Excel diff: every row added, removed or changed between two versions
Monthly replay · coming soon
Set it up once. Run it again every month.
Running the same diff every month? Save it once: key column, compared columns, header row, date order. Next month, drop the two new versions and get the diff with the same rules.
- Key
- SKU
- Compared
- Description, Unit Price, Effective Date
- Dates
- Month/Day (US)
- Header row
- 1
Same result · verifiable privacy
Run the same diff twice, get the same rows
Each changed cell is shown with its old value struck through and its new value beside it, and the result can be exported to XLSX or CSV.
- Your files never leave your browser
- Same files, same result, every time
- Replay the same comparison next month (coming soon)
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The same result, every time
The same two files always give the same comparison, with the same rules. No AI touches your data.
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Privacy you can verify
All the work happens in your browser. Open the network panel while you compare: no file is sent anywhere.
Verify what leaves your browser
What you get
A diff of values, not of formatting
Tabulys compares what the cells hold. A sorted sheet, a currency sign or another number format is not reported as a difference.
| Change | SKU | Description | Unit price | Effective date |
|---|---|---|---|---|
| Unchanged | TX-0205 | Cable tray 2 m | 1,200.00 = 1200 in file B, not a change | 2026-10-01 |
| Added | TX-1042 | Steel bracket 40 mm | 12.50 | 2026-11-01 |
| Removed | Wall anchor, pack of 50 | 8.90 | 2026-09-01 | |
| Modified | TX-0311 | Hex bolt M8 | 2026-10-01 |
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No false differences
Currency signs, thousands separators, formatted XLSX against raw CSV: not counted as changes.
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Duplicate keys are flagged
A key that appears twice is reported and its rows set aside, not silently matched to the wrong row.
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Ambiguous dates? It asks.
When a date could be US or UK order, Tabulys shows the doubt and lets you decide. Nothing is settled behind your back.