Compare Two Spreadsheets

How it works

1. 1

   Add both files

   Drop in the original file and the one you want to compare it against.

2. 2

   Choose how rows are matched

   Line rows up by position, or pick a key column so each record is matched by its ID regardless of order.

3. 3

   Review the differences

   See added, removed and changed rows, with the exact cells that differ highlighted.

Frequently asked questions

How are rows matched between the two files?

By default they are matched by position: row 2 against row 2, and so on. If rows have been reordered or inserted, choose a key column, such as an ID or email, and each record is matched by that value instead, so a row that simply moved is not reported as both removed and added.

Does it show which cells changed, not just which rows?

Yes. For a row that exists in both files but differs, the specific cells that changed are marked, so you can see at a glance whether a price, a status or a name was updated rather than scanning the whole row.

Can it compare an Excel file against a CSV?

Yes. Each file is read into a simple table first, so you can compare two CSVs, two workbooks, or one of each. For workbooks with several sheets, you pick which sheet to compare.

Is my file sent to a server?

No. Everything runs locally in your browser. Your file is read and processed on your own device, nothing is uploaded, and nothing is logged or stored.