CSV → Plotly chart (SVG + PNG export)

Rules: • First column = X axis (must be parseable as date; header can be anything) • Other columns = numeric (blank cells allowed → gaps) • Pick up to 5 series to plot

Select series (max 5):

Display

Export uses Plotly’s native image export (SVG is true vector). We temporarily enable Plotly’s legend for export, so legend appears inside exported files.