About this utility

How to use Mermaid & Graphviz Renderer

Render Mermaid or Graphviz DOT diagrams into a sanitized SVG preview entirely in the browser.

What to provide

Paste Mermaid or DOT source. External links, HTML labels, scripts, events, and foreign objects are removed from the result.

Paste, type, or drag and drop a supported text file into the input area.
Choose the options that match your intended result.
Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.

What the result means

A downloadable sanitized SVG and safe image preview.

Privacy and safety

This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.

Limitations

Rendering does not fetch external resources. Very large graphs can be expensive in a browser; layout may differ between engine versions.

Try the included example

Select “Load example” at any time to restore this tested sample.

flowchart LR
  A[JSON] --> B[YAML]
  B --> C[Configuration]

Mermaid & Graphviz Renderer