CONVERT OPML → T2T (OPML to T2T)
Fast, secure OPML to T2T conversion. No registration required.
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Studio Panel
Ghostscript + QPDFHOW TO CONVERT OPML → T2T
Provide the document
Select a OPML file. Very large documents (100+ pages) may take a few extra seconds to render completely.
Render to T2T
LibreOffice plus supporting filters translate the OPML into a fully-formed T2T with no structural drift.
Save the result
The converted T2T streams back over HTTPS; open in the target application to verify formatting.
Setup: OPML is a document format oriented around a particular office suite or publishing pipeline. Goal: an interchangeable T2T. Converting OPML to T2T online saves installing office suites you use once a year. Upload the document, let the server render it through the same pipeline large publishers use, and download a polished T2T that keeps its original structure and typography. Technical note: OPML is a document format oriented around a particular office suite or publishing pipeline. Compare that with T2T is a document format oriented around a particular office suite or publishing pipeline.
Why convert OPML to T2T
The driver for a OPML to T2T conversion is almost always the downstream audience: the editor, archivist, signer or reader who expects a T2T. Doing the conversion in a proper rendering pipeline, rather than hoping the receiving tool will figure it out, avoids layout drift and font substitutions.
OPML vs T2T — 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
T2T
- MIME type
- text/x-txt2tags
- Extension
- .t2t
- Targets
- 15+ formats including HTML, LaTeX, man, Wiki
| Specification | OPML | T2T |
|---|---|---|
| MIME type | text/x-opml | text/x-txt2tags |
| Extension | .opml | .t2t |
| Format | XML with nested <outline> elements | — |
| Standard | OPML 2.0 (2006) | — |
| Primary use | RSS subscription interchange | — |
| Targets | — | 15+ formats including HTML, LaTeX, man, Wiki |
OPML vs T2T — 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.
T2T Strengths
- Plain-text source → multi-format output.
- Simple syntax.
- Tiny implementation.
Limitations
- Superseded by Pandoc.
- Tiny ecosystem.
- Limited modern tooling.
Quality & Compatibility
The conversion preserves document structure rather than pixel-perfect rendering: a paragraph in OPML is a paragraph in T2T, not a bitmap snapshot. That means you can still edit and search the T2T. If you need exact visual fidelity (for legal or print workflows), export to PDF as the final step.
Tips for Best Results
- Run a spell-check in the T2T after conversion — occasionally hyphenation or language tagging shifts and typos become invisible to the original checker.
- Include fallback generic fonts (sans-serif, serif) in your style definitions so the T2T degrades gracefully when a font is missing on a viewer device.
- For archive-quality output, export to PDF/A after converting to T2T; this locks the document against future rendering drift.
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 T2T at full resolution, editable tables become native T2T tables, and hyperlinks keep their URLs. Complex features unique to OPML — macros, form fields, track-changes — are mapped where an equivalent exists in T2T 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.
txt2tags
Target formattxt2tags is a minimal markup language that can be converted to many output formats including HTML, LaTeX, DocBook, and plain text. Its syntax is intentionally simple, using only ASCII characters for all formatting directives.
Going the other way? Convert T2T back to OPML with the same engine.
Common Use Cases
Share across platforms
Send T2T files to anyone without worrying about whether they have the right software for OPML.
Embed in documents
Drop T2T output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
T2T 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 T2T — 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 article source 2-20 KB
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Related comparisons
See these formats side by side to understand which fits your use case best.
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