Markdown to HTML
Convert Markdown to clean HTML with a live, safe preview.
How to use Markdown to HTML
- Write or paste Markdown, or open a .md file.
- See the HTML source and a rendered preview update as you type.
- Copy the HTML or download it.
How it works
Conversion uses markdown-it, which follows the CommonMark specification plus GitHub-style tables and strikethrough. Raw HTML inside the Markdown is escaped rather than passed through, and javascript: links are refused, so the output is safe to paste into a web page.
The preview is rebuilt from an allow-list of safe elements, an extra layer of protection on top of the converter’s own escaping.
Frequently asked questions
Why is my inline HTML shown as text?
For safety, raw HTML is escaped. If you need custom HTML, add it to the output after converting.
Is this GitHub-flavoured Markdown?
It supports CommonMark plus tables, strikethrough and autolinks. GitHub-specific features such as task lists, mentions and alerts are not converted.
Why don’t external images appear in the preview?
The page’s security policy blocks loading images from other sites. They will work in the HTML you copy.
Is my document uploaded?
No. Everything runs in your browser.
Limitations
- No syntax highlighting in code blocks (language classes are kept so your site can add it).
- External images are not loaded in the preview.
Last reviewed November 9, 2026. How we build and test tools.