# Markdown to Slack mrkdwn

Convert GitHub-flavored Markdown into Slack-friendly mrkdwn and flag unsupported constructs

> Canonical page: https://elysiatools.com/en/tools/markdown-to-slack-mrkdwn

- **Category:** Format Conversion

- **Keywords:** markdown, slack, mrkdwn, format conversion, chat

## Overview

Rewrites headings, emphasis, lists, links, and code fences into Slack-style formatting, while surfacing tables, task lists, images, and other elements that may need manual cleanup.

## Inputs

- **Markdown** (textarea): Paste GitHub-flavored Markdown here
- **Annotate Unsupported Elements** (checkbox)

## When to use

- When preparing release notes, changelogs, or documentation written in Markdown for posting in Slack channels.
- When you need to identify incompatible Markdown elements like tables, task lists, or images before sending messages to Slack.
- When formatting automated notification templates to ensure they render correctly in the Slack chat interface.

## How it works

- Paste your GitHub-flavored Markdown text into the input area.
- Toggle the option to annotate unsupported elements if you want to flag structures like tables or task lists.
- Click convert to generate the Slack-friendly mrkdwn output along with a list of elements requiring manual cleanup.

## Use cases

- Formatting software release notes from GitHub to share in team Slack channels.
- Converting project documentation summaries into clean Slack announcements.
- Identifying incompatible Markdown syntax in automated notification templates before sending them to Slack webhooks.

## Frequently asked questions

### How does this tool handle Markdown headings?

It converts standard Markdown headings (like # Heading) into bold text (*Heading*) because Slack does not natively support header sizes.

### What happens to unsupported elements like tables or images?

If annotation is enabled, the tool flags these elements in the output JSON so you can manually format or remove them.

### Does this tool post directly to Slack?

No, it only converts the text format. You must copy the resulting mrkdwn and paste it into Slack or send it via Slack's API.

### How are lists converted?

Standard Markdown bullet lists are converted to Slack-friendly bullet points using bullet characters (•).

### Can I convert task lists?

Task lists are not natively supported by Slack mrkdwn and will be flagged as unsupported elements for manual cleanup.

## Related tools

- [CSV to Markdown](https://elysiatools.com/en/tools/csv-to-markdown): Convert CSV data to Markdown table format
- [Excel to Markdown Converter](https://elysiatools.com/en/tools/excel-to-markdown): Convert Excel file to Markdown table format, extracting data from the first worksheet
- [HTML to Markdown Converter](https://elysiatools.com/en/tools/html-to-markdown): Convert HTML content to Markdown format with customizable options using Turndown
- [JSON to Markdown](https://elysiatools.com/en/tools/json-to-markdown): Convert JSON data to Markdown format
- [Markdown to CSV](https://elysiatools.com/en/tools/markdown-to-csv): Convert Markdown table data to CSV format
- [Markdown to JSON](https://elysiatools.com/en/tools/markdown-to-json): Convert Markdown data to JSON format
- [Markdown to Plain Text](https://elysiatools.com/en/tools/markdown-to-plain-text): Convert Markdown formatted text to plain text by removing all Markdown syntax and formatting
- [XLSX Markdown Table Exporter](https://elysiatools.com/en/tools/xlsx-markdown-table-exporter): Convert a selected Excel range or whole sheet into Markdown table format

## Samples

- [Markdown Samples](https://elysiatools.com/en/samples/markdown-samples): Markdown format examples from simple to complex document structures
- [Markdown Viewer Samples](https://elysiatools.com/en/samples/markdown-viewer-samples): Sample Markdown files for README preview, documentation rendering, and rich-text markup tests
- [Markdown Slide Deck Samples](https://elysiatools.com/en/samples/md-slide-deck-to-pdf): Remark/Marp style Markdown slide decks for testing PDF export layouts
- [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10