How to Compare Two Excel or CSV Files Online
- Select File A: Upload your original baseline spreadsheet (.xlsx, .xls, or .csv).
- Select File B: Upload the updated or modified version of the spreadsheet.
- Compare: Click "Compare Spreadsheets". SheetBox instantly scans both files row-by-row.
- Review differences: Green rows indicate newly added data in File B, and struck-through red rows indicate entries missing from File B.
Why Compare Spreadsheets with SheetBox?
- Total Data Confidentiality: Unlike typical online diff tools where your sheets upload to unknown cloud servers, SheetBox runs entirely on your local machine using SheetJS. Sensitive client lists, internal pricing, and salary tables never leave your browser.
- Cross-Format Compatibility: Seamlessly compare an Excel workbook against an exported CSV or TSV file without converting beforehand.
- Instant Execution: Zero network latency or upload lag—even sheets with thousands of rows compare in seconds.
Frequently Asked Questions (FAQ)
Does SheetBox support multi-sheet workbooks?
Yes. The tool automatically reads the first active sheet in each uploaded workbook for comparison.
Is there any file size or row limit?
There are no arbitrary server restrictions. Processing capability depends entirely on your device's available browser memory.