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FeatureFactory
Free tool

Markdown Converter

Bidirectional Markdown to HTML and HTML to Markdown converter. Live rendered preview. Runs entirely in your browser - nothing leaves the page.

Markdown HTML

Markdown input

HTML output

<h1>Markdown Converter</h1>
<p>Convert <strong>Markdown to HTML</strong> or <em>HTML to Markdown</em> instantly, right in your browser.</p>
<h2>Features</h2>
<ul>
<li>Bidirectional conversion</li>
<li>Live rendered preview</li>
<li>Copy output with one click</li>
<li>No server round-trip, no data leaves your browser</li>
</ul>
<h2>Usage</h2>
<pre><code>
# Before shipping: validate your docs

md-to-html --input README.md --output index.html

</code></pre>
<blockquote><p>Tip: use the swap button to flip directions without losing your input.</p></blockquote>
<p><a href="https://commonmark.org">Learn more about Markdown</a></p>

Rendered preview

Markdown Converter

Convert Markdown to HTML or HTML to Markdown instantly, right in your browser.

Features

  • Bidirectional conversion
  • Live rendered preview
  • Copy output with one click
  • No server round-trip, no data leaves your browser

Usage


# Before shipping: validate your docs

md-to-html --input README.md --output index.html

Tip: use the swap button to flip directions without losing your input.

Learn more about Markdown

Markdown and HTML, back and forth

Markdown is the authoring format; HTML is what browsers actually render. Switching between them comes up constantly - pasting docs into a CMS, extracting content from a scraped page, prepping copy for a static site generator, or cleaning up AI-generated content before it hits production. Most converters require a server round-trip or a bloated client library. This one runs a lightweight hand-rolled parser in your browser tab, converting as you type.

The Markdown to HTML path supports the full common subset: headings h1-h6, bold, italic, inline code, fenced code blocks, unordered and ordered lists, blockquotes, links, images, horizontal rules, and GFM-style pipe tables. The live rendered preview shows exactly what a browser will display, using the same output HTML, so there are no surprises when you paste it into your project.

The HTML to Markdown path uses the browser's native DOMParser to build a real element tree, then walks it recursively. That means malformed or deeply nested HTML is handled gracefully - the same way a real browser would interpret it - rather than by brittle regex substitutions.

For more developer utilities, try the regex tester, cron expression builder, or gitignore generator, or browse the full tools directory.

Frequently asked questions

No. All conversion runs locally in your browser using the JavaScript DOM and a hand-rolled parser. Nothing is uploaded, logged, or stored.

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