Markdown vs HTML: What Is the Difference?

Markdown actually turns into HTML most of the time — so they're not really rivals, more like a simpler layer sitting on top of a more detailed one.

The same heading, two ways

Markdown:
# My Heading

HTML:
<h1>My Heading</h1>

Same result once rendered. The Markdown version took four characters to write; the HTML version took nine, plus a closing tag to remember.

What Markdown is good at

Writing. It gets out of the way while you're typing, since the syntax is minimal and mostly intuitive even before you learn it. It's the natural choice for README files, notes, blog drafts, documentation, and anything a person is going to type by hand regularly.

What HTML is good at

Precision and structure that Markdown was never designed to express — nested layout divs, specific styling hooks, forms, embedded media with attributes, accessibility annotations, and anything a browser needs fine-grained control over. Web pages are built in HTML (often generated from a template, a CMS, or, yes, converted up from Markdown) because a browser needs that level of explicit structure.

Can you mix them?

Many Markdown processors technically allow raw HTML inside a Markdown file for the rare case you need something Markdown itself can't express — a specific class name, for instance. The converter on this site runs in safe mode instead, which strips embedded HTML for security reasons, so if that's something you rely on, a general-purpose Markdown editor without safe mode is the better fit for that specific need.

The practical takeaway

Write in Markdown when a human is doing the writing. Reach for HTML (or let a converter generate it) when the destination is a webpage that needs exact control. Most workflows actually use both — Markdown while drafting, HTML once it's time to publish.

Frequently asked questions

Is Markdown a replacement for HTML?

Not really — it's a shorthand that converts into HTML. Browsers still render HTML; Markdown is just a faster way to produce simple HTML by hand.

How this guide was prepared: Focuses on practical, everyday differences rather than a full technical specification comparison.