Convert Slack's mrkdwn messages back to standard GitHub-Flavored Markdown.
Free Slack to Markdown Converter takes Slack's mrkdwn dialect and rewrites it as standard GitHub-Flavored Markdown. Single asterisks become double, single tildes become double, angle-bracket links become [text](url), and user mentions unwrap to @handle. Code blocks and inline code are preserved byte-for-byte.
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.
Copying a Slack message into a GitHub issue or a doc and watching the formatting break is a universal annoyance. The converter runs 100% in your browser, and you never need an account.
| Input | Output | Typical size | Speed | Login needed |
|---|---|---|---|---|
| Slack mrkdwn | Markdown (.md) | 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.
Slack uses *bold*, _italic_, ~strike~, and <url|text>. Standard Markdown uses **bold**, _italic_, ~~strike~~, and [text](url). This converter rewrites every one of these correctly and leaves code blocks untouched.
For the opposite direction, use the Free Markdown to Slack Formatter.
Slack pastes mentions as raw refs: <@U12345> for users, <#C12345|channel> for channels, and <!channel>/<!here> for group pings. The converter unwraps these to @U12345, #channel, and @channel so they read naturally outside Slack. Toggle it off if you want to preserve the raw IDs.
If the resulting Markdown also needs a rendered preview before pasting into GitHub, try the Free Markdown Live Preview.
Triple-backtick fenced code and single-backtick inline code are extracted before any rewriting happens and re-injected at the end, so an asterisk or tilde inside a code example never gets rewritten as bold or strike. This matters when you're copying a shell command or regex out of #on-call.
Most messages convert perfectly with defaults, but real Slack data is messy. Convert bold lets you keep *text* as-is if you're sure it's already standard Markdown. Italic as asterisks switches _italic_ to *italic* if your downstream editor prefers asterisks. Unwrap mentions decides whether to humanize or preserve user/channel refs.
For extracting just the links out of a Slack dump, try the Free Markdown Link Extractor after conversion.
Copy a message from Slack (right-click → Copy text) and paste it into the input.
Defaults handle 99% of cases. Toggle bold, italic, or mention handling if your source is unusual.
Click Copy Markdown and paste into GitHub, a Markdown editor, a blog post, or a docs repo.
Save important #deploys or #incidents threads to a GitHub wiki or Obsidian vault with real formatting preserved.
Copy the live-response thread straight into the post-mortem doc — no reformatting by hand.
Draft in Slack, paste into this tool, publish to any Markdown-based blog.
Copy a support thread into a runbook or KB article with bold, code, and links intact.
Archive #announcements messages to a static site without losing formatting.
Yes. Free forever, no account required.
Slack's *bold* becomes **bold**, ~strike~ becomes ~~strike~~,
Yes. Fenced and inline code are protected from rewriting.
Emoji shortcodes like :smile: are left as-is — run the output through the Markdown Emoji Converter for unicode conversion.
No. Runs 100% in your browser.