Sankey Diagram Generator
Paste source,target,value rows and get a flow diagram laid out in columns by longest-path depth, with cubic-bezier ribbons whose thickness is proportional to each flow.
A header row is optional. Cycles are tolerated by falling back to a relaxed left-to-right ordering, and the highest-value node sets the vertical scale. Up to 600 links.
Layout
Summary
- Nodes10
- Links10
- Columns4
- Largest flowPower → Industry (150)
Live preview
hover a node to trace its path
Flows
| Source | Target | Value | Share |
|---|---|---|---|
| Power | Industry | 150 | 20.8% |
| Coal | Power | 120 | 16.7% |
| Power | Homes | 110 | 15.3% |
| Gas | Power | 80 | 11.1% |
| Wind | Power | 60 | 8.3% |
| Solar | Power | 45 | 6.3% |
| Power | Export | 45 | 6.3% |
| Export | Revenue | 45 | 6.3% |
| Industry | Recycled | 40 | 5.6% |
| Homes | Recycled | 25 | 3.5% |
About this tool
The Sankey Diagram Generator assigns each node a column from the longest path that reaches it, sizes the nodes by their total throughput and draws every flow as a cubic-bezier ribbon whose thickness matches its value. Hovering a node traces the complete up- and downstream path and dims everything else, and dragging a node vertically re-lays its whole column without letting nodes overlap. Layout, interaction and PNG export all run in your browser.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Sankey Diagram Generator really free?
Yes. Sankey Diagram Generator is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Sankey Diagram Generator upload my data?
No. Sankey Diagram Generator runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Sankey Diagram Generator is ready to use on desktop or mobile.
Does Sankey Diagram Generator work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
More design & visual
CSS Gradient Generator
Create linear CSS gradients with a live preview.
CSS Box Shadow Generator
Build and preview CSS box-shadow values with one-click copy.
CSS Glassmorphism Generator
Generate frosted-glass CSS with backdrop blur and copy-ready styles.
QR Code Generator
Generate custom QR codes for any text or URL.
WiFi QR Code Generator
Generate a scannable QR code to share WiFi credentials instantly.
Letter Profile Picture
Generate avatar images from initials with custom colors.