Spreadsheet-aware diff

CSV Compare Tool

Paste two CSV exports, choose a key column, and compare matching records cell by cell. Reordered rows and columns do not create false changes.

No upload Free to use Works on mobile

Data tool

CSV Compare

Original CSV 0 characters Updated CSV 0 characters

Delimiter Column name

0 results

Include the header row and use consistent delimiters.

Use an ID, email, SKU, URL, or another unique field to match records.

See added keys, removed keys, and changed cells for shared records.

Compare source and destination exports by record ID.

Find added products, removed SKUs, and changed prices.

Compare contacts even after a file was sorted differently.

Is CSV Compare free to use? +

Yes. CSV Compare is free to use without an account or usage meter.

Is my data uploaded or stored? +

No. The processing for this tool runs locally in your browser. Entered content is not sent to our server.

What happens when the row order changes? +

Rows are matched by the selected key column, so sorting differences do not affect the comparison.

Keep working

Deduplicate CSV records by one or more columns while preserving headers and the first matching row. Runs locally in your browser.

Sort CSV records by a selected column in ascending or descending order while preserving quoted values and headers.

Filter CSV rows using contains, equals, starts-with, ends-with, or regular-expression matching on a selected column.

Convert CSV rows into a JSON array of objects using the first row as property names. Handles quoted delimiters locally.