Markdown to OPML Converter
Processing entirely on your device — large files may take a moment.
The .markdown extension is simply Markdown with its full name — identical syntax, identical tools, a spelling some editors and wikis hand out by default. Convert OPML outlines into Markdown or Word documents, or turn bullet lists back into an importable outline.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How Markdown compares to OPML
| Markdown | OPML | |
|---|---|---|
| Structure | Line-based markup | XML <outline> tree |
| Types / schema | None | XML, text + attributes |
| Compatibility | GitHub, editors, SSGs, note apps | RSS readers, outliners, Pandoc |
| Best for | Documentation, READMEs, writing | Subscriptions lists and mind maps |
How to convert Markdown to OPML
- 1
Select your files
Drag & drop your Markdown files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to OPML". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted OPML file individually, or grab everything at once as a ZIP archive.
About the Markdown format
Markdown (John Gruber, 2004) is plain text that renders into rich documents: `#` headings, `*` emphasis, lists, links, code fences. You can write it in any editor, read it as-is, diff it in git, and twenty years later it still opens — which is why GitHub, Stack Overflow, Notion, Obsidian and every static-site generator settled on it for prose.
Its one honest weakness is dialect fragmentation: tables, footnotes and task lists all started as extensions (GFM, MultiMarkdown, Pandoc), so a sophisticated document can render differently across tools. Core Markdown — headings, lists, links, code — is bulletproof everywhere.
+ Strengths
- ✓Future-proof plain text, renders anywhere
- ✓Perfect for version control and documentation
- ✓Low-friction: readable even unrendered
! Limitations
- −Extension dialects fragment advanced features
- −Complex layout and precise design are out of scope
About the OPML format
OPML (Outline Processor Markup) is XML for hierarchies: nested <outline> elements, each with text and optional attributes. It is the silent standard behind podcast and RSS subscription lists — every "export subscriptions" button produces one — and the interchange format for outliners like Workflowy, Dynalist and OmniOutliner.
An outline is already half a document: Pandoc turns OPML hierarchies into Markdown headings, Word outlines or HTML pages with the nesting preserved, and can write OPML back out so a bulleted plan becomes an importable tree in your outliner of choice.
+ Strengths
- ✓Universal outline exchange between outliners
- ✓The RSS/podcast subscription standard
- ✓Trivially parseable XML
! Limitations
- −Hierarchies only — no rich text per node
- −Attribute conventions vary between apps
- −Rarely rendered directly for humans
Why convert Markdown to OPML?
There is a concrete reason this conversion exists: Extension dialects fragment advanced features OPML sidesteps that — Universal outline exchange between outliners If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this Markdown to OPML converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for Markdown to OPML?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Can I edit the OPML result afterwards?
That depends on the target: OPML is designed for what it does, and this converter reproduces its content faithfully rather than inventing editable structure. For heavy re-editing, work from a format built for editing and export the final version here.
Does the conversion work offline?
Yes. Once the page has loaded, the conversion itself runs entirely inside your browser — you can even disconnect and keep converting. No file ever touches a server.