Convert a draft into real Slack mrkdwn — single-asterisk bold, italic, quotes, code, and bullet lists — that renders the moment you paste it into a channel or DM.
Slack uses its own mrkdwn dialect where bold is a single asterisk on each side (*bold*), italic is single underscores (_italic_), and strikethrough is single tildes (~strike~). The big gotcha is bold: standard markdown uses two asterisks, but Slack uses one, so pasted ChatGPT text with **double asterisks** shows the literal stars. This tool converts your draft into real Slack mrkdwn, single-asterisk bold included, so it renders the moment you paste it into a message.
| Formatting | Slack |
|---|---|
| Bold | ✓ |
| Italic | ✓ |
| Underline | ✕ |
| Strikethrough | ✓ |
| Headings | ✕ |
| Bulleted lists | ✓ |
| Numbered lists | ✓ |
| Inline code | ✓ |
| Code blocks | ✓ |
| Quotes | ✓ |
| Links | ✕ |
| Spoilers | ✕ |
Unsupported styles are dropped automatically when you copy, so nothing pastes in as broken markup.
Because Slack's mrkdwn uses a single asterisk for bold, not the double asterisk of standard markdown. When you paste ChatGPT output full of **double asterisks**, Slack prints the stars literally. This formatter rewrites them to Slack's single-asterisk form, so the text actually goes bold.
No. Slack's message formatting covers bold, italic, strikethrough, quotes, inline code, code blocks and lists, but there is no underline and no markdown heading. The editor disables those buttons for Slack and drops them on copy.
Slack renders bulleted lists with a bullet character at the start of each line. You build the list in the editor and Copy outputs the bullets, so it looks the same whether the reader is on desktop or mobile.
Yes. Slack's composer accepts mrkdwn shortcuts as you type, and pasted mrkdwn is converted to formatting. If your workspace uses the rich-text box, the single-asterisk bold and other symbols still trigger the correct styles.
That is exactly what this is for. Paste the AI draft, and the tool strips markdown noise and hidden characters, then re-emits Slack mrkdwn with single-asterisk bold, quotes and bullet lists that render correctly instead of showing raw symbols.
Slack calls its formatting "mrkdwn," and it deliberately differs from the markdown you know from GitHub or Reddit. The differences are small but they break pasted text in obvious ways — especially bold. This page gives you a visual editor: style your message, click Copy, and it emits the exact mrkdwn Slack renders.
In Slack, bold is one asterisk on each side, *like this*, not the two that ChatGPT, Word, and most markdown use. Paste an AI draft full of **double asterisks** and Slack shows the literal stars instead of bolding anything. The formatter converts double to single automatically, so your emphasis actually lands.
*text* (one asterisk, not two)_text_~text~> quoted line`code````• per line1. itemSlack has no underline and no headings, so the editor disables those for Slack and drops them on copy.
A single Slack message can run to roughly 40,000 characters, so length is rarely the constraint — readability is. Lead with a bold line, break walls of text into bullets, and use a code block for anything with fixed spacing. The same paste-and-clean workflow helps on LinkedIn, which strips your formatting in a different but equally frustrating way.
Cross-posting to Discord, WhatsApp, Telegram, or Reddit? Each has its own formatter here that matches that app's syntax. To clean an AI draft on its own, use the AI text formatter or browse all tools.