Each row is compared as a line, so added rows show in green, removed rows in red, and an edited row shows both versions with the changed cell highlighted inside it.
In Excel or Google Sheets, select the range and copy it, then paste straight into the box — you do not need to save a CSV file first. Or use File → Download → CSV and drag the file onto the box.
A text comparison reads top to bottom. If the same rows appear in a different order in the two files, every row looks changed. Sort both by the same column before comparing and the real differences stand out immediately.
Checking what changed between last month's export and this month's, finding rows a colleague edited, verifying a data migration moved everything across, and reconciling two reports that should agree but do not.
Yes. Everything runs in your browser. Your rows are never uploaded, which matters when the export contains customer names, emails or payment data.