CONVERT OPML → ODT (OPML to ODT)
Fast, secure OPML to ODT conversion. No registration required.
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Ghostscript + QPDFHOW TO CONVERT OPML → ODT
Drop the OPML file
Upload your document — or a ZIP of several documents for batch conversion — through the web form.
Convert through pandoc
Our pandoc-based pipeline opens the OPML, preserves structure and typography, and writes the ODT.
Retrieve the document
Click the download button; the ODT is delivered as a single file (or ZIP of files for batch jobs).
Setup: OPML is a document format oriented around a particular office suite or publishing pipeline. Goal: an interchangeable ODT. A OPML → ODT conversion gives you the right artefact for the next step in the document life cycle. Maybe you are moving from drafting to distribution, or from a proprietary format into an open one, or simply answering a colleague who asked for ODT. KaijuConverter delivers a faithful re-render without any desktop software install. Keep in mind OPML is a document format oriented around a particular office suite or publishing pipeline. And remember that ODT is the OpenDocument Text format, the native save format of LibreOffice and OpenOffice.
Why convert OPML to ODT
Opening OPML in the tool that natively reads ODT is rarely clean. Converting upstream rebuilds the document in the target format so headings become headings, lists stay lists, and the receiving tool does not flag layout warnings.
OPML vs ODT — Technical specifications
Side-by-side comparison of the technical details.
OPML
- MIME type
- text/x-opml
- Extension
- .opml
- Format
- XML with nested <outline> elements
- Standard
- OPML 2.0 (2006)
- Primary use
- RSS subscription interchange
- MIME Type
- text/x-opml
- Category
- Documents & Text
- Full Name
- OPML Outline
- Conversion Engine
- PANDOC
ODT
- MIME type
- application/vnd.oasis.opendocument.text
- Extension
- .odt
- Standard
- ISO/IEC 26300 (OASIS ODF 1.0 / 1.3)
- MIME Type
- application/vnd.oasis.opendocument.text
- Category
- Documents & Text
- Full Name
- OpenDocument Text
- Conversion Engine
- PANDOC
- Container
- ZIP (OpenDocument Format)
- Native to
- LibreOffice, OpenOffice, Collabora
| Specification | OPML | ODT |
|---|---|---|
| MIME type | text/x-opml | application/vnd.oasis.opendocument.text |
| Extension | .opml | .odt |
| Format | XML with nested <outline> elements | — |
| Standard | OPML 2.0 (2006) | ISO/IEC 26300 (OASIS ODF 1.0 / 1.3) |
| Primary use | RSS subscription interchange | — |
| MIME Type | text/x-opml | application/vnd.oasis.opendocument.text |
| Category | Documents & Text | Documents & Text |
| Full Name | OPML Outline | OpenDocument Text |
| Conversion Engine | PANDOC | PANDOC |
| Container | — | ZIP (OpenDocument Format) |
| Native to | — | LibreOffice, OpenOffice, Collabora |
OPML vs ODT — Strengths and limitations
What each format does best, and where it falls short.
OPML Strengths
- Standard RSS subscription interchange format.
- Simple XML — easy to parse and generate.
- Highly extensible via arbitrary attributes.
- Supported by every major outline and RSS tool.
Limitations
- XML verbosity — larger than a JSON-based equivalent.
- Specification is loose — different tools disagree on edge cases.
- Primary use (RSS reading) has shrunk dramatically since Google Reader.
ODT Strengths
- Truly open standard — ISO/IEC 26300, vendor-neutral.
- Native format of LibreOffice and OpenOffice, two of the largest FOSS projects.
- Human-readable XML, easy to script and parse.
- Preferred by many governments for archival and public records.
- ZIP compression keeps files compact.
Limitations
- Microsoft Word support exists but subtly breaks formatting when round-tripping.
- Less common outside the FOSS ecosystem — most business workflows default to DOCX.
- Fewer third-party tools than for DOCX.
Quality & Compatibility
Headings, paragraphs, lists, tables, hyperlinks and inline images all survive the conversion with their semantic structure intact. Rare features unique to OPML — legacy macros, form fields, obscure frame styles — are flattened to static content where no direct ODT equivalent exists. Tracked changes, where both formats support them, transfer cleanly.
Tips for Best Results
- Round-tripping between OPML and ODT (converting back and forth) can accumulate small formatting drift — do one conversion and stay in that format.
- If the OPML has tracked changes, accept or reject them before converting to avoid surprises in the ODT output.
- Very long documents split cleanly at existing section breaks; add section breaks deliberately if you need precise page boundaries.
Frequently Asked Questions
Yes, as long as the fonts are standard (system fonts or common office fonts like Arial, Calibri, Times, Helvetica). Custom corporate fonts survive if they are embedded in the source document; otherwise the conversion substitutes the closest available match, which can shift line breaks by a character or two.
Yes. Inline images are embedded into the ODT at full resolution, editable tables become native ODT tables, and hyperlinks keep their URLs. Complex features unique to OPML — macros, form fields, track-changes — are mapped where an equivalent exists in ODT and flattened into static content otherwise.
All uploads go over TLS, files are processed in isolated containers and both the source and the output are deleted within two hours. No account is required, file contents are never indexed or used for training, and the paid plan adds a signable data-processing agreement for regulated workflows.
OPML Outline
Source formatOPML (Outline Processor Markup Language) is an XML format for structured outlines and lists. It is most widely used for exchanging RSS feed subscription lists between podcast apps and feed readers, and for hierarchical note-taking.
OpenDocument Text
Target formatODT is the open-standard document format used by LibreOffice Writer and other open-source word processors. It offers full document editing capabilities without vendor lock-in.
Going the other way? Convert ODT back to OPML with the same engine.
Common Use Cases
Share across platforms
Send ODT files to anyone without worrying about whether they have the right software for OPML.
Embed in documents
Drop ODT output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
ODT often produces smaller files than OPML for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
OPML vs ODT — Typical file sizes
Approximate file sizes for common scenarios.
- Typical RSS reader export (50 feeds) 5-30 KB
- Deep outline (Scrivener novel plan) 20-200 KB
- Short letter 10-30 KB
- Academic paper (20 pages) 50-200 KB
- Illustrated report 1-10 MB
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Related comparisons
See these formats side by side to understand which fits your use case best.
Related Guides
ODT OpenDocument Text: The Complete Format Guide
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Read guide →OPML Format Guide: Podcast Subscriptions, RSS Feeds & Outlines
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