What it does
Markdown editing
Standard Markdown with GitHub flavor support. Includes syntax highlighting, keyboard shortcuts, and formatting buttons.
Mermaid diagrams
Create flowcharts, sequence diagrams, and other visuals using Mermaid syntax. Renders in real-time as you type.
LaTeX math
Render mathematical expressions and equations using LaTeX syntax. Supports both inline and block math.
Live preview
Split-pane view with instant preview. See exactly how your markdown will look while you write.
Auto-save
Your work is automatically saved to browser local storage. No accounts, no data sent anywhere.
Free to use
No registration, no payments, no limits. Just open it and start writing.
Built-in help
Quick reference for Markdown, Mermaid, and LaTeX syntax available when you need it.
Good for
Documentation
API docs, project READMEs, technical guides. Add flowcharts, architecture diagrams, and mathematical formulas inline with your text.
Note-taking
Meeting notes, research, study materials. Organize thoughts with headers, lists, visual diagrams, and mathematical equations.
Academic & Research
Research papers, technical analysis, scientific documentation. Combine text, diagrams, and complex mathematical expressions in one place.