Mermaid Live Editor - Free Online Tool | PivaBox

Create diagrams from text — flowcharts, sequence diagrams, class diagrams and more using Mermaid syntax

How to Use the Mermaid Live Editor

1. Write your diagram code using Mermaid syntax in the code editor — choose from flowchart, sequence, class, state, ER, Gantt, pie, or git graph templates
2. View the rendered diagram in the live preview panel as you type — the diagram updates automatically as you edit
3. Customize the theme (default, forest, dark, neutral), adjust the zoom level, and click Download SVG or Download PNG to export your diagram

Frequently Asked Questions

Is Mermaid Live Editor free?

Yes, PivaBox Mermaid Live Editor is completely free to use. There are no charges, subscriptions, or hidden fees. All diagram rendering happens locally in your browser using the Mermaid.js library.

Are my diagrams uploaded to a server?

No. All diagram editing, rendering, and export runs entirely in your browser using JavaScript and the Mermaid.js library. Your diagram code and generated images never leave your device, ensuring complete privacy.

What diagram types are supported?

Mermaid Live Editor supports 8 diagram types: <strong>Flowcharts</strong> for process visualization, <strong>Sequence diagrams</strong> for interactions, <strong>Class diagrams</strong> for object-oriented design, <strong>State diagrams</strong> for state machines, <strong>ER diagrams</strong> for database design, <strong>Gantt charts</strong> for project planning, <strong>Pie charts</strong> for data proportions, and <strong>Git graphs</strong> for version control visualization.