Data Visualizer guide
Format your data, pick a chart type, and export images — all in your browser.
CSV format
One row per item. Use a comma, semicolon, or tab between columns.
Label,Value
January,120
February,190
For multiple series, add more value columns:
Category,Planned,Actual
Marketing,5000,4800
R&D,12000,12500
Excel files
Load .xlsx or .xls directly, or download a template, edit in Excel/LibreOffice, and reload. Files never leave your device.
Chart options
- Chart title — shown on the chart and included in exports.
- Color palette — Gadly, pastel, high contrast, or blue mono.
- Sort data — by label or total value before drawing.
- Top N — for pie charts, group smaller slices into “Other”.
- Show values — display numbers on bars or pie slices.
- Horizontal bars — useful for long category names.
- Suggest chart type — auto-picks bar, line, or pie from your data.
Export & share
Download PNG, SVG, or PDF after generating a chart. Use “Copy link” to save your dataset and settings in the URL (best for small datasets).
Common issues
- Use numbers with a dot or comma decimal separator (e.g. 1.234,56 or 1234.56).
- Remove empty rows and extra columns you do not need.
- If Excel shows dates as numbers, format cells as text or export as CSV.