ToolBirch

Markdown Preview

Render Markdown to sanitized HTML with live styling.Text Tools

Markdown Preview

Render Markdown to sanitized HTML in place. Scripts, event handlers and javascript: URLs are stripped before anything is displayed.

About this tool

See what your README, comment or article will look like before you publish it. marked handles the GFM dialect — tables, strikethrough, task lists — and DOMPurify strips every executable construct before the HTML touches the page.

How to use the Markdown Preview tool

  1. Write your Markdown. GitHub-flavoured syntax: headings, tables, code blocks, task lists.
  2. Render. The sanitized HTML appears below, styled like the rest of the site.
  3. Copy the HTML. Take the sanitized markup into your CMS or email tool.

Supported formats

Input

  • Markdown (GitHub-flavoured)

Output

  • Rendered preview
  • Sanitized HTML source

Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.

Frequently asked questions

Is raw HTML in my Markdown executed?

No. DOMPurify removes scripts, event handler attributes and javascript: URLs, allowing only plain formatting markup.

Which flavour is supported?

GitHub-flavoured Markdown via marked: tables, fenced code blocks, task lists and strikethrough.

Can I preview link-heavy documents?

Yes. Links render normally with href intact, but no navigation happens inside the preview panel.

Is the HTML export safe to embed?

Yes. What you copy is exactly the sanitized output that was displayed.

Privacy

Everything you enter stays in this browser tab. There is no upload endpoint for tool inputs, no account, and no server-side copy of your text or files. Results are produced locally and disappear when you close the page.

No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.

Known limitations

  • No syntax highlighting inside code blocks.
  • Math and diagram extensions are not supported.
  • The preview styles mirror this site, not your target platform's CSS.

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