Markdown to HTML Converter — DecodeTool

Markdown to HTML Converter

Write or paste Markdown and get clean, live-rendered HTML — with a sandboxed preview so nothing you paste can run on the page.

GFM SUPPORTED
Markdown Input0 chars
Live Preview0 chars
Markdown is converted entirely in your browser — nothing you type is sent to a server.

Features of Markdown to HTML Converter

  • Live split-view preview — see your rendered HTML update instantly as you type or paste Markdown, no button to click
  • GitHub-Flavored Markdown support — tables, fenced code blocks, blockquotes, nested lists, and links all render correctly, not just basic formatting
  • Two output views — switch between a visual Preview and the raw generated HTML Source with one click
  • Sandboxed preview — the live preview renders inside an isolated frame, so pasted content can never execute a script on the page
  • One-click copy — copy the generated HTML straight to your clipboard for pasting into a CMS, email, or codebase
  • Download as a complete file — export a standalone .html file with clean default styling already applied, ready to open in a browser
  • Live character counts — track both your Markdown input length and the resulting HTML output length
  • 100% private — all conversion happens locally in your browser; nothing you write is sent to a server

How to Use the Markdown to HTML Converter

  1. Write or paste your Markdown. Type directly into the left panel, or paste in Markdown from a README, notes app, or documentation file.
  2. Watch the live preview. The right panel updates automatically, showing exactly how your content will look once converted.
  3. Check the generated HTML. Click HTML Source in the toggle to see the raw markup instead of the rendered preview.
  4. Copy or download. Use Copy HTML to grab the markup for pasting elsewhere, or Download .html to save a complete, styled standalone file.
  5. Keep editing. The conversion updates live, so you can keep refining your Markdown and immediately see the result without re-running anything.

Tip: If you’re pasting this HTML into an existing website or CMS, you’ll usually want just the HTML fragment (the Copy HTML button), not the full downloaded file — the downloaded .html file includes its own <html>, <head>, and basic styling, which is meant for standalone use rather than embedding inside another page’s layout.

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