Markdown Editor
Write Markdown on the left and watch it render live on the right. A clean, distraction-free editor for READMEs, documentation, and notes — with one-click copy of the generated HTML.
Appachi Tools
A free markdown editor with live preview.
Features
- GitHub-flavored markdown
- Tables, task lists & code blocks
- Copy the rendered HTML
| Tool | Free |
|---|---|
| Markdown | ✅ |
console.log("hello, world");
- Write markdown
- Ship docs
Everything renders right in your browser.
About the Markdown Editor
Markdown is a lightweight markup language that turns plain text into formatted documents using simple symbols — # for headings, * for emphasis, backticks for code. It powers READMEs, GitHub issues, docs sites, and countless note-taking apps because it is readable as source and renders cleanly.
A live preview removes the guesswork: you see headings, lists, tables, and code blocks exactly as they will appear while you write. The rendered HTML is sanitized before display, so pasting untrusted Markdown will not execute scripts, and nothing you write is uploaded.
Markdown was created in 2004 by John Gruber (with Aaron Swartz), designed explicitly to be readable as plain text even before it's rendered — the opposite goal of HTML, which is built to be parsed by a machine, not read by a person. That readability is exactly why it won out for READMEs and documentation: a Markdown file makes sense whether you open it in a browser, an editor, or a raw git diff.
"GitHub-flavored Markdown" (GFM), which this editor renders, is GitHub's own extension of the original spec — it adds tables, task lists (- [ ] / - [x]), strikethrough, and fenced code blocks with syntax-highlighting hints (```js), none of which existed in Gruber's original version. GFM has become the de facto standard well beyond GitHub itself, which is why most modern Markdown tools, including this one, target it rather than the bare original spec.
How to use it
- 1Type or paste Markdown into the editor panel.
- 2See it render in real time in the preview panel.
- 3Copy the HTML output when you are happy with the result.
Features
- Split-screen editor with instant live preview
- GitHub-flavored Markdown: tables, task lists, fenced code
- Copy the rendered HTML for your CMS or site
- Safe rendering — output is sanitized to strip unsafe HTML
Frequently asked questions
What flavor of Markdown is supported?
It renders GitHub-flavored Markdown, including tables, task lists, strikethrough, and fenced code blocks.
Can I export the HTML?
Yes. The preview is real HTML — copy it with one click to paste into a CMS, email, or website.
Is the preview safe from malicious input?
Yes. The rendered output is sanitized with DOMPurify, so embedded scripts or unsafe HTML are stripped before display.
Is my document private?
Yes. Everything is rendered locally in your browser; your Markdown is never sent to a server.
Who created Markdown, and why?
John Gruber created it in 2004 (with input from Aaron Swartz), specifically so that plain-text files could be both easy for humans to read unrendered and straightforward to convert to clean HTML.
What is "GitHub-flavored Markdown" and how does it differ from plain Markdown?
GFM is GitHub's extension of the original spec, adding tables, task-list checkboxes, strikethrough and fenced code blocks with language hints — features the original 2004 spec never defined. It's now the de facto standard most Markdown tools target.
Why sanitize the rendered HTML instead of trusting the Markdown parser?
Markdown can technically contain raw HTML (including <script> tags). Sanitizing the final rendered output with a library like DOMPurify strips anything unsafe before it's displayed, so pasting untrusted Markdown can't execute code in your browser.