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Charttoolbox
Free in-browser charts — paste CSV, export PNG/SVG
What is Charttoolbox?
Charttoolbox turns spreadsheet data into bar, line, pie, scatter, histogram, heatmap, and correlation charts entirely in the browser. No account, no watermark, no server upload.
Key features
- Upload CSV, Excel, or pasted tables with ease.
- Generate heatmaps and correlation matrices automatically.
- Process all spreadsheet data locally in your browser.
- Customize palettes, labels, and scale with live preview.
- Export high-resolution PNG or editable SVG files.
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