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Markdown to HTML

Convert Markdown to sanitized HTML online with reliable rendering for headings, lists, tables, links, and embedded code blocks.

Input
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Output

Output will appear here...

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What is Markdown to HTML

Last reviewed:

Markdown is a lightweight markup language with plain-text formatting syntax, widely used for READMEs, documentation, and content-first publishing.

Markdown to HTML is an online converter that transforms Markdown source (CommonMark and GitHub Flavored Markdown) into clean, sanitized HTML you can paste straight into a README, static site, CMS, newsletter, or email template.

It supports headings, lists, tables, task lists, fenced code blocks, blockquotes, inline formatting, and links, and strips unsafe constructs such as inline scripts and `javascript:` URLs so the output is XSS-safe out of the box.

Why use it

  • Render READMEs, changelogs, and release notes as production-ready HTML without running a build.
  • Prepare Markdown drafts for blogs, CMS fields, or HTML email where the target doesn't accept raw Markdown.
  • Migrate docs from Markdown (Jekyll, Hugo, Docusaurus, MkDocs) to a system that expects HTML.
  • Preview how GitHub Flavored Markdown tables, task lists, and fenced code will actually render.
  • Keep the conversion in the browser so private notes and drafts never leave your device.

Features

  • CommonMark and GitHub Flavored Markdown support
  • XSS-safe HTML output with unsafe tags and URLs stripped
  • Tables, task lists, and fenced code blocks
  • Copy or download the rendered HTML
  • Runs entirely in the browser — no uploads

How to use Markdown to HTML

  1. Paste your Markdown. Paste Markdown source into the input panel, or drop in a README, release notes, or blog draft.
  2. Review the HTML output. The sanitized HTML updates automatically so you can confirm headings, lists, tables, and code blocks render the way you expect.
  3. Copy or download the result. Copy the HTML to paste into your CMS, blog, or email template, or download it as an .html file.

Example (before/after)

Markdown input

# Release Notes

Ship faster with the **new** converter.

- Tables, task lists, and fenced code
- [Docs](https://example.com/docs)

```js
console.log("hello");
```

Sanitized HTML output

<h1>Release Notes</h1>
<p>Ship faster with the <strong>new</strong> converter.</p>
<ul>
  <li>Tables, task lists, and fenced code</li>
  <li><a href="https://example.com/docs">Docs</a></li>
</ul>
<pre><code class="language-js">console.log("hello");
</code></pre>

Common errors

Unclosed fenced code block

A missing closing ``` causes the rest of the document to render as code, so headings and lists disappear.

Fix: Make sure every opening ``` has a matching closing ``` on its own line.

Tables without a header separator

GitHub Flavored Markdown tables require a `| --- | --- |` separator row directly under the headers.

Fix: Add the separator row under the header so the table is recognized and rendered.

Unsafe HTML stripped from output

Inline `<script>` tags, event handlers, and `javascript:` URLs are removed so the output is XSS-safe.

Fix: Move interactive behavior out of the Markdown source and into the destination template.

Raw HTML not rendering as expected

Some embedded HTML is preserved, but attributes that look unsafe are dropped during sanitization.

Fix: Use plain Markdown where possible and keep embedded HTML limited to safe structural tags.

FAQ

Does this Markdown to HTML converter support GitHub Flavored Markdown?

Yes. GFM features such as tables, task lists, strikethrough, autolinks, and fenced code blocks are supported alongside standard CommonMark syntax.

Is my Markdown uploaded to a server?

No. The converter runs in the browser, so pasted Markdown stays on your device while you work.

Does the output sanitize unsafe HTML?

Yes. Inline scripts, event handlers, and `javascript:` URLs are stripped so the HTML is safe to paste into blogs, CMS fields, and email templates.

Can I convert Markdown tables to HTML tables?

Yes. Include a GFM-style header separator row and the converter will emit a full `<table>` with `<thead>` and `<tbody>` sections.

How is this different from the Markdown Beautifier?

The beautifier reformats Markdown so it stays Markdown, while Markdown to HTML converts the source into HTML ready to embed in a webpage or email.

Related tools

Keep the Markdown and HTML workflow moving with converters, formatters, and editors that pair well with this tool. You can also browse the full Data Converters category for more options.