Markdown is the plain-text formatting syntax behind READMEs, documentation sites, note-taking apps, and most developer-facing writing — readable as-is, but meant to be rendered into proper HTML for display. This tool runs your Markdown through marked, a widely-used JavaScript Markdown parser, and gives you back clean, semantic HTML you can paste into a web page, a CMS, an email template, or any other HTML-consuming system.
The conversion follows the CommonMark specification that most modern Markdown processors (GitHub, GitLab, most static site generators) are built on, including the common extensions: fenced code blocks, tables, and automatic link detection. Headings become h1-h6 tags, bold and italic become strong/em, lists become proper ul/ol structures, and code blocks are wrapped in pre/code with the language noted as a class for syntax highlighters to pick up later.
Because everything runs in your browser via JavaScript, there's no size limit beyond what your browser can handle, and nothing about your document — which might be internal documentation, draft content, or anything else you'd rather not hand to a third-party server — ever leaves your device during conversion.
Need to go the other direction — pull Markdown out of existing HTML? Use HTML to Markdown. Want a PDF instead of HTML? Markdown to PDF handles that directly.
