OPML vs TYPST
A detailed comparison of OPML Outline and Typst Document — file size, quality, compatibility, and which format to choose for your workflow.
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Technical Specifications
| Specification | .OPML | .TYPST |
|---|---|---|
| MIME type | text/x-opml | text/x-typst |
| Extension | .opml | .typ |
| Format | XML with nested <outline> elements | — |
| Standard | OPML 2.0 (2006) | — |
| Primary use | RSS subscription interchange | — |
| Encoding | — | UTF-8 |
| Output | — | PDF, PNG, SVG |
| Compiler | — | Rust-based, open-source Apache 2.0 |
Strengths Comparison
.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.
.TYPST Strengths
- Compiles 100× faster than LaTeX on equivalent documents.
- Clean, readable syntax — Markdown-like simplicity with real language features.
- Built-in collaborative web editor.
- Open source under Apache 2.0.
- Modern type system — every function call type-checked.
Limitations
.OPML — 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.
- No strong central stewardship.
.TYPST — Limitations
- Young ecosystem — package count is a tiny fraction of LaTeX CTAN.
- Academic journal submission pipelines still default to LaTeX.
- Advanced mathematical typography still trails LaTeX in some edge cases.
- No established printing-industry workflow — PDF is the only reliable output.
Frequently Asked Questions
OPML (OPML Outline) is a document format used to store paginated text, with optional formatting, tables, images, hyperlinks, headers and footers. It sits in the documents & text family and is typically associated with a specific office suite or publishing pipeline that defined the format and ships the canonical reader.
TYPST (Typst Document) is a document format used to store paginated text, with optional formatting, tables, images, hyperlinks, headers and footers. It sits in the documents & text family and is typically associated with a specific office suite or publishing pipeline that defined the format and ships the canonical reader.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — open most OPML files with reasonable fidelity. If your installed software does not support OPML, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Modern office suites — Microsoft Word, Google Docs, LibreOffice Writer, Apple Pages — open most TYPST files with reasonable fidelity. If your installed software does not support TYPST, convert to DOCX or PDF first using KaijuConverter; both open in virtually every reader, including free online viewers.
Upload the OPML to KaijuConverter and pick DOCX, PDF, ODT, RTF, HTML, Markdown, or plain text. Our pipeline runs LibreOffice headlessly plus pandoc for text formats — the same engines behind professional document pipelines. Styles, tables, images, and hyperlinks survive the conversion intact.
Yes, to a high degree. Standard fonts, headings, lists, tables, images, hyperlinks and page structure transfer cleanly. Custom fonts substitute to the closest match if not embedded; obscure layout features unique to OPML (frames, legacy macros) may flatten to static content in the target format.
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