Mermaid lets you describe a diagram in plain text — but the platforms where you want to share it usually can't render Mermaid source. The fix is to export your diagram as a PNG image. This guide shows you how to do it for free, right in your browser.

Why convert Mermaid to PNG?

Mermaid source only renders where a Mermaid engine is available — GitHub, some docs tools, and a handful of editors. Everywhere else (X Articles, slide decks, newsletters, design tools) you need an image. A PNG export gives you:

• A diagram that looks identical everywhere, with no renderer required
• Crisp, high-resolution output for retina screens and slides
• Colors that match your theme instead of a generic default
• A portable asset you can drop into any document

How to convert Mermaid to a PNG

1. Write your diagram

Open the MD2X editor and add a fenced mermaid code block:

```mermaid
flowchart TD
    A[Start] --> B{Decision}
    B -->|Yes| C[Ship it]
    B -->|No| D[Iterate]
```

The live preview renders the diagram as you type, so syntax errors show up immediately.

2. Review the rendered diagram

Check the preview panel. Diagram colors are synced to your active theme, so the result looks right in both light and dark mode.

3. Copy or download the PNG

The rendered diagram appears in the Assets panel. Copy it to your clipboard or download the PNG to embed in your article, slides, or docs.

Supported diagram types

MD2X renders everything Mermaid supports: flowcharts, sequence diagrams, class diagrams, state diagrams, entity-relationship diagrams, and Gantt charts.

Start rendering

Ready to turn your Mermaid source into a shareable image? Open the Mermaid-to-PNG tool →