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Markdown to HTML

Convert Markdown to HTML instantly. Free online Markdown-to-HTML converter — live preview, clean output. No signup, 100% private, works in your browser.

How it works

The Markdown to HTML Converter transforms Markdown syntax into valid HTML markup. It supports the CommonMark specification plus common extensions: tables, strikethrough, task lists, footnotes, and fenced code blocks with language classes.

Markdown is the standard format for developer documentation (README files), static site content (Jekyll, Hugo, Next.js), technical writing platforms (GitHub, GitLab, Notion), and content APIs (Contentful, Sanity). Many systems store content as Markdown and need it rendered to HTML for display.

How to use it: type or paste Markdown in the input panel. The HTML output appears in real time in the right panel. Toggle "Preview" mode to see the rendered HTML instead of the raw markup. Copy the HTML directly or download it as an .html file.

Markdown extensions supported: ATX and Setext headings (# H1 and underline style), bold (**text**), italic (*text*), inline code (`code`), fenced code blocks (```language), blockquotes (>), ordered and unordered lists, task lists (- [x]), tables (GFM format), links ([text](url)), images (![alt](url)), and footnotes ([^1]).

CommonMark compliance: this converter follows the CommonMark specification for ambiguous cases — for example, how to handle a list item followed immediately by a paragraph, or how many spaces constitute a code indent. This ensures consistent output across different rendering environments.

Frequently Asked Questions

Which Markdown specification does this follow?
The tool follows the CommonMark specification for core Markdown, with GitHub Flavored Markdown (GFM) extensions for tables, task lists, and strikethrough.
Are code blocks syntax-highlighted?
Fenced code blocks with a language specifier (```javascript) are output with the appropriate lang class (class='language-javascript') for use with highlighting libraries like Prism.js or highlight.js.
Does it sanitize the HTML output?
The raw HTML output is not sanitized. If you are rendering user-supplied Markdown in a web application, you should sanitize the HTML output using a library like DOMPurify before injecting it into the DOM to prevent XSS.
Can I preview the rendered HTML?
Yes. Toggle 'Preview' mode to see the HTML rendered as a formatted page instead of the raw markup.