Markdown Extensions Guide: Admonitions, Diagrams, Math, and Footnotes
Extend standard Markdown with admonitions, LaTeX math via KaTeX, Mermaid diagrams, definition lists, and footnotes in popular renderers.
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Tags: markdown, extensions, documentation
Markdown Extensions Guide: Admonitions, Diagrams, Math, and Footnotes CommonMark is intentionally minimal. It defines the core elements — paragraphs, headings, lists, code, links, emphasis — and stops there. Every feature beyond that is an extension, and the landscape of extensions is fragmented: each platform and tool picks its own subset. This guide covers the most widely supported Markdown extensions, what they add, how they're implemented, and which platforms support them. Admonitions and Callouts Admonitions are styled callout boxes that highlight notes, warnings, tips, and other semantic categories. GitHub Alerts (GFM) These render with colored boxes and icons on GitHub. Other renderers see them as plain blockquotes unless they have a plugin. Docusaurus Admonitions Docusaurus uses…
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