Markdown to HTML Converter

About this tool

Markdown is a lightweight markup language created by John Gruber in 2004. It uses plain-text syntax—asterisks for bold, hyphens for lists, hash signs for headings—that is easy to write and read even before rendering. Markdown is the standard writing format for README files on GitHub, documentation sites, static site generators (Jekyll, Hugo, Gatsby), note-taking apps (Obsidian, Notion), and comment systems (Reddit, Stack Overflow). This tool converts Markdown to HTML in real time: use the Preview tab to see exactly how your text will render, or switch to the HTML tab to get the raw HTML output ready to paste into a CMS, email template, or static site. It supports GitHub Flavored Markdown (GFM): tables, fenced code blocks, task lists, and strikethrough.

How to use

1. 1Type or paste Markdown into the Source panel — the output updates in real time.
2. 2Switch to the "Preview" tab to see the rendered result, or the "HTML" tab to see the raw HTML markup.
3. 3Click "Copy HTML" at any time to copy the converted HTML to your clipboard.
4. 4The output is sanitized with DOMPurify — embedded scripts and event handlers are removed.

Frequently asked questions

How do I convert Markdown to HTML?

Paste your Markdown into the Source panel, then switch to the "HTML" tab (or use the "Copy HTML" button) to get the converted HTML markup. The conversion happens instantly and entirely in your browser — nothing is uploaded to a server.

What is the difference between CommonMark and GitHub Flavored Markdown?

CommonMark is a strict, unambiguous specification of the Markdown syntax. GitHub Flavored Markdown (GFM) is a superset that adds tables, fenced code blocks (```), task list items (- [x]), strikethrough (~~text~~), and autolinks. This tool uses GFM conventions.

How do I add a code block in Markdown?

For inline code, wrap the text in backticks: `code`. For a multi-line code block, use three backticks on their own lines before and after the code. Optionally add a language name after the opening backticks for syntax highlighting: ```javascript.

How do I create a table in Markdown?

Use pipes | to separate columns and hyphens for the header separator row: | Col 1 | Col 2 | / |-------|-------| / | A | B |. Alignment is set with colons in the separator: :--- (left), :---: (center), ---: (right).

Is the converted HTML sanitized?

Yes. The output HTML is sanitized with DOMPurify before being displayed or copied. This prevents any embedded HTML—such as <script> tags or event handler attributes—from executing in the preview or ending up in the HTML you copy.