Spreadsheet comparer
Compare Two Excel or CSV Files
Compare two Excel files online to see exactly what changed between an older spreadsheet and a newer version. SheetSweep matches rows by an ID, email, SKU, or any other shared key column.
The comparison separates added rows, removed rows, and changed cells instead of forcing you to scan two sheets side by side. It also works when you need to compare two CSV files or TSV files.
Formulas are never executed during comparison, and ordinary negative numbers remain numeric. Both source files stay untouched.
Open the ComparerPrivate by design. Your files never leave this browser tab — no uploads, no servers, no signup. What happens in your spreadsheet stays in your spreadsheet.
1Add the old and new filesChoose two CSV, TSV, XLSX, or XLS files and select sheets when needed.
2Choose a shared keyMatch records by ID, email, SKU, or another column the files share.
3Review every differenceSee added rows, removed rows, and changed cells in a clear comparison.