Generator

Mermaid Diagram Builder

Build Mermaid diagrams (flowchart, sequence, state, ER, class). Paste the output into GitHub README, Notion, or any Mermaid-compatible viewer.

Diagram type

Mermaid source

Markdown with Mermaid block

```mermaid
flowchart TD
  A[Start] --> B{Decision}
  B -->|Yes| C[Action 1]
  B -->|No| D[Action 2]
  C --> E[End]
  D --> E
```

Raw Mermaid

flowchart TD
  A[Start] --> B{Decision}
  B -->|Yes| C[Action 1]
  B -->|No| D[Action 2]
  C --> E[End]
  D --> E