{"id":8648,"library":"slackify-markdown","title":"Slackify Markdown","description":"A Python library that converts standard Markdown into Slack-compatible formatting (mrkdwn). It addresses the inconsistencies between standard Markdown and Slack's unique syntax, making it easy to display richly-formatted messages in Slack. The library is actively maintained with regular bug fixes and improvements.","status":"active","version":"0.2.2","language":"en","source_language":"en","source_url":"https://github.com/thesmallstar/slackify-markdown-python","tags":["markdown","slack","formatting","conversion","mrkdwn"],"install":[{"cmd":"pip install slackify-markdown","lang":"bash","label":"Install latest version"}],"dependencies":[{"reason":"Core parsing engine for Markdown to HTML conversion before slackification.","package":"markdown-it-py","optional":false}],"imports":[{"note":"The primary function for converting Markdown to Slack mrkdwn.","symbol":"slackify_markdown","correct":"from slackify_markdown import slackify_markdown"}],"quickstart":{"code":"from slackify_markdown import slackify_markdown\n\nmarkdown_text = \"\"\"\n# Welcome to the **team**!\n\nThis is a *test* message with a [link](https://example.com).\n\n- Item 1\n- Item 2\n\n```python\nprint(\"Hello, Slack!\")\n```\n\"\"\"\n\nslack_output = slackify_markdown(markdown_text)\nprint(slack_output)\n# Expected output:\n# *Welcome to the team!*\n# This is *test* message with a <https://example.com|link>.\n# • Item 1\n# • Item 2\n# ```python\\nprint(\"Hello, Slack!\")\\n```","lang":"python","description":"This quickstart demonstrates how to import the `slackify_markdown` function and convert a multi-line Markdown string into Slack-compatible formatting (mrkdwn)."},"warnings":[{"fix":"Upgrade to `slackify-markdown>=0.2.1`. Review existing Slack messages to ensure the corrected formatting is as expected.","message":"Formatting of bold text within headings has been fixed in v0.2.1. If your application previously relied on the malformed output (e.g., `**Step 1*: Description*` instead of `*Step 1: Description*`), this change will alter the rendered output.","severity":"breaking","affected_versions":"<0.2.1"},{"fix":"Upgrade to `slackify-markdown>=0.2.2` to ensure correct behavior in multi-threaded environments. This version uses an instance variable for heading state, resolving the issue.","message":"Versions prior to v0.2.2 had a thread-safety issue where internal heading state was shared across instances. This could lead to incorrect output when `slackify_markdown` was called concurrently from multiple threads.","severity":"gotcha","affected_versions":"<0.2.2"},{"fix":"Always pass standard Markdown through `slackify_markdown` to ensure proper rendering in Slack. Do not expect raw standard Markdown to render correctly.","message":"Slack's `mrkdwn` is a specific dialect and not fully compatible with standard Markdown. For instance, Slack uses `*bold*` for bold and `_italic_` for italics in some contexts, and `[text](url)` becomes `<url|text>`. This library handles these conversions, but direct use of standard Markdown in Slack without conversion will often break.","severity":"gotcha","affected_versions":"All versions"}],"env_vars":null,"last_verified":"2026-04-16T00:00:00.000Z","next_check":"2026-07-15T00:00:00.000Z","problems":[{"fix":"Upgrade the library to version `0.2.1` or higher using `pip install --upgrade slackify-markdown`.","cause":"A bug in `slackify-markdown` versions prior to `0.2.1` incorrectly processed bold formatting within headings, leading to malformed Slack output.","error":"Markdown heading with bold text renders incorrectly in Slack (e.g., `### **Step 1**: Title` results in `**Step 1*: Title*`)"},{"fix":"Upgrade the library to version `0.2.2` or higher using `pip install --upgrade slackify-markdown` to ensure thread-safe operation.","cause":"Versions of `slackify-markdown` prior to `0.2.2` contained a thread-safety bug where a shared class variable for heading state could be corrupted by concurrent calls.","error":"Inconsistent or corrupted Slack output when `slackify_markdown` is used in a multi-threaded application (e.g., different threads produce wrong heading formatting)."},{"fix":"Install the library using `pip install slackify-markdown`. If you are in a virtual environment, ensure it is activated before installation.","cause":"The `slackify-markdown` library is not installed in the active Python environment or is not accessible on the Python path.","error":"ModuleNotFoundError: No module named 'slackify_markdown'"}]}