Markdown to HTML Converter
Convert Markdown to clean HTML instantly in your browser. Supports GitHub Flavored Markdown including tables, task lists, and fenced code blocks. No account needed — works instantly in your browser.
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 — plain text symbols like # for headings and **text** for bold — into the equivalent HTML markup that web browsers render. Markdown was invented by John Gruber in 2004 with the goal of being readable in raw form while producing clean HTML output; today it is the standard writing format for GitHub, Notion, Reddit, and most modern CMSes.
This converter uses Marked.js with GitHub Flavored Markdown (GFM) enabled, running entirely in your browser. GFM extends standard Markdown with tables, task lists, strikethrough, and fenced code blocks — the same extensions GitHub uses. All HTML output is passed through DOMPurify before preview rendering to strip any embedded JavaScript, making it safe to convert untrusted content.
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 — all conversion runs in your browser using Marked.js; your content never touches a server.
- 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 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, completely free. The converter runs entirely in your browser using Marked.js — no server, no account, no character limits. Your content stays private on your device and is never transmitted anywhere.
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.
The tools and calculators provided on The Simple Toolbox are intended for educational and informational purposes only. They do not constitute financial, legal, tax, or professional advice. While we strive to keep calculations accurate, numbers are based on user inputs and standard assumptions that may not apply to your specific situation. Always consult with a certified professional (such as a CPA, financial advisor, or attorney) before making significant financial or business decisions.
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