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Use this toolCompare two Excel or CSV files
Compare two tables using a key column, review differences and export a detailed report locally.
- 100% local
- Instant
- Free
- No account
- Works offline
- Batch processing
Your files are processed locally in your browser and are never sent to our servers.
Drop your file here
Recommended size: up to 40 MB
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Data preview
Compare two Excel or CSV files using a key column to find added, removed or changed rows.
Guide
How to use this tool
- 1
Import the files
Add the reference and comparison versions.
- 2
Select the key
Choose the column that uniquely identifies each row.
- 3
Review the report
Review and export detected differences.
Tips and best practices
- Work on a copy when your data is important.
- Review the result before reusing it in another application.
- Processing takes place directly in your browser.
Frequently asked questions
Why is a key column needed?
It reliably matches each row in the first file with its counterpart in the second.
Is my data uploaded?
No. Processing happens locally in your browser.
Can I use this tool for free?
Yes. The tool is free and requires no account.
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