Plan the book and its chapters
An EPUB is a set of chapters tied together by a table of contents. Decide how to divide your text first: each chapter gets its own title and becomes an entry readers can jump to from the contents.
You can add chapters one at a time and reorder them, or paste a whole document and split it automatically — by Markdown headings, by lines that start with "Chapter", or by separator lines such as ---. Set the book title, author, and language so readers and assistive tools handle it correctly.
- Give each chapter a clear title
- Reorder chapters with the up and down controls
- Set the language, for example en, ko, or ja
Format the text and add a cover
Separate paragraphs with blank lines so they render cleanly. If you want headings, bold, italics, lists, quotes, or links inside a chapter, turn on Markdown formatting and write that chapter in Markdown.
Add a cover image (JPEG, PNG, GIF, or WebP) to give the book a cover that shows on the shelf in ebook apps. You can also load each chapter's text from a file, and the source encoding is detected automatically.
- Use blank lines between paragraphs
- Turn on Markdown for headings and lists
- Add a cover image for a finished look
Download and test the ebook
When you download, the tool builds a valid EPUB with one file per chapter and a linked table of contents, so any reader can navigate it. Open the finished file in your reader or device to check chapter breaks, the cover, and formatting.
If the ebook is for public sharing, proofread the text and confirm you have the right to distribute the content.