1
Original Excel file
Select the earlier version
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Free browser-based XLSX comparison
Compare Excel Files Online and See Every Change
Upload two XLSX files to find changed values, formulas, worksheets, hidden rows and columns, then export the differences as CSV.
- Free
- No signup
- Files stay local
- XLSX up to 20 MB
Start a comparison
Choose two Excel files
2
Updated Excel file
Select the version you want to check
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Select two XLSX files to compare.
Your comparison result
0 detected changes
No supported differences found
The compared workbook content and supported structural signals match.
No changes match the current search and filter.
| Change | Worksheet | Location | Before | After |
|---|
This comparison covers the content and structural signals listed below. It is not a forensic or compliance audit.
Example comparison result
See exactly what changed
Each difference includes its worksheet, cell or range, change type, previous content, and current content.
Example
ChangeLocationBeforeAfter
Value changedBudget / B12$24,000$26,500
Formula changedForecast / F8=SUM(F2:F7)=SUM(F2:F7)*1.05
Row visibilityInputs / Row 14VisibleHidden
Workbook-level comparison
Find more than changed cell values
Compare Excel sheets inside two workbook versions and review each supported difference by type and location.
Cell values
See added, removed, and edited cell content by worksheet and address.
Formula expressions
Review formula-expression changes separately from ordinary values.
Workbook structure
Detect added or removed sheets, visibility changes, and used-range changes.
Hidden rows and columns
Surface hidden row and column changes as dedicated comparison entries.
Three local steps
How to compare two Excel files
Choose the original XLSX file
Select the earlier workbook version from your device.
Choose the updated XLSX file
Select the workbook version you want to check.
Compare, filter, and export the differences
Review supported changes and download the result as CSV.
Common workbook checks
Check workbook versions before they cause mistakes
- Review a revised budget before approval.
- Verify changes in a recurring report.
- Check a client or vendor workbook update.
- Create a CSV record of detected differences.
Clear product boundary
Supported comparison and current limits
WorkbookDiff currently supports `.xlsx` files up to 20 MB each. It does not support `.xls`, `.xlsm`, `.xlsb`, CSV, ODS, or password-protected files.
Formatting, charts, pivot tables, comments, named ranges, macros, formula recalculation, external-link resolution, author identity, timestamps, and reordered-row reconciliation are not compared.
Privacy by architecture
Your Excel files stay in your browser
The selected files are read into browser memory for the comparison. WorkbookDiff does not persist them in cookies, local storage, IndexedDB, or page URLs.
Validation events contain only coarse categories and numeric counts. They never include file names, worksheet names, addresses, values, formulas, or workbook bytes.
Frequently asked questions
Before you compare Excel files
How do I compare two Excel files online?
Choose the original XLSX file, choose the updated XLSX file, then select Compare Excel Files. WorkbookDiff lists the supported differences so you can filter them and export a CSV record.
Are my Excel files uploaded?
No. WorkbookDiff reads and compares the selected XLSX files in your browser. The comparison workflow does not upload workbook bytes.
What differences does WorkbookDiff find?
WorkbookDiff detects cell value and formula expression changes, added or removed worksheets, worksheet visibility changes, hidden row and column changes, and used-range changes.
Which Excel file formats are supported?
WorkbookDiff currently supports .xlsx files up to 20 MB each. It does not support .xls, .xlsm, .xlsb, CSV, ODS, or password-protected workbooks.
Does WorkbookDiff compare formatting, charts, or pivot tables?
No. The current comparison focuses on workbook content and structural signals. Formatting, charts, pivot tables, comments, named ranges, macros, and external-link resolution are outside the current scope.