Mermaid Diagram Studio

Flowchart

Parse flowchart / graph nodes, edges and direction into a recognizable SVG plan with node groups and arrowed edges.

Run in browser

Inputs and parameters

• input — Mermaid flowchart source

Real example

flowchart TD
  Start["Parse Mermaid source"] --> Guard{"Strict policy<br/>allows it?"}
  Guard -->|yes| Render["Build SVG plan & PNG steps"]
  Guard -->|no| Report["Report line / column / node"]
→ flowchart: 4 nodes / 3 edges; labels carry CJK, &, <br/> line breaks and quotes; SVG has <g class="node">, <g class="edge"> and arrow markers; no script tags or external links.

Limits and failure handling

The deterministic parser covers a common subset of the four task-book grammars; it is not a full Mermaid renderer. Complex nested subgraph layout, theme variables and PNG bitmaps are untested. Inputs over 100KiB or 1000 nodes are rejected with localization.

FAQ