Compare CSV Datasets Instantly
Privacy-first CSV difference engine. Everything runs 100% inside your browser.
● Before Snapshot
● After Snapshot
🔒 Files stay strictly local. No cloud storage or remote servers used.
How it works
1
Upload Datasets
Select your original and modified CSV files directly in your browser.
2
Auto-Match Keys
The algorithm automatically identifies primary keys and diffs field-by-field.
3
Inspect Diffs
Instantly audit added, removed, modified, and unchanged records.
🛡️ Privacy First
- ✓ Your CSV files never leave your computer.
- ✓ No cloud processing.
- ✓ No account required.
- ✓ One-time purchase.
- ✓ Premium unlocked with a license key.
We collect basic, anonymous operational metrics to improve CSV Compare, but we never collect, upload, or analyze your data.