CSV Compare

Compare CSV Files Online.

Compare two CSV files and instantly see what changed — added rows, removed rows, and modifications.

Your files never leave your device

How to compare

Upload your original CSV — the baseline version you want to diff against
Upload your updated CSV — the newer export or revision
Click Compare Files to see added, removed, and unchanged rows

File A Original

Drop your original CSV here, or click to browse

CSV files · Processed locally · Max recommended 50 MB

File B Updated

Drop your updated CSV here, or click to browse

CSV files · Processed locally · Max recommended 50 MB

Choose both files above to begin comparing

Processed locally in your browser · Nothing is uploaded

Compare CSV Files Online

Quickly diff two CSV files to find what changed between versions. Perfect for validating data migrations, checking export updates, or auditing dataset modifications — all without uploading files to a server.

Frequently Asked Questions

How does CSV Compare work?

Both files are parsed locally and rows are compared by content. Added, removed, and changed rows are identified and displayed.

Can I compare files with different column orders?

Comparison is positional by row content. For best results, ensure both files have the same column structure.