Free browser-based Sankey diagram maker. Easily enter or import data, customize formatting, and export as PNG, PowerPoint or Instagram-ready images - no account needed.
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Maker
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I built SankeyGen because I wanted a more efficient way to enter data into a free Sankey tool.
SankeyGen supports both a simple table editor with full path entries and raw CSV import/paste. Getting data into the right format for the CSV is quick with the provided template.
The tool is useful for monthly budget breakdowns, energy/material flow diagrams, and funnel visualizations for reports and presentations. I'm excited to learn about additional use cases.
I would love feedback, especially on what's missing or confusing. Thanks for checking it out!
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Love how friction-free this is, no sign up just to sketch out a flow. One thing that would save me a bunch of time: letting me save sessions locally so I can come back and tweak a diagram instead of redoing it.
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Maker
@melahat38429 There is a save session / load session feature that allow you to do just that! Thanks for checking out the tool.
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Adding CSV column mapping when importing data would save a lot of time. Right now I have to manually rearrange my spreadsheet headers to match the expected format, and it would be much smoother if I could just pick which columns are source, target, and value during import.
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Maker
@emelqbne Good idea. I'll consider this for a future update. Thanks for checking out the tool.
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Love that you skipped the account gate entirely for a tool like this. The Instagram-ready export sizing is a really thoughtful touch most diagram tools ignore.
Love how friction-free this is, no sign up just to sketch out a flow. One thing that would save me a bunch of time: letting me save sessions locally so I can come back and tweak a diagram instead of redoing it.
@melahat38429 There is a save session / load session feature that allow you to do just that! Thanks for checking out the tool.
Adding CSV column mapping when importing data would save a lot of time. Right now I have to manually rearrange my spreadsheet headers to match the expected format, and it would be much smoother if I could just pick which columns are source, target, and value during import.
@emelqbne Good idea. I'll consider this for a future update. Thanks for checking out the tool.
Love that you skipped the account gate entirely for a tool like this. The Instagram-ready export sizing is a really thoughtful touch most diagram tools ignore.
@aysimatruc Thanks for checking it out!