Question 1

Is the Sankey diagram maker free?

Accepted Answer

Yes. Generate 5 Sankey diagrams free per day with no signup or credit card required. Free generations render at standard quality. Paid plans start at $9/month for more generations, higher quality renders, and full commercial rights.

Question 2

What if the AI gets the flow proportions wrong?

Accepted Answer

The AI reads the numbers in your prompt and renders arrow widths to match. For unusual or ambiguous data the AI may approximate — you can ask the agent to "fix the proportions" or "make the heat-loss arrow wider" and it will revise in place. For audited financials or scientific reports, spot-check the rendered widths against your source numbers before sharing.

Question 3

Can I use the Sankey diagrams I generate commercially?

Accepted Answer

Yes on paid plans. The free tier is fine for personal, educational, and internal use. For client work, marketing assets, published articles, or anything where the diagram represents commercial value, the $9/month Lite plan and up grant full commercial rights to everything you generate.

Question 4

How many stages can my Sankey diagram have?

Accepted Answer

Two to about six stages renders cleanly. Beyond that the diagram starts to feel cramped and harder to read. If your flow has more than 25 nodes, consider splitting it into two diagrams or rolling smaller categories into an "Other" bucket.

Question 5

Can I make an income statement or budget Sankey?

Accepted Answer

Yes — these are two of the most common requests. Give the AI your numbers: "Q3 revenue $40M split between products and services, COGS $15M, opex $12M, net income $13M" and it will draw the standard top-down income-statement layout. Same for personal budgets: "$6,000 take-home → $1,800 rent, $1,200 savings, $900 food, $600 transport, $1,500 other."

Question 6

Can I download the templates as PDF?

Accepted Answer

Templates download as PNG at high resolution, suitable for printing or pasting into Word, PowerPoint, Google Docs, or Notion. For PDF or SVG, generate a labeled diagram with the tool at the top of the page — paid plans include SVG export.

Question 7

Will there be a watermark on my Sankey diagram?

Accepted Answer

No. Free generations and templates download without watermark. Some premium styles and higher-quality renders require credits, but the free tier produces shareable diagrams with no branding overlay.

Question 8

Which Sankey diagram style should I use?

Accepted Answer

Corporate Clean — board decks, annual reports, anything for finance or executive audiences.
Editorial — magazine articles, blog posts, LinkedIn shares.
Academic — research papers, textbooks, lab reports, energy audits, GCSE/A-level physics.
Hand-drawn — casual social posts, internal team docs, anything that should feel approachable.
Blueprint — technical documentation, engineering reports.
3D Isometric — high-impact infographics and standout posts.

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Sankey diagram examples across subjects

Sankey diagram templates in three styles

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