Type one flow per line as Source [value] Target and get a clean Sankey diagram with auto-laid columns, proportional node heights, and curved flow ribbons. Export as SVG or PNG. Everything runs in your browser.
Each non-empty, non-comment line is one flow. Both of these forms work and can be mixed:
Salary [4500] Take-home Take-home [1800] Rent Take-home, 1200, Groceries # lines starting with # are ignored
Names are case-sensitive. Cycles are rejected (a Sankey diagram is a directed acyclic flow). Column position for each node is its longest path from any source, so flows always read left-to-right.