Shopify / CSV / safe update
Review a Shopify product CSV update before saving it.
Compare a base product CSV with a proposal locally, review changed, blank-held, and unchanged cells, then save only approved rows. Nothing is sent to Shopify.
Compare base and proposal CSVs
Fixed columns: Handle,Title,Variant SKU,Option1 Name,Option1 Value,Variant Price. Proposal columns may be reordered; rows match by Handle + Variant SKU.