Unmarkdown

Paste into OneNote. Formatting intact.

AI tools output markdown. OneNote doesn’t understand it. We bridge the gap instantly.

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The Problem

OneNote turns your markdown into literal asterisks and hashes

You copy a response from ChatGPT or Claude, paste it into OneNote, and every formatting symbol shows up raw. Hash marks, asterisks, backticks, pipe characters all displayed as plain text.

Untitled Page
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# Project Update
Here's the **latest status** on Q4:
## Key Highlights

- Revenue grew by `42%`
- Satisfaction: **4.8/5**
| Metric | Value |
|--------|-------|
| Users  | 1,200 |
| Growth | 42%   |
```javascript const g = calcGrowth(q3, q4); ```
Project Update
FileHomeInsertDrawView
Project Update
Here's the latest status on Q4:

Key Highlights

  • Revenue grew by 42%
  • Satisfaction: 4.8/5
MetricValue
Users1,200
Growth42%
const g = calcGrowth(q3, q4);
Compatibility

What works in OneNote

Honest breakdown of what transfers and what doesn't.

Headings H1–H6

Full support

All six heading levels render with blue color and varying sizes. OneNote maps them to built-in heading styles natively, better than Google Docs.

Bold, italic & strikethrough

Full support

Bold, italic, bold+italic, and strikethrough all render correctly. Strikethrough works here unlike Google Docs.

Tables with formatting

Full support

Render with borders, blue header row with white text, and proper cell structure. Bold, italic, code, and links inside cells all preserved.

Lists & nesting

Full support

All 4 levels of nesting render correctly with indentation and different markers: bullet, circle, square, smaller square.

Code blocks

Full support

Render in monospace (Consolas) with correct indentation and light gray background. Each block is visually separate.

Links

Full support

All link types including email mailto render as blue underlined clickable text.

Blockquote indentation

Not supported

OneNote doesn’t support the blockquote element. Blockquotes render as italic gray text with no left border or indentation.

Syntax highlighting

Not supported

Code blocks render as monospace plain text only. No syntax highlighting or language labels.

Platform

Destinations are just the beginning.

Unmarkdown™ is a full markdown publishing platform. Templates, AI editing, and instant publishing included.

62 templates

Pick a template and your markdown transforms into a polished, responsive page.

Browse templates

12 AI actions

Fix grammar, adjust tone, add structure, translate. One click each, no prompting required.

See AI actions

Instant publishing

Publish your markdown as a beautiful page with a shareable URL. Analytics, SEO, and access controls included.

Learn about publishing
FAQ

Frequently asked questions.

Yes. All six heading levels (H1–H6) render with distinct styling and map to OneNote’s built-in heading styles. This is better than Google Docs, which only supports H1–H3.

Tables render with borders, a blue header row with white text, and proper cell structure. Formatting inside cells (bold, italic, code, links) is preserved.

OneNote doesn’t support the HTML blockquote element or CSS border-left on pasted content. This is a OneNote limitation. Blockquotes render as italic gray text instead.

Yes. Code blocks render in Consolas monospace font with a light gray background and correct indentation. Each code block is visually separate, unlike Word where they can merge.

No. Unmarkdown™ runs 100% in your browser. Your markdown is converted locally and copied to your clipboard. Nothing is ever sent to any server.

Yes. Any tool that outputs markdown works: ChatGPT, Claude, Gemini, Copilot, and more. Just paste the markdown into Unmarkdown™, click “OneNote”, and paste the result.

AI Tools

Convert from specific AI tools

Using a specific AI tool? These guides are tailored to each one.

Your markdown deserves a beautiful home.

Start publishing for free. Upgrade when you need more.

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