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OTT to OEB Converter

Convert OTT to OEB online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an OTT file?

An OTT (OpenDocument Text Template) file is a standardized document template defined by the OASIS Open Document Format for Office Applications (ODF) specification (ISO/IEC 26300). Based on XML syntax and encapsulated within a ZIP-compressed container, the format stores styling definitions, page layouts, and manifest files separate from content, allowing users to generate multiple .ODT files with consistent formatting. It supports lossless compression and interoperability across open-source office suites.

How to open an OTT file

Native support is built into ODF-compliant word processors such as LibreOffice Writer and Apache OpenOffice. Microsoft Word opens OTT files via integrated ODF conversion filters. Because the file functions as a template, opening it typically instantiates a new, untitled document (.odt) rather than editing the template file itself, unless specifically opened for editing via the application's file menu.

OTT Technical Info

Full Name
OpenDocument Text Template
Developed By
OASIS (Organization for the Advancement of Structured Information Standards)
Initial Release
2005
MIME Type
application/vnd.oasis.opendocument.text-template

What is an OEB file?

The Open eBook (OEB) format, formally defined by the Open eBook Publication Structure (OEBPS) specification, is a legacy XML-based standard developed by the Open eBook Forum (now IDPF) in 1999. It acts as a manifest file (typically with an .opf extension) that references a package of HTML or XHTML content, CSS stylesheets, and Dublin Core metadata. As the immediate predecessor to the modern EPUB standard, OEB established the structural protocols for separating content from presentation in digital publishing.

How to open an OEB file

OEB files are not natively executable on standard operating systems. To view the content properly assembled, users must utilize dedicated eBook software such as Calibre, which parses the OEBPS manifest to display the book. While the underlying XML and HTML components can be viewed in standard text editors like Notepad++ or Visual Studio Code, this does not render the formatted eBook experience.

OEB Technical Info

Full Name
Open eBook Publication Structure
Developed By
Open eBook Forum
Initial Release
1999
MIME Type
application/x-oeb1-document

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert OTT to OEB in seconds

Every OTT to OEB conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert OTT to OEB via API

Automate OTT to OEB conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "ott-to-oeb",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "oeb"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.ott

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.