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Guide · Markdown to Slack

Make Markdown readable in Slack

Slack’s message formatting is similar to Markdown, but it is not identical. DraftRelay prepares a Slack representation from the reviewed source artifact and warns when a structure such as a Markdown table may lose fidelity.

01Differences

Do not treat the Slack composer as a full Markdown renderer.

Markdown headings, labeled links, and task-list markers need adaptation for Slack-style text. Tables have no reliable equivalent in an ordinary message. Deeply nested lists, complex HTML, images, and footnotes should be rewritten for the channel rather than passed through mechanically.

There is also a difference between text pasted into Slack’s composer and mrkdwn sent through Slack APIs. DraftRelay prepares copyable Slack text; it does not post through the Slack API. Always inspect the pasted result in the actual target before sending.

02Transform

Preserve meaning with a smaller formatting vocabulary.

Common Markdown-to-Slack transformations
Source MarkdownSlack representation
## Status*Status*
**verified***verified*
[Preview](https://example.com)<https://example.com|Preview>
- [x] Tests• ✅ Tests
- [ ] Deploy• ☐ Deploy

Code spans and fenced code remain useful when the content is genuinely code. Markdown tables trigger a warning because their columns may collapse. Rewrite a small table as bullets; attach a file or link to a document when the tabular structure is essential.

03Workflow

Keep one source and prepare the destination at copy time.

  1. Write readable source Markdown.Use short headings, compact bullets, and explicit links.
  2. Review the source artifact.Verify the facts before spending time on destination syntax.
  3. Select Slack.DraftRelay builds the current revision’s Slack representation and surfaces warnings.
  4. Copy and paste.Nothing is sent by the product; you control the target channel.
  5. Inspect before sending.Confirm line breaks, links, code, and mentions in Slack itself.

04Example

Turn a document-shaped update into a channel-shaped update.

Source Markdown

## Checkout retry fix

**Verified:** 92 billing tests passed.

- [x] Reuse the idempotency key
- [ ] Run one staging checkout

[Open the preview](https://example.com/preview)

Prepared Slack text

*Checkout retry fix*

*Verified:* 92 billing tests passed.

• ✅ Reuse the idempotency key
• ☐ Run one staging checkout

<https://example.com/preview|Open the preview>

05Final checks

Slack can turn small syntax into a real notification.

  • Check every @name, user-group mention, and channel reference before sending.
  • Open links and confirm the visible label describes the actual destination.
  • Remove secrets, internal paths, customer identifiers, and log fragments that the channel should not receive.
  • Keep the first two lines scannable on mobile.
  • Use a thread or linked document when the update is too long for a channel message.