Compare Two CSV Files Before Import or Update
Compare two CSV files locally and flag added, removed, duplicated, blank-key, and changed rows for review before import or update.
Files stay in your browser. No upload. No account. No storage.
What CSV Compare Report v0 reviews
- Compare old vs new CSV files before import or update
- Match rows by a stable key such as SKU, ID, email, handle, record ID, or domain
- Review rows only in File A
- Review rows only in File B
- Find duplicate keys
- Find blank keys
- Review changed fields
- Download review rows and a local HTML report
Start with a stable key
A compare report needs a reliable matching field: SKU, product ID, email, handle, record ID, account number, or domain. Blank or duplicate keys should be reviewed first.
Separate missing and changed rows
Review rows only in the old file, rows only in the new file, duplicate keys, blank keys, and changed fields before sending an update into another system.
Keep review rows local
Argon is local-first: files stay in your browser. Download rows only in File A, rows only in File B, changed fields, duplicate keys, blank keys, and an HTML report.
Argon flags differences for review. It does not determine which file is authoritative and does not guarantee platform import behavior.
Files stay in your browser. No upload. No account. No storage.
Local CSV Compare Report v0
File A - old, original, or current
Use this for the file you already have or the current export.
File B - new, updated, or incoming
Use this for the incoming file you want to review before import or update.
Choose the matching key
Use a stable key like SKU, email, ID, handle, or domain. Do not use row number if rows may have been reordered.