The .markdown extension is simply Markdown with its full name — identical syntax, identical tools, a spelling some editors and wikis hand out by default.
Typical use: Convert .markdown files exactly like .md — into HTML, Word, EPUB or any rich format.
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
- Structure
- Line-based markup
- Types / schema
- None
- Compatibility
- GitHub, editors, SSGs, note apps
- Best for
- Documentation, READMEs, writing
Convert Markdown to…
20 direct directions, sorted A–Z; 🔥 marks popular targets.
Convert other files to Markdown…
Frequently asked questions
What is a Markdown file?
The .markdown extension is simply Markdown with its full name — identical syntax, identical tools, a spelling some editors and wikis hand out by default.
How do I convert Markdown files online?
Pick a target format from the "Convert Markdown to…" list below, drop your file and hit convert. Everything runs in your browser — no install, no upload, no watermark, no limits.
Is it safe to convert Markdown files here?
Yes. Every conversion is performed by your own device inside the browser — files never leave for a server, and the page keeps working even offline.
Which formats can Markdown convert to?
This page lists all 20 directions across documents, images, audio, video, spreadsheets and archives — each one is its own free converter page.