Documents / Conversion
EPUB Converter: Text, Markdown and HTML
Extract a book's chapters as plain text, Markdown or HTML. Create an EPUB from text or Markdown with a title, author, language and optional cover.
EPUB Converter: Text, Markdown and HTML: Turn an EPUB into plain text, Markdown or a single HTML file with its images, in reading order with the chapter headings kept. Or go the other way: paste or load text or Markdown, add a title, author, language and cover, and get a standard EPUB 3 e-book with a table of contents, split into chapters at your headings. Runs 100% locally in your browser with zero server file uploads.
- Category
- PDF tools
- Runs
- In your browser
- Cost
- Free · no sign-up
- Availability
- Ready to use
Runs entirely in your browser
Files never leave your browser. Encrypted books cannot be converted.
EPUB 3.3
The W3C EPUB 3.3 Recommendation defines the metadata, navigation, chapter documents and container used by a book. https://www.w3.org/TR/epub-33/
Reading compatibility
The EPUB Reading Systems 3.3 specification provides the reading-system requirements. A converted book may look different between readers, especially when the original used complex page layouts. https://www.w3.org/TR/epub-rs-33/
How to use it
- Choose whether to convert an EPUB or create a new book.
- Open the book, or add your text and book details, then review the chapter list.
- Choose an output format and download the converted file.
Privacy & limitations
All conversion happens in your browser. Files and book text are never uploaded.
Related tools
Frequently asked questions
How are chapters chosen?
Markdown splits at # and ## headings outside fenced code. Plain text splits at Chapter N lines or two consecutive blank lines. The chapter list is shown before you download.
What happens to images?
Images in an EPUB become embedded pictures in single-file HTML, or image files alongside Markdown and ZIP exports. Single-file HTML is limited to 50 MB. When creating a book, you can add a PNG or JPEG cover; Markdown image references become their alt text.
Can I convert DRM-protected books?
No. Books with encrypted content are rejected. Recognised font obfuscation does not block text extraction, but those fonts are not included in the output.
What details does a new book need?
Enter a title, author and language, then add text. An optional cover must be PNG or JPEG and no larger than 10 MB. Raw HTML in Markdown is displayed as text.
Free tool · runs in your browser · no account required