3 files. See how to publish a book on Apple Books.
• Google Play Books accepts EPUB 3.3, EPUB 3 and EPUB 2, prefers 3.3 and doesn’t run JavaScript. See how to publish a book on Google Play Books.

Not sure whether to send an EPUB or a PDF? Read PDF vs EPUB. Need a new cover first? Try the AI ebook cover generator.