Convert standard Markdown to Slack's mrkdwn. Bold, italic, code, lists — all translated.
Free Markdown to Slack Formatter translates standard Markdown into Slack's mrkdwn dialect. Bold markers collapse from ** to *, italics switch to underscores, strikethrough goes from ~~ to ~, and links become
Privacy: This tool runs entirely in your browser. Your text is never uploaded, logged, or cached. Close the tab and it's gone. Verify in DevTools → Network: zero requests fire.
Every team lead has hit the 'my bold looks wrong in Slack' moment. Fixing it shouldn't take a paid tool. The converter runs 100% in your browser.
| Input | Output | Typical size | Speed | Login needed |
|---|---|---|---|---|
| Markdown (.md) | Slack mrkdwn | Any message size | < 10 ms | No |
Here's what this free tool does in detail — every feature is built to solve real problems, runs entirely in your browser, and is free forever.
Standard Markdown uses **bold**, *italic*, ~~strike~~, and [text](url). Slack uses *bold*, _italic_, ~strike~, and <url|text>. The converter rewrites every one of these correctly and leaves code blocks, inline code, blockquotes, and list markers alone (since Slack's dialect matches on those).
For the opposite platform, see the Free Markdown to Discord tool.
Slack doesn't render heading markers. By default, the converter turns # Heading and ## Subheading into bold lines on their own. Toggle Headings as bold off to drop heading markers entirely.
Standard Markdown links like [click here](https://example.com) become Slack's <https://example.com|click here>. Images () become alt: url since Slack doesn't render inline images from message markdown. Toggle link conversion off if you prefer to keep standard MD syntax in a code snippet.
Content inside triple-backtick blocks is never rewritten — your code examples stay exactly as you wrote them. The optional language hint (e.g. ```javascript) is stripped since Slack ignores it, but the code itself is preserved byte-for-byte.
For preparing a code snippet in other formats, try the Markdown to HTML tool with syntax highlighting enabled.
Paste any GFM-flavored Markdown into the input, or click Load example.
Most defaults are right for Slack. Adjust headings-as-bold or link conversion if your use case differs.
Click Copy for Slack and paste directly into a Slack channel, DM, or thread.
Write the deploy checklist in Markdown, convert once, paste into #deploys.
Format quickly with standard Markdown, publish to Slack with one paste.
Paste the draft in clean Markdown, let the tool translate, show teammates the right way.
Bold highlights, italic asides, linked Jira tickets — all translated correctly in one go.
Paste a runbook snippet into #on-call with proper formatting preserved.
Yes. Free forever, no account required.
Single asterisk for bold (not double), single underscore for italic, single tilde for strikethrough, angle-bracket links.
No — Slack ignores # markers. This tool rewrites them as bold lines by default.
Yes. Triple-backtick fenced blocks render in Slack (without language hints).
No. Runs 100% in your browser.