Markdown vs HTML: Which Should You Use?

Core difference

Markdown is a lightweight text format. Authors mark headings, lists, links, emphasis, code, and quotations with readable punctuation. A Markdown processor parses that source and produces another format, commonly HTML. The exact result depends on the processor and its enabled extensions. CommonMark defines a standardized core syntax, while many products add tables, task lists, footnotes, or special directives. HTML is a markup language used to describe document structure on the web. Tags identify elements such as headings, paragraphs, links, lists, images, tables, and sections. Attributes provide additional information, such as a link destination or an image's alternative text. Browsers interpret HTML directly, although scripts and stylesheets often affect the final presentation.

When Markdown fits

Choose Markdown for README files, changelogs, internal notes, issue descriptions, API guides, and documentation stored with source code. Its compact syntax keeps reviews focused on content. Git can show meaningful line changes, and contributors can edit files without learning every HTML element. Markdown also works well when a publishing pipeline controls the final theme. The pipeline can apply navigation, syntax highlighting, search metadata, and responsive styles after conversion. However, inspect the renderer before relying on extensions. A table or footnote that works in one application may appear as plain text in another. Define a supported dialect for team projects.

When HTML fits

Use HTML when you need precise structure or features outside your Markdown dialect. Examples include custom data attributes, complex tables, embedded media, interactive controls, and carefully nested sections. HTML also lets authors place semantic elements directly in the source, which can help when the output must meet a specific integration contract. HTML requires more syntax and more attention to escaping. Invalid nesting, missing attributes, and unsafe user input can create rendering or security problems. A Markdown converter may allow limited raw HTML, or it may remove it. Test the complete conversion path, including sanitization, CSS, links, images, and accessibility checks. Markdown is not a replacement for HTML in every publishing system.

Working example

The same short document uses different authoring syntax.

# Setup

Install the package with `npm install example`.

[Project site](https://example.com)

<h1>Setup</h1>
<p>Install the package with <code>npm install example</code>.</p>
<p><a href="https://example.com">Project site</a></p>

A converter produced the HTML output. The exact output may differ because processors handle identifiers, whitespace, and raw HTML differently.