Open the old and the new version of a sheet and see exactly what changed: new rows, deleted rows and every edited cell, with the old and the new value side by side.
Your files never leave your device
With a key column such as an ID, product code or e-mail, rows are matched even if they were sorted differently, and you see true additions and deletions. Without a key, row 1 is compared with row 1, row 2 with row 2, and so on.
Ignore differences in capital letters and extra spaces if they do not matter to you. Values are compared as they are displayed in the sheet, so 1,000 and 1000 formatted the same way count as equal.
No. Both files are read and compared in your browser and never leave your device.
Yes. Any combination of XLSX, XLS, XLSM, XLSB, ODS and CSV works.
When both have header rows, columns are matched by name; a column that exists in only one file shows its values as changed from or to empty.
Any column whose values are unique per row: an ID, an invoice number, an e-mail address or a product code.
Yes, with a key column the order does not matter.
Three sheets: Added, Removed and Changed (key, row numbers, column, old value, new value).