📝

Markdown Editor

🔒 In your browser

Write Markdown with a live side-by-side preview and copy the HTML.

How it works

Write Markdown on the left and watch it render live on the right. Supports GitHub-flavoured Markdown — headings, lists, tables, code blocks, links and quotes. Copy the HTML when you're done.

Markdown

Preview

🔒 Processed entirely in your browser — your text is never uploaded or stored.

About the Markdown Editor

This free online Markdown editor shows your formatted result next to your source as you type. It supports GitHub-flavoured Markdown — headings, bold and italic, lists, links, images, blockquotes, tables and fenced code blocks — and lets you copy the generated HTML when you're finished.

Nothing is uploaded or saved to a server; the editor runs entirely in your browser.

Markdown basics

# Heading, ## Subheading — one # per level.
**bold** and *italic*.
- item for bullets, 1. item for numbered lists.
[link text](https://example.com) and ![alt](image.png).
> quote, and ``` for a fenced code block.

Why a live preview helps

Markdown is quick to write but easy to get subtly wrong — a missing blank line before a list, or mismatched code fences. Seeing the rendered result update as you type catches those instantly, so you fix formatting while you write rather than after publishing. When you're done, the generated HTML is right there to copy into a CMS, email or web page.

Frequently asked questions

What is Markdown?

A lightweight way of formatting plain text using simple symbols — # for headings, ** for bold — that converts cleanly to HTML. It's the standard for READMEs, documentation and many note apps.

Does it support tables and code blocks?

Yes. It uses GitHub-flavoured Markdown, so tables, fenced code blocks and strikethrough all work.

Is my document saved?

No. The editor keeps everything in your browser for the session only — nothing is uploaded or stored, so keep your own copy.

Is the preview safe if my Markdown contains HTML?

Yes. Markdown allows raw HTML, so the preview is sanitised before rendering — scripts and event handlers are stripped out.

Is the preview safe if my Markdown contains raw HTML?

Yes. Markdown allows embedded HTML, so the preview is sanitised before rendering — scripts, event handlers and dangerous URLs are stripped, so pasting untrusted content can't run code.

Learn more

Markdown Syntax Guide →

Related Text tools

Markdown to HTML HTML to Markdown Base64 Encode/Decode URL Encode/Decode Slugify — URL Slug Generator

🔗 Embed this tool on your website — free

Copy this and paste it into your page's HTML. The tool runs in the visitor's browser, just like here. Change height to fit, or add the optional auto-resize snippet below. Add ?theme=dark to the URL for dark mode.

<iframe src="https://toolhq.dev/embed/markdown-editor/" title="Markdown Editor — ToolsHub" width="100%" height="520" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" loading="lazy"></iframe>

Optional: auto-resize the iframe height

Add this once on the same page so the iframe grows to fit the tool:

<script>
addEventListener("message", function (e) {
  if (e.data && e.data.type === "toolshub:resize") {
    document.querySelectorAll('iframe[src*="/embed/"]').forEach(function (f) {
      if (f.contentWindow === e.source) f.style.height = e.data.height + "px";
    });
  }
});
</script>