Free online OPML to MD converter

OPML (Outline Processor Markup Language) is an XML-based format used to store outlines, lists, feeds, and hierarchical notes. MD usually means Markdown, a lightweight plain-text format used for formatted documents, notes, and web content.

What is OPML to MD conversion

OPML to MD conversion transforms an outline structure from OPML into readable Markdown syntax. Headings, nested bullets, and notes in OPML are typically mapped to Markdown headings, lists, and paragraphs.

Why convert OPML to Markdown

Markdown is easier to edit, version, and publish than OPML. Converting to MD helps when you want to:

• edit outlines in plain text editors
• publish content on GitHub, static sites, or documentation tools
• reuse structured notes in Markdown-based workflows
• share content in a widely supported format

How the conversion usually works

Typical mapping rules include:

• OPML outline items become Markdown headings or list items
• nested OPML levels become indented lists or subheadings
• attributes and metadata may be omitted or converted into comments
• links and notes can be preserved as Markdown links or paragraphs

Best software and converters

The best choice depends on whether you need a quick one-time conversion or repeatable automation.

• pandoc — best for command-line conversion workflows and batch processing
• Python scripts — best for custom OPML structure handling and automation
• online OPML converters — best for quick manual conversions without installation
• VS Code with Markdown tools — useful for reviewing and refining the output after conversion

Recommended method

Pandoc is often the best starting point if your OPML content is simple and you want a reliable local tool. For more complex outlines, a custom script may produce cleaner Markdown because you can control heading levels, list formatting, and metadata handling.

Conversion tips

• Check heading depth so nested outlines do not become too deep in Markdown
• Review links to ensure URLs are preserved correctly
• Clean metadata if the OPML file contains feed or application-specific fields
• Validate the output in a Markdown previewer before publishing

Example workflow

1. Open the OPML file in your chosen converter
2. Map outline levels to Markdown headings or lists
3. Export or save the result as .md
4. Review formatting in a Markdown editor

Summary

OPML to MD conversion is a practical way to turn hierarchical outlines into editable Markdown. For most users, pandoc or a dedicated script offers the best balance of speed and control.