Mermaid Diagram Editor

Create flowcharts, sequence diagrams, and more with live preview.

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About Mermaid Diagrams

Mermaid is a JavaScript-based diagramming tool that uses Markdown-inspired text definitions to create diagrams dynamically. Write simple text and get flowcharts, sequence diagrams, Gantt charts, and more.

Flowcharts

Decision trees, process flows, and system diagrams

Sequence Diagrams

API calls, message flows, and interaction patterns

Class & ER Diagrams

Data models, schemas, and entity relationships

Gantt & State

Project timelines, state machines, and pie charts

Learn more at mermaid.js.org