PRIVATE CSV COMPARISON
Stop comparing spreadsheets cell by cell.
Drop a before and after CSV. What Changed? matches the same records across both files and shows what was added, removed, modified and unchanged.
🔒 Files stay on your device✓ No signup✓ CSV contents are not uploaded
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Choose two CSV files to begin.
PRIVACY FIRST
Your data stays yours.
Your CSV files are read, matched and compared inside your browser. What Changed? does not upload your CSV contents to a backend.