Scientific charts from local data, with optional render styles.
Import CSV, TSV, or Excel data, map X/Y/error columns, edit axes and labels directly, and export high-resolution PNGs. Precise mode is the default; hand-drawn, milkyway, and sparse constellation are optional looks to try for teaching, talks, or public-facing material.
sample data: Raman spectra, D. Wales · Imperial College London · doi:10.14469/hpc/7135 (CC0)
Local data, precise defaults, optional looks
figgy starts with a conventional scientific chart. Render styles are opt-in alternate looks over the same underlying data, not a promise about how a chart will be received.
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Start with real data
Drag in CSV, TSV, or an Excel workbook and it opens as an editable sheet — every tab included, with X, Y and ±error columns guessed for you. Fix a value in the table and the chart follows.
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Try alternate render styles
Precise mode stays the default. Hand-drawn, milkyway, and sparse constellation are alternate looks you can compare when a chart is headed for teaching material, a talk, or public-facing context.
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Speaks science
Error bars (X, Y, or both), logarithmic axes, scientific notation and 10ⁿ tick labels, Greek letters, subscripts and superscripts — ΔG‡, x₀, cm⁻¹ — anywhere text appears.
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Click the thing you want to change
Click an axis to set its range. Click a label to restyle it. Drag the title or legend where you want it. No hunting through menus to find which setting controls which part of the figure.
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Built on a GPU renderer
figgy uses a Rust + WebGPU renderer in modern desktop browsers. The same engine draws precise and alternate styles; they are not decoration layered over a screenshot.
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Export PNGs for papers, slides, or video
Export high-resolution PNGs at 1–4×, or copy the image to your clipboard. For journal submission, check the required pixel size or DPI before export.
From data file to chart export in three steps
The studio opens your data as a table first, so you can check columns and values before making the chart.
1 · Drop your data
Drag a CSV, TSV, or Excel file onto the page — a workbook brings all its sheets along. Blank sheets are available too, if you want to paste values from another tool.
.csv · .tsv · .xlsx · copy & paste
2 · Select columns
Check the sheet, select the X/Y columns you want, and create a chart. figgy guesses common mappings, including nearby error columns, but you can remap them anytime.
X · Y · ±error · row range
3 · Tune and export
Edit axes, labels, legend, fonts, colors, and optional render styles, then export a PNG sized for your paper, slide, poster, or video workflow.
precise default · optional styles · PNG ×1–×4
↳ Curious what's underneath? It's open source — a Rust + WebGPU engine, documented in the repo.github.com/shim9610/figgy
Free and open source
figgy is MIT-licensed and runs in your browser tab. No trial period, no locked features, no “upgrade to export” — the studio you see here is the whole product.
We build it in the open because real lab data is the best test a charting engine can get. If something breaks on yours, tell us — that's the whole deal.
Your chart data is not uploaded to figgy. Plotting happens client-side, and saved .figgy projects are files you write to your own disk. The site may still load third-party resources such as fonts, ads, and the XLSX parser; the privacy page spells that out.
01No account, no project upload — open the page, load a file, and build the figure in the browser. Runs in up-to-date desktop browsers, nothing to install.
02Local chart data — unpublished data stays in the tab unless you save a .figgy project file yourself.
03Precise by default — alternate render styles are opt-in views over the same underlying data.
04Open source (MIT) — inspect it, host it yourself, or build on it. The repo is public on GitHub.
✎Using figgy in a paper? No obligation — but if you'd like to credit it, this line works in a methods or acknowledgments section: Figures were prepared with figgy, an open-source scientific graphing tool (github.com/shim9610/figgy).
Examples from the studio
A few studio states and exported charts. Precise charts stay the default; alternate render styles are shown as optional views over the same data.
Precise default
Clean figure view
A standard chart style for reports, paper drafts, and routine data checks.
Hand-drawn
Softer slide look
An optional sketch-like rendering for explainers, teaching, and informal slides.
Milkyway
Dark presentation style
A more expressive export look for talks when a dark chart fits the material.
Export
PNG output for figures
Exports preserve the chart composition you prepared in the studio, with scale choices for higher-resolution output.
Direct edit
Click chart parts to tune them
Axes, labels, titles, and legends open the controls for the thing you selected.
Data mapping
Start from table columns
Open a file, check the sheet, then map X, Y, and error columns into a chart.
Dense data
Keep large examples inspectable
Use the studio to inspect dense scatter plots and fit lines without leaving the browser.
Start with a precise chart.
Then try an alternate render style if it fits the material. Free, no account, and chart data is not uploaded to figgy.
