Why Markdown caught on
Unlike HTML tags, Markdown is designed to stay readable as plain text even before it is rendered, and it is lightweight enough to write without any special editor. That combination is a big part of why it became a near-universal standard across GitHub, documentation tools, chat apps, and note-taking apps.
Markdown is not a perfectly uniform standard
The base specification is intentionally minimal, so many platforms layer on their own extensions β tables, checkbox task lists, strikethrough, footnotes β under names like GitHub Flavored Markdown. A document written for one platform's flavor can render slightly differently, or not fully, on a simpler parser elsewhere.
Frequently Asked Questions
Does every app that supports Markdown render it exactly the same way?
No. The core syntax works almost everywhere, but any extended feature β tables, footnotes, and similar additions β depends entirely on which flavor and parser the specific platform uses.
Can you mix raw HTML inside Markdown?
Many Markdown implementations let raw HTML tags pass through unrendered by the Markdown parser, which is useful for things Markdown cannot do natively, like a manual <br> line break. This is not guaranteed everywhere, though β some platforms disable raw HTML entirely for security reasons.