DATA & SPREADSHEET TOOLS

CSV Compare

Find what changed between two versions of a spreadsheet. Match by an ID column and review added, removed, or edited records.

✦ Private in this browser↔ Compare by unique ID▦ CSV up to 10 MB↓ Export differences

Private by designYour files stay in this browser. Nothing is uploaded.

01 · ORIGINAL

First CSV

Choose first file

The earlier version of your data.

02 · NEW VERSION

Choose second file

The data you want to check.

Your comparison will appear here

Choose two CSV files to match rows and spot every change.

CSV files up to 10 MB and 50,000 rows each · Commas, tabs, and semicolons detected automatically · Files stay on your device

A SIMPLE WORKFLOW

1
Pick two CSV files
Choose the earlier file and the updated version from your device.
2
Choose their shared key
Match each record using a unique ID column included in both files.
3
Review and export
Check changed fields and download a concise differences report.