CONVERT OPML → DOCX (OPML to DOCX)
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Ghostscript + QPDFHOW TO CONVERT OPML → DOCX
Upload your OPML
Drop the document onto the uploader. We transfer over HTTPS and keep the file in an isolated processing container.
Render with LibreOffice
LibreOffice opens the OPML headlessly and writes it as DOCX with styles, tables and images mapped across.
Download the DOCX
The DOCX is ready to download; typography, pagination and embedded assets match what you saw in the source.
Setup: OPML is a document format oriented around a particular office suite or publishing pipeline. Goal: an interchangeable DOCX. If you are staring at a OPML and need a clean DOCX, retyping is never the answer — our converter routes the file through LibreOffice in headless mode and pandoc for text formats, which is the same pair of tools professional publishers rely on. Styles, tables, bullets and images all make it across. Context: OPML is a document format oriented around a particular office suite or publishing pipeline. DOCX is Microsoft Word's Office Open XML format, a ZIP of XML parts.
Why convert OPML to DOCX
OPML and DOCX both describe paginated text, but they target different parts of the document life cycle. OPML is usually editable; DOCX is usually final. Converting is about moving from editing to distribution (or the other way round) without losing headings, styles, tables or embedded images along the way.
OPML vs DOCX — 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
DOCX
- MIME type
- application/vnd.openxmlformats-officedocument.wordprocessingml.document
- Extension
- .docx
- Standard
- ISO/IEC 29500, ECMA-376
- MIME Type
- application/vnd.openxmlformats-officedocument.wordprocessingml.document
- Category
- Documents & Text
- Full Name
- Word Document
- Conversion Engine
- PANDOC
- Container
- ZIP archive (Office Open XML)
- Released in
- Microsoft Office 2007
- Legacy predecessor
- .doc (binary, OLE Compound File)
| Specification | OPML | DOCX |
|---|---|---|
| MIME type | text/x-opml | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| Extension | .opml | .docx |
| Format | XML with nested <outline> elements | — |
| Standard | OPML 2.0 (2006) | ISO/IEC 29500, ECMA-376 |
| Primary use | RSS subscription interchange | — |
| MIME Type | text/x-opml | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| Category | Documents & Text | Documents & Text |
| Full Name | OPML Outline | Word Document |
| Conversion Engine | PANDOC | PANDOC |
| Container | — | ZIP archive (Office Open XML) |
| Released in | — | Microsoft Office 2007 |
| Legacy predecessor | — | .doc (binary, OLE Compound File) |
OPML vs DOCX — 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.
DOCX Strengths
- Much smaller than the legacy .doc format thanks to ZIP compression.
- Human-readable XML inside — automated extraction and manipulation is straightforward.
- Preserves formatting, images, tables, footnotes, comments, and track changes.
- Supported natively by Word, LibreOffice, Pages, Google Docs, and most modern editors.
- ISO/IEC 29500 standardized — not locked to a single vendor.
Limitations
- Subtle formatting drifts when opened in non-Microsoft editors (fonts, line spacing, tab stops).
- Macros and embedded scripts make older .docm variants a common malware vector.
- Complex layouts with floating objects often reflow unpredictably.
Quality & Compatibility
LibreOffice handles the heavy lifting and maps the overwhelming majority of OPML features to their DOCX equivalents. Standard system fonts (Arial, Calibri, Times, Helvetica) transfer exactly; corporate or custom fonts are substituted with the closest available match, which can shift line breaks by a character or two. Inline images embed at original resolution.
Tips for Best Results
- Embed fonts in the OPML before uploading if you use non-system fonts — it guarantees the DOCX renders identically on any viewer.
- Check tables, figure captions and page headers after conversion; complex layouts occasionally need a minor nudge in the target application.
- For documents with a table of contents, refresh the TOC field after opening the DOCX so page numbers reflect the new pagination.
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 DOCX at full resolution, editable tables become native DOCX tables, and hyperlinks keep their URLs. Complex features unique to OPML — macros, form fields, track-changes — are mapped where an equivalent exists in DOCX 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.
Word Document
Target formatDOCX is the modern Microsoft Word format based on Open XML. It is the most widely used word processing format in business and education, supporting rich text, images, tables, and macros.
Going the other way? Convert DOCX back to OPML with the same engine.
Common Use Cases
Share across platforms
Send DOCX files to anyone without worrying about whether they have the right software for OPML.
Embed in documents
Drop DOCX output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
DOCX 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 DOCX — 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 (1 page) 15–30 KB
- Academic paper (20 pages, no images) 80–200 KB
- Report with several images (30 pages) 1–5 MB
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Related comparisons
See these formats side by side to understand which fits your use case best.
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