Markdown to HTML

What this tool does

This tool converts Markdown into HTML. You type or paste Markdown, and it produces a clean HTML string that you can copy, download as a .html file, or inspect in a live rendered preview. The primary output is the HTML source — the actual markup you will paste into a template, a CMS field, or an email — and the preview is there so you can confirm it looks right before you ship it. Everything runs inside your browser, so the Markdown you write is never uploaded.

Why you might need it

Markdown is comfortable to write, but the web speaks HTML. Whenever you need to move Markdown content into something that expects markup — a blog template, a newsletter, a help-centre article, a product description — you need the HTML equivalent. Doing that conversion by hand means remembering that ## becomes an <h2>, that a blank line starts a new <p>, and that list items each need their own <li>. This tool handles all of it instantly and consistently. It is also handy for learning: paste a snippet of Markdown and watch exactly which HTML elements it expands into.

How to use it

1. Type or paste your Markdown into the input box.
2. Click Convert to HTML, or press Ctrl/Cmd + Enter.
3. Use the HTML source view to read and copy the generated markup.
4. Switch to the Preview view to see the content rendered safely.
5. Copy the HTML with one click, or download it as a complete .html file.

The character counter next to the source view shows how large the generated HTML is — useful when you are pasting into a field with a length limit.

Common pitfalls

The most common surprise is whitespace. Markdown treats a single line break differently from a blank line: one blank line separates paragraphs, while a plain line break inside a paragraph is usually collapsed. If two lines of text merged into one <p>, add a blank line between them. Fenced code blocks need matching triple-backtick fences; an unclosed fence makes everything after it render as code. Indentation matters for nested lists — use consistent two or four space steps. Finally, remember that the preview intentionally blocks scripts, so an embedded <script> will appear inert there even though the tag is faithfully present in the HTML source.

Tips and advanced use

When you are preparing content for an email, copy from the HTML source view rather than the preview — email clients want the raw markup, and you can paste it directly into a template. The downloaded .html file is a complete, standalone document with a doctype, so you can open it straight in a browser. Because the preview is sandboxed, this is a genuinely safe way to inspect Markdown you received from someone else: even a malicious script tag cannot run. And since the whole conversion is client-side, drafting a private release note or an internal runbook here never sends your words to anyone — the tool works the same offline as it does online once the page has loaded.