Mermaid live editor — diagram preview & export
Paste Mermaid source and see live SVG preview. Switch themes, copy SVG, or download SVG/PNG — mermaid.js renders in-tab with no uploads.
Frequently asked questions
No. Mermaid source is rendered to SVG only in your browser. Nothing is sent to LocalTools servers for processing.
Yes—copy or download SVG for crisp vector output, or download PNG for quick sharing. PNG is rasterized locally via html-to-image.