Free Online Markdown Editor with Live Preview
Write Markdown and see the rendered output in real time. Ideal for README files, documentation, blog posts, and any content that uses Markdown formatting.
What Is Markdown?
Markdown is a lightweight markup language created by John Gruber in 2004. It uses plain text formatting syntax (like # for headings, ** for bold, - for lists) that converts to HTML. The goal is readability — a Markdown file should be easy to read even without rendering.
Today Markdown is everywhere: GitHub READMEs, documentation sites (Docusaurus, MkDocs), note-taking apps (Obsidian, Notion), static site generators (Hugo, Jekyll), and messaging platforms (Slack, Discord). Most developers encounter it daily.
This editor supports CommonMark (the standardized spec) plus GitHub Flavored Markdown (GFM) extensions — tables, task lists, strikethrough, and fenced code blocks with syntax highlighting. The live preview updates as you type, so you can see exactly how your content will render.
When You Need a Markdown Editor
Writing GitHub README files
Draft your project README with live preview to ensure headings, code blocks, badges, and links render correctly before pushing to your repository.
Creating documentation
Write technical docs, API guides, or wiki pages in Markdown. See the formatted output instantly without running a build step or deploying to a docs site.
Drafting blog posts and articles
Many static site generators and CMS platforms use Markdown for content. Write your posts here with live preview, then copy the Markdown into your publishing workflow.
Markdown Writing Tips
Use headings hierarchically
Start with a single # (H1) for the title, then use ## (H2) for major sections, ### (H3) for subsections. Don't skip levels — going from H1 to H3 hurts both readability and accessibility.
Add alt text to images
Use  instead of . Alt text helps screen readers and displays when images fail to load. Keep it concise but descriptive.
Use fenced code blocks with language hints
Write ```javascript instead of just ``` to enable syntax highlighting. This makes code examples much easier to read in rendered output.
Features
- Live preview that updates as you type
- GitHub Flavored Markdown (GFM) support — tables, task lists, strikethrough
- Syntax highlighting for code blocks
- Export to HTML or copy rendered output
- Works entirely in your browser — no data sent to any server
- Free, no signup required
Frequently Asked Questions
What Markdown syntax is supported?
The editor supports CommonMark plus GitHub Flavored Markdown (GFM) extensions: tables, task lists (- [ ]), strikethrough (~~text~~), fenced code blocks with language-specific syntax highlighting, and autolinked URLs.
Can I export my Markdown as HTML?
Yes. You can copy the rendered HTML output directly. This is useful when you need to paste formatted content into email clients, CMS editors, or other platforms that accept HTML.
Is my content saved?
The editor runs entirely in your browser. Your content is not sent to any server or stored remotely. You can use your browser's local storage to persist drafts between sessions, but clearing browser data will remove them.
Does it support LaTeX or math equations?
The editor focuses on standard Markdown and GFM. For math equations, you would need to use a specialized Markdown processor that supports LaTeX syntax (like KaTeX or MathJax).
Can I use this for GitHub README files?
Absolutely. The GFM support means what you see in the preview will match how GitHub renders your README. Write and preview here, then paste into your .md file.
Tips & Related Workflows
- Check the word count of your Markdown content with our Word Counter.
- Compare different versions of your documentation with our Diff Checker.
- Convert heading case styles with our Case Converter.