Free Mermaid.js Live Editor & Visualizer Online
Create flowcharts, sequence diagrams, Gantt charts, and class diagrams using simple text syntax.
Quick Navigation
Jump to specific sections of the Mermaid.js Live Editor & Visualizer guide.
Key Features
Powerful capabilities of our mermaid.js live editor & visualizer.
Live Preview
Diagram updates instantly as you type code.
Syntax Highlighting
Editor helps you write valid Mermaid syntax.
Export
Download diagrams as SVG or PNG.
Templates
Start quickly with pre-loaded diagram examples.
Zoom & Pan
Easily navigate large complex diagrams.
How to use Mermaid.js Live Editor & Visualizer
Select Type
Choose a diagram type (Flowchart, Sequence, etc.).
Write Code
Edit the Mermaid syntax on the left panel.
Customize
Adjust nodes and links using text commands.
Share
Download the result as an image.
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Frequently Asked Questions about Mermaid.js Live Editor & Visualizer
Do I need to know coding?
Mermaid is very simple text-based generic syntax, easy to learn.
Is it compatible with GitHub?
Yes, GitHub uses Mermaid for diagrams too.
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