How does the Sankey Diagram Generator work?

Configure your options (quantity, format, range, etc.), then click Generate. The tool creates your content instantly in the browser. You can preview, copy, or download the results.

Is the Sankey Diagram Generator free to use?

Yes, this tool is completely free with no signup required. All processing happens locally in your browser — your data is never uploaded to any server, ensuring complete privacy and security.

Can I customize the output from the Sankey Diagram Generator?

Yes, the generator offers various options to customize the output including format, quantity, and style parameters. Adjust the settings before clicking Generate to get results that match your needs.

🔀 Sankey Diagram Generator

Visualize data flows — input nodes and flow data to instantly generate professional Sankey diagrams. Export to PNG/SVG. No signup required.

📊 Data Configuration

Node Columns (comma-separated nodes per column)

Flow Data (source → target = value, one per line)

Format: Source→Target=Value. One flow per line. Use positive integers.

Color Scheme:

Node Width: px Padding: px

📈 Chart Preview

❓ Frequently Asked Questions

What is a Sankey diagram?

A Sankey diagram is a flow visualization chart that uses arrows proportional to flow magnitude to show how data moves between nodes. Commonly used for energy flows, budget allocations, user journeys, and more.

How do I use this generator?

① Define your node columns (comma-separated); ② Enter flow data as "source→target=value"; ③ Click "Generate Chart" to see the visualization; ④ Export as PNG or SVG.

What data format is required?

Flow data format: SourceNode→TargetNode=Value. Source and target nodes must exist in your defined columns. Values should be positive integers.

Can I customize colors?

Yes! Choose from four preset color schemes: Blue, Rainbow, Green, and Warm. Switch via the dropdown menu.