To convert EPUB to OEB, select or drop your .epub file above, check that OEB is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is an EPUB file?
EPUB – EPUB e-book. EPUB is the open e-book format: the text reflows to fit any screen. Most e-readers except the Kindle, and most reading apps, open it.
EPUB Converter →What is an OEB file?
OEB – OEB e-book (a folder of files, in a ZIP). OEB (Open eBook) is the folder of files, with an OPF package file, that EPUB grew out of. The result comes as a ZIP of that folder.
How to convert EPUB to OEB
- Click Select File, or drop your .epub files anywhere on this page. You can add several at once.
- Check that OEB is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
EPUB vs OEB: how they compare
| EPUB | OEB | |
|---|---|---|
| Layout | Flowing text | Flowing text |
| Editable | With e-book tools | Yes |
| Created by | International Digital Publishing Forum, 2007 | Open eBook Forum, 1999 |
| Best for | E-readers and reading apps | Tools that read the unpacked e-book |
Good to know
- The EPUB e-book is converted by calibre. Copy-protected (DRM) e-books cannot be converted: ConvertKitty does not remove DRM, so use books you have bought without it or that are free of it.
- The OEB e-book is made by calibre from the text, headings and pictures of the EPUB file; a cover is not created.
- An OEB e-book is a folder of files, so it comes back as a ZIP of that folder.
Frequently asked questions
Is converting EPUB to OEB free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my EPUB files uploaded anywhere?
This conversion runs on our server, because reading an EPUB file needs calibre, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the EPUB file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the OEB look the same as the EPUB?
The text, chapters and pictures are kept. The look can differ: OEB readers use their own fonts and page sizes, so page breaks move.
Can I convert several EPUB files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
Convert EPUB to other formats
- EPUB Converter
- EPUB to AZW3 Converter
- EPUB to LRF Converter
- EPUB to MOBI Converter
- EPUB to PDB Converter
- EPUB to PDF Converter
- EPUB to RTF Converter
- EPUB to TXT Converter
Convert other files to OEB
- Convert to OEB
- DOCX to OEB Converter
- PDF to OEB Converter
- MOBI to OEB Converter
- AZW3 to OEB Converter
- ODT to OEB Converter
- RTF to OEB Converter
- TXT to OEB Converter
- HTML to OEB Converter
- CBZ to OEB Converter
- FB2 to OEB Converter
All e-book formats
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