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Markdown to HTML Converter

Developer Tools

Convert Markdown into clean, sanitized HTML with a live preview pane. Supports GitHub-flavored extras: tables, code blocks, and task lists.

Runs entirely in your browser
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About Markdown to HTML Converter

The Markdown to HTML Converter renders any Markdown text into valid HTML in real time. It's built on `marked` for the parsing and `DOMPurify` for sanitization — so even if your Markdown contains raw HTML or pasted-in scripts, the output is XSS-safe.

Use this when you need to embed Markdown content into a CMS that only accepts HTML, when you're prototyping a Markdown editor, or when you just want a quick preview of how a README will render. The Preview tab shows the visual output and the HTML source tab gives you the raw HTML string for copying. Everything happens in your browser; no rendering server, no telemetry, no data leaving your device.

How to use

  1. 1

    Paste Markdown

    Drop your Markdown source into the left editor. Rendering happens as you type.

  2. 2

    Preview or grab the HTML

    Use the Preview tab to see the rendered output, or switch to HTML source to get the raw markup.

  3. 3

    Copy or download the HTML

    Use the Copy or Download (.html) button to save the sanitized HTML.

Examples

Headings, lists, and links

Basic Markdown structures map cleanly to semantic HTML.

Input

# Hello

A **bold** word and a [link](https://example.com).

- one
- two

Output

<h1>Hello</h1>
<p>A <strong>bold</strong> word and a <a href="https://example.com">link</a>.</p>
<ul>
<li>one</li>
<li>two</li>
</ul>

GFM table

Tables work — they become semantic `<table>` markup.

Input

| Tool | Done |
|------|------|
| Formatter | ✅ |
| Converter | ✅ |

Output

<table>
<thead>
<tr><th>Tool</th><th>Done</th></tr>
</thead>
<tbody>
<tr><td>Formatter</td><td>✅</td></tr>
<tr><td>Converter</td><td>✅</td></tr>
</tbody>
</table>

Frequently asked questions

Is the HTML safe to insert into my page?+

Yes. The output is sanitized with DOMPurify, which strips `<script>` tags, inline `on*` handlers, `javascript:` URLs, and other XSS vectors. You can paste it into a `dangerouslySetInnerHTML` block with reasonable safety.

Does it support GitHub Flavored Markdown?+

Yes — GFM is enabled by default, which includes tables, autolinks, strikethrough, and fenced code blocks.

Why does my custom HTML get filtered?+

DOMPurify removes anything it considers risky. If you trust the input and want full HTML passthrough, use a separate renderer; this converter prioritizes safety.

Can I theme the preview?+

The preview uses the site's typography styles. The exported HTML is unstyled; you can apply your own CSS or Tailwind's prose class.

Is my Markdown sent anywhere?+

No. Parsing, rendering, and sanitization all happen locally.

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