Markdown to HTML
Convert Markdown to HTML with tables and code blocks, and preview the result. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.
The preview is sanitized before it is displayed: script and style elements, iframes, event handler attributes and javascript: URLs coming from your input are removed, and images are kept only when their source is an absolute http(s) or data:image URL. The sanitizer combination is shown above; the HTML below the preview is the cleaned markup.
Markdown to HTML, With a Sanitized Preview
Markdown is a plain-text format, so a browser cannot display it as a formatted page — it has to be converted to HTML first. This tool does that conversion and shows both results: a rendered preview of headings, paragraphs, lists, tables, code blocks, links and images, and the HTML source that you can copy or download. The converter is the marked library, served from this site instead of an external CDN, and it runs in your browser; nothing is uploaded. Because Markdown may contain raw HTML, the preview is sanitized before it is displayed: script and style elements, iframes, event handler attributes such as onerror and javascript: URLs are removed, first with DOMPurify and then with a built-in pass over the finished DOM. Every conversion reports how many items were removed, so you can see the sanitizer working. What the tool does not do: it does not check your Markdown against a dialect.
Markdown zu HTML — mit bereinigter Vorschau
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What is Markdown to HTML?
Markdown to HTML is a free online text tool built for writers, editors, students and anyone cleaning up copy. Convert Markdown to HTML with tables and code blocks, and preview the result In practice you paste your Markdown, convert it, including tables and fenced code blocks, and then copy the HTML or check the live preview.
Nothing you paste is uploaded: the conversion runs as JavaScript inside your browser tab, so drafts, manuscripts and internal documents stay on your machine.
How to use Markdown to HTML
- Paste your Markdown.
- Convert it, including tables and fenced code blocks.
- Copy the HTML or check the live preview.
Markdown to HTML FAQ
Is Markdown to HTML free to use?
Yes. Markdown to HTML is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.
Is my data uploaded anywhere?
No. Markdown to HTML runs entirely in your browser, so the text, file or number you enter never leaves your device.
Does Markdown to HTML work on a phone or tablet?
Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.
How do I use Markdown to HTML?
Paste your Markdown. Convert it, including tables and fenced code blocks. Copy the HTML or check the live preview.