FILE A
FILE B
How to use
- Upload the first CSV file (original) and the second CSV file (modified).
- Click 'Compare CSV' to highlight differences between the two files.
- Review, download, or copy the comparison results for analysis.
Why use this tool?
100% Free
Use the CSV Diff Tool completely free with no sign-up or limitations.
Accurate Comparison
Identify differences in rows, columns, or values with precise highlighting.
Instant Results
Compare CSV files immediately with fast and reliable processing.
Developer & Analyst Friendly
Perfect for data analysts, developers, and anyone handling CSV data updates.
Secure & Private
All CSV data is processed locally in your browser and never stored or shared.
Cross-Platform Support
Works on Windows, Mac, Android, iOS, and all modern browsers.
Frequently asked questions
Is the CSV Diff Tool free?▼
How do I compare two CSV files?▼
What types of differences are detected?▼
Is my data secure?▼
Can I compare large CSV files?▼
Which devices are supported?▼
About CSV Diff Tool
Find differences between two CSV files This free online tool runs entirely in your browser — no files are ever uploaded to our servers, ensuring your data stays private and secure. No registration, no watermarks, no limits.