Free Online Tool

Convert Mermaid diagrams to PNG

Write Mermaid code on the left, see the rendered diagram on the right. Download as a high-resolution PNG image. Supports flowcharts, sequence diagrams, Gantt charts, and more.

Your files never leave your browser. All processing happens locally.
Examples
Mermaid Code
Preview
Type or select an example to preview

How do you convert a Mermaid diagram to PNG?

Converting a Mermaid diagram to PNG turns text-based diagram code into a shareable raster image you can drop into documents, presentations, or README files. This tool renders your Mermaid syntax live, then exports the result as a PNG with one click.

Paste or type your Mermaid code, watch the diagram render, and click Download PNG — the image is exported at 2x scale for crisp results on Retina and high-DPI screens. You can also export as SVG for a scalable vector version. Flowcharts, sequence, state, Gantt, pie, and class diagrams are all supported, and everything renders locally in your browser.

FAQ

Common questions

How do I convert a Mermaid diagram to PNG?

Paste or type your Mermaid code in the editor on the left. The diagram renders instantly on the right. Click 'Download PNG' to save a high-resolution PNG image to your device.

What resolution is the exported PNG?

The PNG is exported at 2x scale for crisp results on Retina and high-DPI displays. The output is a white-background image suitable for documents, presentations, and README files.

Is my diagram data private?

Yes. All rendering happens in your browser using Mermaid.js. Your diagram code is never sent to any server. Nothing is uploaded, stored, or logged.

Can I also export as SVG?

Yes. In addition to PNG, you can download the diagram as an SVG vector file or copy the SVG markup to your clipboard for use in design tools like Figma or Illustrator.

What Mermaid diagram types are supported?

Flowcharts, sequence diagrams, state diagrams, Gantt charts, pie charts, and class diagrams. All standard Mermaid syntax is supported.

Mermaid Flowchart Syntax Guide
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Render Mermaid diagrams in your Markdown files

MacMD Viewer renders Mermaid diagrams inline in .md files on Mac. No plugins, no config. Just open a file and see your diagrams.

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