Live Preview
See your formatted Markdown rendered in real-time as you type. Our split-view interface shows your source code on the left and the beautiful preview on the right.
Features
GitHub Flavored Markdown
Full support for GFM including tables, task lists, strikethrough, fenced code blocks with syntax highlighting for 15+ programming languages, and autolinks.
Export to PDF, HTML, and Markdown
Download your documents in multiple formats. Export to PDF for sharing, HTML for web publishing, or Markdown for use in other applications.
Math Equations with KaTeX
Write beautiful mathematical equations using LaTeX syntax. Use $...$ for inline math and $$...$$ for display equations. Perfect for academic writing and technical documentation.
Mermaid Diagrams
Create flowcharts, sequence diagrams, Gantt charts, class diagrams, and more using Mermaid syntax. Simply wrap your diagram code in a mermaid code block.
Multiple Document Tabs
Work on multiple documents simultaneously with our tabbed interface. Switch between documents instantly without losing your work.
Auto-Save to Browser
Your documents are automatically saved to your browser's local storage. Never lose your work - even if you close the tab or browser.
Dark Mode
Easy on the eyes with our beautiful dark theme. Toggle between light and dark modes to match your preference or system settings.
Keyboard Shortcuts
Speed up your workflow with intuitive keyboard shortcuts. Bold, italic, links, code, headings - all accessible without leaving the keyboard.
How to Use the Markdown Editor
- Open the editor - Visit markdown.muthu.co in any modern browser. No download or signup needed.
- Write your content - Type Markdown in the left panel. Use the toolbar for quick formatting.
- Preview in real-time - See your formatted document instantly in the right preview panel.
- Export when ready - Download as .md, .html, or .pdf using the Export button.
Markdown Syntax Quick Reference
| Syntax | Result |
|---|---|
| # Heading 1 | Heading 1 |
| ## Heading 2 | Heading 2 |
| **bold** | bold |
| *italic* | italic |
| [link](url) | link |
|  | Image |
| `inline code` | inline code |
| - list item | Bullet list |
| 1. numbered | Numbered list |
| > blockquote | Blockquote |
| --- | Horizontal rule |
| - [ ] task | Task list |
Frequently Asked Questions
What is a Markdown editor?
A Markdown editor is a text editing tool that allows you to write content using Markdown syntax - a lightweight markup language created by John Gruber. Our online Markdown editor provides live preview, showing you exactly how your formatted text will appear as you type.
Is this Markdown editor free to use?
Yes, our Markdown editor is completely free to use with no signup required. All features including live preview, PDF export, HTML export, math equations, and diagrams are available at no cost. We believe great tools should be accessible to everyone.
Can I export Markdown to PDF?
Yes, you can export your Markdown documents to PDF with a single click. The PDF export preserves all formatting including syntax highlighting, tables, images, math equations, and diagrams. Perfect for sharing documents or printing.
Does this editor support GitHub Flavored Markdown?
Yes, our editor fully supports GitHub Flavored Markdown (GFM). This includes tables, task lists with checkboxes, strikethrough text, fenced code blocks with syntax highlighting for popular programming languages, and automatic URL linking.
Can I write math equations in Markdown?
Yes, our editor supports LaTeX math equations using KaTeX - a fast, high-quality math typesetting library. Use $...$ for inline math like $E = mc^2$ and $$...$$ for display equations. Perfect for academic papers, technical documentation, and educational content.
How do I create diagrams in Markdown?
Our editor supports Mermaid diagrams. Create a code block with 'mermaid' as the language, then write your diagram syntax. You can create flowcharts, sequence diagrams, Gantt charts, class diagrams, entity relationship diagrams, and state diagrams.
Is my data saved securely?
Your documents are automatically saved to your browser's local storage. This means your work persists even if you close the browser or tab. Importantly, your data stays on your device and is never uploaded to any server, ensuring complete privacy.
What keyboard shortcuts are available?
Common shortcuts include: Ctrl+B (bold), Ctrl+I (italic), Ctrl+K (insert link), Ctrl+` (inline code), Ctrl+Shift+` (code block), Ctrl+S (save), Ctrl+F (find), and Ctrl+1 through Ctrl+6 for headings H1-H6. All shortcuts work with Cmd on Mac.
Can I use this editor offline?
Once the editor is loaded in your browser, most features work offline. However, some features like math rendering (KaTeX) and diagrams (Mermaid) require loading external libraries and may not work offline on first use.
What is Markdown used for?
Markdown is widely used for writing README files on GitHub, documentation, blog posts, notes, technical writing, and content management systems. It's popular because it's easy to learn, readable in plain text, and converts cleanly to HTML.
Popular Use Cases
- GitHub README files - Create beautiful project documentation
- Technical documentation - Write API docs, user guides, and specs
- Blog posts - Draft content for Jekyll, Hugo, or other static site generators
- Note-taking - Capture meeting notes, ideas, and personal knowledge
- Academic writing - Write papers with math equations and citations
- Presentations - Create slides using Markdown-based tools