Professional Mermaid Editor

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Create flowcharts, sequence diagrams, class diagrams, and 20+ professional charts with Mermaid syntax. Real-time preview, export in multiple formats.

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Explore our collection of Mermaid diagram templates. Click "Open in Editor" to start editing.

Basic Flowchart

A simple flowchart showing decision logic

Code

123456

flowchart TD
    A[Start] --> B{Decision}
    B -->|Yes| C[Execute Action A]
    B -->|No| D[Execute Action B]
    C --> E[End]
    D --> E

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Supports 20+ chart types including flowcharts, sequence diagrams, class diagrams, gantt charts, etc.

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