I made a small browser tool for comparing an original CSV with an edited copy. It can review product exports or other keyed tables, such as item lists and localized text. The early prototype is free:

https://asafdallal.itch.io/catalog-change-guard

I'm looking for feedback from people who recently edited a CSV. Try the fictional example first: there is one intended price change, one cleared vendor, one missing record and one new record. CSV contents are processed in the browser; there is no store connection or catalog upload.

Two things I'd like to learn:

1. Is it clear which change was intended and which ones need review?

2. Would this catch anything your current checking process misses? A confusing or unnecessary finding is just as useful to hear about.

The code and text are AI-assisted. Other free comparison tools exist, so I'm trying to find out whether this particular report helps. It doesn't simulate an import or guarantee store safety. Please share a short description in the comments rather than private CSVs, customer details or credentials.