How to Paste ChatGPT Into Slack With Formatting (Tested)

To paste a ChatGPT answer into Slack with the formatting, copy it as markdown text and paste it straight into the Slack message box. On 31 October 2026 we pasted a ChatGPT-style answer into Slack's web app as markdown, and Slack formatted all of it on paste: the heading, bold, italics, the numbered list, the link, a table, a code block, a quote and strikethrough. The same answer copied as formatted text (select it, then Cmd+C) lost the heading and the strikethrough, and its table collapsed into one line of run-together words.

So the copy method matters more than any converter:

• Copied as markdown text (you see **, # and | when you paste it into a plain text editor): paste it into Slack as it is. Everything formats.
• Copied as formatted text (bold already looks bold in a text editor): bold, italics, lists, links, code and quotes survive; headings, tables and strikethrough do not.

The same holds for text from Claude, Gemini, Copilot and Notion, because what Slack reads is the clipboard, not the app it came from.

What we pasted, and what Slack did with it

The test answer was a short release plan with one of each element ChatGPT uses:

### Release checklist for Friday

Here is a short plan you can share with the team:

1. **Freeze** the main branch at 3 pm
2. Run the *smoke tests* on staging
3. Post the notes in [the release doc](https://example.com/release)

| Step | Owner | Due |
| --- | --- | --- |
| Freeze | Mina | 3 pm |
| Smoke tests | Joon | 4 pm |

> Tip: tag ~~everyone~~ only the on-call person.

Between the table and the quote sat a fenced bash code block holding one line, npm run test:smoke.

Pasted as markdown text, Slack converted it in the message box before we sent anything. The table and the code block turned into cards inside the box:



Then we pasted the same answer as formatted text, the way a browser copies it when you select the answer and press Cmd+C, and sent both. The first message below is the markdown paste and the second is the formatted-text paste:



What Slack stored, read back with conversations.history:

Element in the answer	Pasted as markdown text	Pasted as formatted text
### heading	A header block, shown large and bold	Plain text line
**bold** and *italic*	Bold and italic	Bold and italic
Numbered list	A real list	A real list
[text](url) link	Linked text	Linked text
Pipe table	A table block with 3 columns	One run-together line
Code fence with bash	A code block labelled Shell, with line numbers	A plain code block
> quote	Quote	Quote
~~strike~~	Struck through	Plain text

The markdown message held five blocks (header, rich_text, table, rich_text, rich_text); the formatted-text one held a single rich_text block.

If the markdown does not format

If you see raw ** or # after pasting, check these in order:

• • Format messages with markup is on. With that option in Preferences > Advanced, Slack leaves every character as typed. Turn it off.
• • You pasted it as plain text. Cmd+Shift+V (Ctrl+Shift+V on Windows) pastes without any conversion. Use a normal Cmd+V or Ctrl+V.
• • The clipboard holds formatted text, not markdown. Copy the answer again as markdown, or paste it into a plain text editor first, copy it from there, and paste into Slack.
• • The text goes to a bot, webhook or workflow, not the message box. The API does not convert markdown for you. Run it through our Markdown to Slack converter, which writes Slack's own mrkdwn (one asterisk for bold, <url|text> links), and send that.

What changed on paste versus typing, and the API cases, are in Slack markdown not working.

Ask ChatGPT for a Slack-ready answer

If the answer will be posted by a bot or pasted where markdown does not convert, ask for Slack's markup from the start. Add this to the prompt, or to ChatGPT's custom instructions:

Format the answer for a Slack message:
- bold with one asterisk on each side, like *this*
- italics with underscores, like _this_
- no # headings; use a bold line instead
- bullets with the character •
- links as <https://example.com|text>
- code in triple backticks, with no language name
Keep it under 150 words.

ChatGPT does not always follow formatting rules, so glance at the result before you send.

Paste as plain text instead

To drop all formatting and paste only the words, use Cmd+Shift+V on a Mac or Ctrl+Shift+V on Windows and Linux. It is the right choice when you want to rewrite the answer in your own words, which reads better in a chat than a pasted essay.

Can you use ChatGPT inside Slack?

Yes. OpenAI has a ChatGPT app for Slack, listed in the Slack Marketplace. With an app, you ask inside Slack and do not copy and paste. Your workspace admin may have to approve the app first. Before you paste work content into ChatGPT, check your company's AI policy; what your employer can see is covered in can my employer see my ChatGPT history.

FAQ

Can Slack show a ChatGPT table as a table? Yes, if you paste it as markdown text. In our test the pipe table became a real 3-column table in the message. Pasted as formatted text, it collapsed into one line.

Why does ChatGPT text show asterisks in Slack? It was pasted with Cmd+Shift+V, Format messages with markup is on, or a bot sent it through the API, which does not convert markdown. A normal Cmd+V of markdown text formats it.

Does this work with Claude or Gemini answers? Yes. Slack reads the clipboard, so markdown text from any app formats the same way.