Convert Mermaid to PNG

PNG is the right format when the destination can't render Mermaid itself: slide decks, emails, chat messages, Confluence pages, or anywhere you need a plain image. The export rasterises at 2× resolution with the display font embedded, so labels stay sharp and never get clipped.

How it works

1. Paste (or write) your Mermaid code in the editor — the preview renders live.
2. Check the preview. If you see a syntax error, fix the highlighted line or open the code in the full editor and use AI repair.
3. Click “Download PNG”. The image is rendered locally at 2× resolution with a white background.

Frequently asked questions

How do I convert a Mermaid diagram to PNG?

Paste your Mermaid code into the converter above and click Download PNG. The diagram is rendered with Mermaid.js in your browser and rasterised to a 2× resolution PNG with a white background — no signup or upload required.

Is this converter free?

Yes, the converter is free and requires no account. If you want to keep editing the diagram, the 'Open in editor' button takes the same code into MermaidCreator's free visual + code editor.

Is my diagram uploaded to a server?

No. The conversion runs entirely in your browser: Mermaid.js renders your code to SVG locally and the download is produced on your machine. Your diagram code never leaves your computer.

Why do other exporters clip my labels?

When an SVG is rasterised in a context that can't load the original font, the text falls back to a wider font than the one Mermaid measured the node boxes with, so labels overflow and get cut off. This converter embeds the font into the SVG before rasterising, so the PNG matches the preview exactly.

More free Mermaid tools

• Mermaid to SVG converter
• Mermaid to PDF converter
• Mermaid cheat sheet — copy-paste syntax for every diagram type
• Diagram templates — ready-made starting points