markdown-callouts
Markdown extension: a classier syntax for admonitions
Decision gist · record as of 2026-08-14
Yes. Low install friction, no security issues, actively maintained, and solves a real readability problem for Markdown documentation. Useful if you write docs in Markdown and want cleaner admonition syntax; skip it if you don't use admonitions or prefer the standard syntax.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires markdown package; intended for use with Markdown processors or static site generators like MkDocs.
- Low friction: pure Python wheel with a single dependency on markdown.
- Actively maintained with recent commits and no known vulnerabilities.
License · maintenance · safety
permissive license (permissive) — MIT license (permissive): you can use, modify, and distribute this package freely with minimal restrictions.
last release 2024-01-22 (935 days) · last repo commit 2026-04-17 · 45 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 126,084 downloads/mo, #11,790 on PyPI
Alternatives
Verify before relying
pip install markdown-callouts
In mkdocs.yml:
markdown_extensions:
- callouts
Then in Markdown:
NOTE: Your highlighted text here.- Whether the package works with markdown versions older than the current release.
- Performance characteristics when processing large documents with many callouts.
What it is and what it does
markdown-callouts is a Python-Markdown extension that provides a simpler, more readable syntax for creating admonition blocks (callouts) compared to the standard admonition extension. Instead of the verbose `!!!` syntax, it lets you write `NOTE:` or `>? NOTE:` at the start of a paragraph to create highlighted, set-apart blocks. The extension produces the same rendered output as the admonition extension but with syntax that reads more naturally and degrades gracefully in vanilla Markdown renderers like GitHub's—showing the text with a clear prefix rather than disappearing or rendering as raw markup.
It's designed for documentation sites using MkDocs and themes like mkdocs-material that support admonitions. The package supports collapsible blocks via the `>?` prefix syntax. With a single runtime dependency (markdown) and support for Python 3.8 through 3.12, it integrates straightforwardly into existing Markdown workflows.
Use it for
- Add visually distinct NOTE, WARNING, or INFO blocks to MkDocs documentation without verbose syntax.
- Create collapsible admonition blocks in documentation that expand on user interaction.
- Write Markdown that reads naturally in both rendered HTML and raw text (GitHub preview).
- Migrate from admonition syntax to a more readable block syntax in existing Markdown projects.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Low install friction, no security issues, actively maintained, and solves a real readability problem for Markdown documentation. Useful if you write docs in Markdown and want cleaner admonition syntax; skip it if you don't use admonitions or prefer the standard syntax.
Install
markdown-callouts on PyPI
Before you install
Low friction: pure Python wheel with a single dependency on markdown. Actively maintained with recent commits and no known vulnerabilities.
Requires markdown package; intended for use with Markdown processors or static site generators like MkDocs.
License in practice
MIT license (permissive): you can use, modify, and distribute this package freely with minimal restrictions.
Quickstart
pip install markdown-callouts
In mkdocs.yml:
markdown_extensions:
- callouts
Then in Markdown:
NOTE: Your highlighted text here.Verify before relying
- Whether the package works with markdown versions older than the current release.
- Performance characteristics when processing large documents with many callouts.
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagemarkdown |
| Maintenance | Actively maintained 935 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 126,084 / month, #11,790 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaEnvironment :: Web EnvironmentIntended Audience :: Information TechnologyLicense :: OSI Approved :: MIT LicenseOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Topic :: DocumentationTopic :: Software Development :: DocumentationTopic :: Text Processing :: Markup :: MarkdownTyping :: Typed |
Evidence: markdown_callouts-0.4.0-py3-none-any.whl
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See also mkdocs-github-admonitions-plugin · mdformat-mkdocs · mdformat-gfm-alerts · markdown-exec · mkdocs-video · mkdocs-material · pymdown-extensions · mkdocs-click · sphinx-togglebutton · mdformat-black