Track Changes Between Spreadsheet Versions

Compare two versions of your data and instantly see what was added, removed, or modified. Perfect for auditing and version control.

Your data stays on your computer.

This app runs entirely in your browser. Your files are never uploaded, sent, or shared. Everything happens locally, on your machine.

Start Comparing Files How It Works

Original File

The "before" version

File A Drop file here or click to browse CSV, Excel (.xlsx, .xls)
SWAP

New File

The "after" version

File B Drop file here or click to browse CSV, Excel (.xlsx, .xls)
Simple & Powerful

How It Works

Three simple steps to track changes between your file versions

1

Upload Both Versions

Add your original file and the new version. Drag and drop or click to browse. Supports CSV and Excel formats.

2

Select Key Column

Choose the column that uniquely identifies each row (ID, SKU, Email). Smart detection suggests the best match.

3

See All Changes

Instantly view added, removed, and modified rows with color-coded highlights. Export to CSV, Excel, or PDF.

Why Choose DataChanges Pro?

Professional change tracking with powerful features

Smart Key Detection Auto-detects ID columns for quick setup
Color-Coded Results Added, removed, and modified rows highlighted
Detailed Change Stats See exactly what changed with full metrics
100% Private All processing in your browser, no data uploads
Multiple Export Formats Export changes to CSV, Excel, or PDF
Re-run Comparison Save settings and quickly re-compare files
No files uploaded No account required One-time purchase, no subscription Your data stays on your computer

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Data Preview