Mermaid Diagram Converter
Render Mermaid diagram code into downloadable PNG or SVG images.
How to Use Mermaid Diagram Converter
- Write or paste your Mermaid syntax code in the left editor panel. Use the quick examples dropdown for common diagram types.
- Click 'Render Diagram' to generate the visual diagram in the preview panel on the right.
- Download the rendered diagram as a high-resolution PNG image or scalable SVG file, or copy the SVG code directly.
About Mermaid Diagram Converter
The Mermaid Diagram Converter transforms Mermaid syntax code into beautiful, downloadable diagrams. Mermaid is a powerful 'diagrams as code' tool that lets you create flowcharts, sequence diagrams, class diagrams, state diagrams, Gantt charts, pie charts, and more — all from simple text descriptions. This is the preferred approach for technical documentation because diagrams can be version-controlled with Git, reviewed in pull requests, and maintained alongside code. Our converter renders your Mermaid code into SVG diagrams in real-time, and lets you download them as high-resolution PNG images (2x resolution for Retina displays) or scalable SVG files for use in documentation, presentations, README files, and wikis. Quick example templates help you get started with each diagram type.
Frequently Asked Questions
What diagram types does Mermaid support?
Mermaid supports flowcharts (graph TD/LR), sequence diagrams, class diagrams, state diagrams, entity-relationship diagrams, Gantt charts, pie charts, user journey maps, and Git graphs. Our tool supports all Mermaid diagram types.
Should I download PNG or SVG?
SVG is scalable and looks sharp at any size — ideal for documentation, wikis, and web pages. PNG is a raster format better for presentations, emails, and chat messages. Our PNG export uses 2x resolution for crisp display on Retina screens.
Can I use Mermaid diagrams in GitHub?
Yes! GitHub natively supports Mermaid diagrams in Markdown files. Just wrap your Mermaid code in a code block with the 'mermaid' language identifier. Our tool is perfect for previewing diagrams before committing.
What is 'Diagrams as Code'?
Diagrams as Code is the practice of defining diagrams using text/code instead of visual drag-and-drop editors. Benefits include version control, code review, automation, and consistency. Mermaid is the most popular tool for this approach.