Live editor for Mermaid diagrams — write flowcharts, sequence diagrams and more as text, see them render instantly, export as SVG or PNG.
Why we recommend it
Diagrams that live as text are easier to review, diff and keep in sync with documentation than a dragged-and-dropped canvas. Mermaid Live is the fastest way to write and preview one without setting up a local toolchain.
Strengths
- Free and open source under MIT. Instant live preview, supports a wide range of diagram types (flowcharts, ER diagrams, Gantt charts and more), one-click export and shareable links.
Keep in mind
- Layout is algorithmic, not manually adjustable — you describe relationships, not exact positions, so pixel-precise diagrams aren't the point. Syntax has a learning curve for the more advanced diagram types.
How much does Mermaid Live cost?
Free — Free.
List price, excluding tax. Compare prices across the directory.
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