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Mermaid Diagram Editor
Create flowcharts, sequence diagrams and more from text.
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Draw diagrams with text
Mermaid turns simple text into flowcharts, sequence diagrams, class and ER diagrams, Gantt charts, mind maps and more. Type on the left and the diagram updates live. Your code is saved in your browser automatically, and the share link stores the diagram in the URL itself — nothing is uploaded.
Can I use the diagrams in GitHub or Notion?
Yes. GitHub, GitLab and Notion render Mermaid code blocks natively — paste the code inside a ```mermaid block. For slides or documents, download the SVG (scalable) or PNG.