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Toolzum

Chart Maker

Build bar, line, pie, doughnut, area, and horizontal-bar charts from a label/value table (minimum 2 rows) with 10 ten-color palettes, title/axis labels, background, and labels/legend toggles. Canvas renders at device-pixel-ratio sharpness, width 400–2000px, height 300–1200px — exports PNG named after your title. Photos never leave your device — processing runs locally in your browser with Canvas and WebAssembly.

Runs on Canvas

100% Local Browser Native

How to Use the Chart Maker

1. Enter the data table

Label + numeric value rows (min 2, Add Row for more); non-numeric values become 0, non-positive rows hide except on line/area.

2. Style the chart

One of 6 types, one of 10 palettes (Vibrant default), title, axis labels, canvas size, background, labels/legend.

3. Generate and download PNG

PNG only, saved as <title>.png. Back to Editor re-opens the table.

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Frequently Asked Questions

Which chart types?

Bar, line, pie, doughnut, area, and horizontal bar — six total. Pie/doughnut print slice percentages to 1 decimal with a center total on doughnuts; line/area smooth with bezier curves.

How do I add data?

Type label/value rows directly (3 demo rows preload: A/50, B/80, C/35); 2 rows minimum, Add Row for more. Series colors cycle the active 10-color palette in order.

Export options?

PNG only, named after your chart title. Canvas width 400–2000px (default 800) and height 300–1200px (default 500), rendered at devicePixelRatio for crisp slides and posts.

Is my work uploaded anywhere when using Chart Maker?

No — charting runs locally in your browser on Canvas; unlimited saves on local tools.

Last updated October 2026