Convert Documents to OEB eBook Online — Free OEB Converter
Use this free online converter to transform documents and eBooks into OEB (Open eBook) format instantly — no software to install, no account required, and your files are deleted automatically after conversion.
What is OEB?
OEB, short for Open eBook, is an early open eBook standard developed by the Open eBook Forum (now the International Digital Publishing Forum, IDPF). First published in 1999, OEB defined a package-based format using XHTML and CSS to describe the structure, content, and presentation of digital books. It served as the direct predecessor to the widely adopted EPUB standard — much of EPUB’s architecture was built upon OEB foundations.
An OEB publication consists of a manifest, a spine (reading order), and metadata, all bundled with the actual content files. While OEB itself is largely superseded today, it remains relevant for archival workflows, legacy reading systems, and any pipeline that needs to target older eBook software.
Why convert to OEB?
There are several practical reasons to produce an OEB file from your source documents:
- Legacy compatibility: Some older eBook readers and publishing pipelines still accept or require OEB input rather than newer EPUB or MOBI formats.
- Archival and preservation: OEB’s open, XML-based structure makes it a transparent, text-friendly format suitable for long-term digital archiving.
- Publishing workflows: Certain eBook production tools and content management systems use OEB as an intermediate stage before generating consumer formats.
- Format research: Developers and researchers studying the history of digital publishing standards often need to inspect or create OEB files.
Supported input formats
This converter accepts a broad range of source documents, including common word-processing formats such as DOC, DOCX, ODT and RTF, document formats like PDF and HTML, as well as established eBook formats including EPUB, MOBI, FB2, LIT and others. Upload your file, select OEB as the output, and download the converted result.
Frequently asked questions
Is this OEB converter free to use?
Yes, the converter is completely free. There are no subscription fees or hidden costs, and you do not need to create an account to convert files.
What happens to my uploaded files after conversion?
Uploaded files and converted outputs are processed on the server and then deleted automatically. They are not stored, shared, or used for any other purpose.
Which file formats can I convert to OEB?
You can convert from a wide range of document and eBook formats, including DOC, DOCX, ODT, RTF, PDF, HTML, EPUB, MOBI, FB2, LIT, and more. Upload your file to see if your specific format is supported.
Is OEB the same as EPUB?
They are closely related but not identical. OEB (Open eBook) is the earlier standard from 1999 that directly influenced the EPUB specification. EPUB 2 and EPUB 3 are the modern successors and are far more widely supported by current reading devices and apps.
Do I need to install any software to convert to OEB?
No installation is needed. The entire conversion runs in your browser via the online tool — just upload your file, choose OEB as the output format, and download the result.