I will compare two product catalog CSV files and flag sku changes

Need to compare a supplier file against your current catalog before an update? I will compare two CSV files by exact, case-sensitive SKU and deliver a structured difference report.

Included: up to 50 data rows in each file; compare title, price, stock and variant fields; identify new or missing SKUs; flag blank or duplicate SKUs as ambiguous instead of choosing a match; one JSON report. Required headers are sku, title, price, stock and variant. If your headers differ, provide a field mapping.

This is a read-only file comparison. I do not merge or alter files, choose which values are correct, remove duplicates, create an import file, or update your store. Values are compared exactly, so 1.0 and 01.00 are different. Malformed CSV rows may be marked ambiguous; invalid quoting that prevents complete parsing must be corrected before comparison.

Please upload both CSVs, label supplier vs current catalog, and remove customer or other sensitive data. No store login or API access is needed. For complex variants, additional fields, or more than 50 rows per file, message me for a custom scope before ordering.