Paste markdown.
Copy forSlack
AI tools output markdown. Slack speaks mrkdwn, not markdown. We translate it instantly.
Slack mangles your markdown into raw symbols
You copy a response from ChatGPT or Claude, paste it into Slack, and the formatting is all wrong. Double asterisks instead of bold, hash marks instead of headings, pipe characters instead of tables.
## Key Highlights - Revenue grew by `42%` - Satisfaction: **4.8/5**
|--------|-------| | Users | 1,200 | | Growth | 42% |
Key Highlights
- Revenue grew by
42% - Satisfaction: 4.8/5
| Metric | Value |
|---|---|
| Users | 1,200 |
| Growth | 42% |
const g = calcGrowth(q3, q4);What works in Slack
Bold, italic & strikethrough
Full supportConverted to Slack’s mrkdwn format: *bold*, _italic_, ~strikethrough~. All render correctly after posting.
Inline code & code blocks
Full supportInline code renders in pink monospace. Code blocks use Slack’s native triple-backtick formatting with gray background.
Links
Full supportConverted to Slack’s native link format. Render as clickable text after posting.
Lists (flat)
Full supportUnordered and ordered lists render with bullet points and numbers. Flat lists work perfectly.
Blockquotes
Full supportConverted to Slack’s native > quote formatting with gray left border. Multi-line blockquotes work correctly.
Nested lists
Partial supportChild items appear indented in the composer but indentation is text-based. When posted, nested items may lose their visual hierarchy.
Headings
Not supportedSlack has no concept of headings. All heading levels (H1–H6) render as plain bold text with no hierarchy.
Tables
Not supportedSlack has no table support. Tables render as plain text with pipe characters. No grid, no formatting.
Simple pricing
Free forever. Pro when you need it.
Free
No account required
- Unlimited clipboard conversions
- All 6 destination formats
- Plain Text output
- 100% private, runs in your browser
Pro
per month, billed annually
- Everything in Free, plus:
- All 62 templates (8 free)
- Unlimited file downloads (DOCX, PDF, HTML)
- AI-Powered Unicode Fix
- Batch file conversion
- Conversion history and re-copy
- 5,000 API calls/month
- Browser extension features
API
Pay only for what you use
- 500 free calls/month
- REST API access
- OpenAPI spec + SDKs
- ~$0.002 per call after free tier
- 120 req/min rate limit
Questions?
Slack’s messaging format (mrkdwn) simply doesn’t support headings. There’s no equivalent of H1–H6. Unmarkdown™ converts headings to bold text, which is the closest Slack equivalent.
Slack has no table support at all. Unmarkdown™ formats tables as readable plain text so the data is still clear, but there’s no grid or cell structure.
Yes. Unmarkdown™ converts standard markdown to Slack’s mrkdwn format: *bold*, _italic_, ~strikethrough~, and native code blocks. Everything renders correctly after posting.
Yes. Code blocks use Slack’s native triple-backtick formatting and render with a gray background and monospace font. Language labels are not shown.
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 “Slack”, and paste the result.
Convert from specific AI tools
Using a specific AI tool? These guides are tailored to each one.