DiffCheck

Markdown to HTML Converter Online

Convert Markdown to HTML instantly. Preview rendered output side by side.

MARKDOWN INPUT

What Is a Markdown to HTML Converter?

A Markdown to HTML converter transforms Markdown syntax into equivalent HTML markup. Markdown is a lightweight plain-text format used in README files, documentation, blog posts, and content management systems. This online Markdown to HTML converter processes your Markdown in real time and outputs clean HTML. You can view the raw HTML source or switch to the rendered preview tab to see how the output looks in a browser. All conversion runs locally in your browser — no data is sent to a server.

How to Use Markdown to HTML Converter

  1. Paste or type your Markdown into the Input area on the left.
  2. The HTML output appears instantly on the right in the Source tab.
  3. Click Preview to see the rendered HTML output.
  4. Click Copy to copy the HTML to your clipboard.
  5. Use Load Sample to see an example with common Markdown elements.

Supported Markdown Syntax

  • Headings — # H1 through ###### H6
  • Bold — **text** or __text__
  • Italic — *text* or _text_
  • Bold + Italic — ***text***
  • Strikethrough — ~~text~~
  • Inline code — `code`
  • Fenced code blocks — triple backticks with optional language
  • Unordered lists — lines starting with -, *, or +
  • Ordered lists — lines starting with 1., 2., etc.
  • Blockquotes — lines starting with >
  • Horizontal rules — three or more ---
  • Links — [text](url)
  • Images — ![alt](url)

FAQ

What Markdown syntax is supported?

This converter supports headings, bold, italic, bold+italic, strikethrough, inline code, fenced code blocks, unordered and ordered lists, blockquotes, horizontal rules, links, and images.

Can I preview the rendered HTML?

Yes. Click the "Preview" tab in the output panel to see the rendered HTML output. Click "Source" to switch back to the raw HTML code.

Is my Markdown sent to a server?

No. All conversion happens entirely in your browser using JavaScript. No data is sent to any server.

What is the difference between Markdown and HTML?

Markdown is a lightweight markup language designed to be readable as plain text. HTML is the standard markup language for web pages. Markdown is often converted to HTML for display in browsers, documentation sites, and content management systems.