1. Choose a file
Open a CSV or XLSX up to 8 MiB, or load the fictional Fern & Field catalog. For XLSX, choose the worksheet that contains the catalog. Select the record containing headers. Preview cells as text and check whether identifiers and prices arrived as expected.
2. Map columns
Check the suggested matches and map Title. Add optional fields where the supplier data supports them. Group variants and extra images with an explicit shared URL handle. Save a profile if you get repeated catalogs from the same supplier.
3. Review and fix
Run validation. Blocking errors must be resolved before you can export. Fix editable cells in Review and fix, or make structural edits in a copy of the source spreadsheet. Preview price changes and choose a decimal format when the source notation is ambiguous.
4. Export
Download the UTF-8 CSV with draft products and import a small sample of new handles in Shopify first. Review Shopify’s overwrite setting. Download the optional validation report if you need a checklist of outstanding issues. See the Shopify CSV reference for details.