Shelfmark ‑ Multiple Barcodes

Shopify allows one variant to hold up to twenty barcodes, but adding them means typing each code by hand, one at a time. If you stock 500 variants with two barcodes each, that's 500 separate edits. Shelfmark loads every extra barcode from a single CSV file. Before anything changes, your file is checked against your catalogue. Each problem appears in plain English: duplicate codes, barcodes already assigned to another product, variants at their limit, or check digits that don't match. You review the full list before any product is updated. Search for products using any barcode, not just the primary one. The app only requests product data—never your orders, customers, or personal information. Add multiple barcodes at once and catch clashes before they cause issues.