SheetlightData insights
Private by design · Analyzed on your device
Local by design · No upload required

Find the story in your spreadsheet.

One file. A clearer picture. See what stands out, compare the numbers, and take away a clear summary. Your data stays on your device.

Drop your file here.

Excel, CSV or TXT

Choose a file ↗

Your file stays on this device.

File types & limits

CSV and TXT: up to 500 MB. Excel (.xlsx / .xls): up to 50 MB, one sheet at a time.

Up to 100 columns. Detailed views support 100,000 entries / 2 million cells (TXT: 1 million entries / 5 million cells). Larger text tables use a full-file summary with a smaller set of calculations. Each entry can contain up to 1 million characters.

TXT needs a table separated by tabs, commas, semicolons or pipes. Excel sheets support 100,000 entries and 2 million cells. Saved formula values are used without recalculation.

01Bring your spreadsheet

Select an Excel workbook, CSV, or TXT from your device.

02Get the first read

See the key numbers and what they mean.

03Explore what matters

Explore patterns and export your insights.

Prototype v0.19 · Excel, CSV & TXT · Analysis stays on your device. Export a standalone insights report.