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COMPARISON / CSV ↔ CSV

CSV Compare by Key

Two files. One shared key. Find out exactly what changed between your CSVs.

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CSV
UTF-8 · Up to 5 MB
CSV
UTF-8 · Up to 5 MB
Use a unique column, such as an ID.

Compare records, not row numbers.

Add the original and updated CSV, choose a shared key column, then select Compare files. Row and column order do not affect the match.

Precise, predictable matches

Keys must be non-empty and unique in each file. Values are case-sensitive and compared exactly, including spaces. Added or removed columns count as changes for matched rows. A header-only file is valid.