◆ Excel & CSV datalogs · in-browser

Overlay Excel and CSV datalogs on one time axis

Have telemetry in a spreadsheet? Load Excel or CSV datalogs and overlay every column on one shared timeline. Measure, annotate, align and scale — all parsed privately in your browser, nothing uploaded.

The demo runs on built-in sample telemetry. Buy a license to load your own logs.

Reading Excel datalogs, without the friction

A lot of telemetry ends up in a spreadsheet — exported from a controller, logged by a script, or hand-assembled. Overtrace opens Excel and CSV files, detects your time column, and lets you overlay any of the value columns on one timeline without wrestling with chart wizards.

Nothing is uploaded. Overtrace parses the spreadsheet in your browser, so even sensitive data stays on your machine while you measure, annotate and align.

.xlsx workbooks.csv exportsController CSV dumpsScript-logged data

What people use it for

Plot without chart wizards

Skip building Excel charts by hand — drop the file in and pick the columns you want overlaid.

Mix spreadsheet + native logs

Overlay a CSV export alongside a Caterpillar or Waukesha log on the same time axis.

Quick measurement

Drop measurement points on any column to read exact values and deltas instantly.

Excel datalog FAQ

Can Overtrace open Excel and CSV files?

Yes. Overtrace reads .xlsx and .csv datalogs, detects the time column, and lets you overlay any value columns on one time axis.

Is my spreadsheet uploaded to a server?

No. Overtrace parses the file locally in your browser. There is no upload endpoint — your data never leaves your machine.

Do the columns need special formatting?

No strict format is required — Overtrace auto-detects a time column and numeric value columns. Clean, consistent headers work best.

Can I overlay a CSV with a Caterpillar or Waukesha log?

Yes. Overtrace lets you combine spreadsheet data with native datalog formats and align them on one shared time axis.

Open a Excel log right now

Try the demo on sample telemetry, then load your own Excel logs with a license. Nothing is uploaded — it all runs in your browser.