Mermaid Diagram Editor - Create, Edit & Export Online

How Mermaid Studio works

Mermaid Studio is a professional-grade, 100% client-side Mermaid diagram editor with live preview, unlimited exports, and curated themes:

• Write Mermaid diagram-as-code with Monaco editor and syntax highlighting
• Live preview updates instantly as you type
• 4 professional themes: Blueprint, Executive, Terminal, Whiteboard
• Export as PNG (1x, 2x, 3x, 4x resolution) or SVG for presentations and documents
• Copy diagram image directly to clipboard for pasting into Slack, Figma, or Google Docs
• Share diagrams via URL with lossless compression
• Supports all Mermaid diagram types: Flowchart, Sequence, Class, State, ER, Gantt, Pie, Git Graph, Mindmap, Timeline
• Auto-saves your work to localStorage — never lose a diagram

Free to use with no sign up required. A Mermaid Live Editor alternative with unlimited exports, professional themes, and no rate limits. All processing happens in your browser — your diagrams never leave your device.