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Markdown to HTML Preview

Convert Markdown to HTML in real time with a live preview. Write Markdown and instantly see the rendered output and HTML source.

Your data never leaves your browser Available via MCP

Preview will appear here...
Next steps
HTML Beautifier → HTML Entities → Diff Checker → Word Counter →

How to Use

  1. Type or paste your Markdown into the left panel.
  2. The rendered preview updates in real time on the right.
  3. Click HTML Source to see the generated HTML code.
  4. Click Copy HTML to copy the output to your clipboard.
  5. Use the Sample button to load example Markdown.

What Is Markdown?

Markdown is a lightweight markup language created by John Gruber in 2004. It lets you write formatted content using plain text syntax that's easy to read and write. Markdown files use the .md or .markdown extension and are rendered as HTML by parsers.

Common Markdown Syntax

  • Headings — # H1, ## H2, ### H3 through ###### H6
  • Bold — **bold text** or __bold text__
  • Italic — *italic text* or _italic text_
  • Links — [text](url)
  • Images — ![alt](url)
  • Code — backticks for inline, triple backticks for blocks
  • Lists — - or * for unordered, 1. for ordered
  • Blockquotes — > quoted text

Where Markdown Is Used

Markdown is the standard for GitHub README files, documentation sites, blog platforms like Dev.to and Hashnode, static site generators (Jekyll, Hugo, Astro, Gatsby), note-taking apps (Obsidian, Notion), and messaging platforms (Slack, Discord). Understanding Markdown is an essential developer skill.

Related Tools

Format your HTML output with the HTML Beautifier. Encode special characters with the HTML Entity Encoder. Format JSON data embedded in your Markdown with the JSON Formatter. Minify your CSS with the CSS Minifier. Compare two Markdown documents with the Diff Checker.

Frequently Asked Questions

What Markdown syntax is supported?
This tool supports headings (# through ######), bold (**text**), italic (*text*), strikethrough (~~text~~), links, images, code blocks, inline code, blockquotes, ordered and unordered lists, and horizontal rules.
Can I see the raw HTML output?
Yes. Click the "HTML Source" button to toggle between the rendered preview and the raw HTML output. You can copy the HTML with the "Copy HTML" button.
Does this tool use any external libraries?
No. The Markdown parser is built entirely with native JavaScript — no external dependencies are loaded. This keeps the tool fast and lightweight.
Is my data safe?
Yes. All Markdown parsing and HTML rendering happens entirely in your browser. No data is sent to any server.
What is Markdown used for?
Markdown is a lightweight markup language used for formatting plain text. It is widely used in README files, documentation, blogs, forums, messaging apps, and static site generators like Jekyll, Hugo, and Astro.

Code Examples

Learn how to use this tool programmatically in your favorite language.

Render Markdown to HTML

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Use this tool from AI agents. The CodeTidy MCP Server lets Claude, Cursor, and other AI agents use this tool and 46 others directly. One command: npx @codetidy/mcp

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