Markdown to HTML Converter
Convert Markdown to clean HTML with GitHub Flavored Markdown, live preview, and copy-ready output.
Markdown to HTML Converter
Write Markdown on the left, get secure and clean HTML on the right.
What is a Markdown to HTML converter?
A Markdown to HTML converter is a tool that translates Markdown syntax into HTML markup with GitHub Flavored Markdown — tables, task lists, strikethrough, and fenced code blocks. Paste Markdown, preview, and copy the HTML — this page uses Marked.js and DOMPurify in this tab.
How to Use the Markdown to HTML Converter
- Paste or type your Markdown — enter your Markdown text in the left panel; the converter processes it in real time as you type.
- Preview the rendered HTML — the right panel shows a live rendered preview so you can confirm formatting before exporting.
- Inspect the raw HTML output — switch to the HTML tab to see the exact markup the converter generated, including all tags.
- Copy or export — click the copy button to grab the HTML string, or use the export function to download an .html file.
Who Is This For?
- Developers building content pipelines who need to convert Markdown files to HTML strings for APIs, databases, or server-side templates.
- Technical writers publishing to multiple platforms who draft documentation in Markdown but need HTML output for legacy CMSes or email systems that don't accept raw Markdown.
- Bloggers who write in Markdown in editors like Obsidian or Typora and publish to HTML-based CMS platforms where the Markdown doesn't render natively.
Key Benefits
- Privacy. Tool inputs stay in the browser. Conversion uses Marked.js in this tab.
- Free — no subscription, no account, no character limits.
- No account required — open the page and start converting immediately.
- GitHub Flavored Markdown support — tables, task lists, strikethrough, and fenced code blocks all convert correctly.
Common Markdown to HTML Mistakes
- Not sanitizing HTML output: Markdown allows raw HTML inline. If you convert untrusted Markdown without sanitizing the output, embedded
<script>tags will execute in the browser. Always run output through a sanitizer like DOMPurify before rendering. - Inconsistent heading hierarchy: Jumping from
#(h1) directly to###(h3) breaks accessibility and screen reader navigation. It also causes issues with automatically generated tables of contents. - Forgetting to escape literal asterisks and brackets: To display a literal asterisk or bracket in Markdown, prefix it with a backslash:
\*and\[. Unescaped, they trigger bold, italic, or link syntax unexpectedly. - Mixing HTML and Markdown unpredictably: When you embed raw HTML inside a Markdown document, Markdown processors stop parsing Markdown inside that HTML block. You cannot use
**bold**inside a<div>and expect it to render as bold.
If your HTML output contains special characters that need escaping before being placed in another context, the HTML entity encoder handles that step. To compare two versions of a Markdown document before and after edits, use the diff checker.
Further reading: CommonMark Specification (commonmark.org)
Worked Example: README.md to HTML Snippet
A developer wants to embed a formatted README on a product landing page. The Markdown source:
## Installation
Run the following command:
```bash
npm install my-package
```
**Requirements:** Node.js 18+ and npm 9+.After converting, the HTML output:
<h2>Installation</h2>
<p>Run the following command:</p>
<pre><code class="language-bash">npm install my-package</code></pre>
<p><strong>Requirements:</strong> Node.js 18+ and npm 9+.</p>The fenced code block produces a <pre><code class="language-bash"> element — ready for Prism.js or Highlight.js to add syntax colouring without any further changes.
How This Converter Compares
| Feature | This Tool | Dillinger.io | Pandoc (CLI) |
|---|---|---|---|
| Runs in this tab | ✓ | ✗ | ✓ local |
| Live preview | ✓ | ✓ | ✗ |
| Raw HTML tab | ✓ | Partial | ✓ (stdout) |
| No installation | ✓ | ✓ | ✗ (install needed) |
| XSS-safe preview (DOMPurify) | ✓ | ✗ | ✓ |
Last updated: April 2026. Uses Marked.js with GitHub Flavored Markdown (GFM) and DOMPurify for safe preview rendering.
Common Use Cases
Converting a README.md to an HTML snippet for embedding on a product landing page or documentation site. Preparing email newsletter content drafted in Markdown for an HTML email template. Migrating blog posts from a Markdown-based static site (like Jekyll or Hugo) to a legacy WordPress or Drupal installation that stores and renders raw HTML. Testing how Markdown renders before committing documentation to a repository.
Frequently Asked Questions
What is Markdown? ↓
Markdown is a lightweight markup language that uses plain text symbols to format content — **bold** becomes bold, # Heading becomes an <h1>. Invented by John Gruber in 2004, it is now the standard writing format for GitHub, Notion, Reddit, and most modern CMSes because it is readable in raw form and converts cleanly to HTML.
Is this Markdown to HTML converter free? ↓
Yes. This Markdown to HTML Converter is free to use now — ads are not live yet — with no account required. It runs in this tab. Tool inputs stay in your browser. The site uses aggregate Google Analytics.
When do I need to convert Markdown to HTML? ↓
When publishing to systems that only accept HTML: email newsletters, legacy CMSes, raw HTML files, or API endpoints that expect HTML strings. Any time you write in Markdown but your destination system renders HTML — such as inserting content into a database or sending it to a REST API — you need a converter.
Does this converter support GitHub Flavored Markdown? ↓
Yes. GitHub Flavored Markdown (GFM) extends standard Markdown with tables, task lists, strikethrough, and fenced code blocks. This converter uses Marked.js with GFM enabled, so all of those extensions convert correctly to their HTML equivalents — the same way GitHub renders them.
Does this support syntax highlighting in code blocks? ↓
The converter correctly wraps code blocks in standard <pre><code> HTML. To colorize the code by language, add a client-side library like Prism.js or Highlight.js to your site — they attach to the existing <pre><code> elements automatically without any changes to the markup.
Will malicious JavaScript in the Markdown execute? ↓
No. All generated HTML is passed through DOMPurify before rendering in the preview panel. Any <script> tags or JavaScript event handlers embedded in the Markdown are stripped before the browser can execute them, making the preview safe even when converting untrusted content.
This tool is provided for informational and educational purposes only. Results are not a substitute for professional advice.
Free Tools Alert
Get new tools, templates, and calculators in your inbox. No fake subscriber counts.
No spam. One-click unsubscribe.