Duplicate check Shopify Apps

GS1 Assistant (GTIN UPC EAN)

SKU and barcodes

Manage GS1 barcodes and prepare products for marketplace requirements. GS1 Assistant helps brands manage GS1 barcodes from Shopify instead of multiple GS1 portals. Assign UPC, EAN, or GTINs from your GS1 Company Prefix, prevent duplicates, and track remaining codes. For supported GS1 Member Organizations, products can be synchronized directly. For others, GS1 Assistant generates ready-to-upload spreadsheets so your data stays accurate and compliant. GS1 Assistant helps brands manage GS1 barcodes from Shopify instead of multiple GS1 portals. Assign UPC, EAN, or GTINs from your GS1 Company Prefix, prevent duplicates, and track remaining codes. For supported GS1 Member Organizations, products can be synchronized directly. For others, GS1 Assistant generates ready-to-upload spreadsheets so your data stays accurate and compliant. more Manage GS1 product data from Shopify Prevent duplicate barcodes that cause listing rejections Track remaining GS1 barcodes so you never run out unexpectedly See how Amazon, Walmart, and Google view your products in GS1 Export GS1-ready spreadsheets when direct integration is unavailable

SKU Manager | Fontaine

SKU and barcodes

Automate SKU and barcode generation. Bulk generate/format. Detect duplicates. Undo changes. Create SKUs and barcodes fast. Automate generation, check for duplicates, customize, conditionally update, and undo changes. See image previews for more info. Regular updates driven by merchant feature requests and suggestions. See the changelog for a list of recent additions. Create SKUs and barcodes fast. Automate generation, check for duplicates, customize, conditionally update, and undo changes. See image previews for more info. Regular updates driven by merchant feature requests and suggestions. See the changelog for a list of recent additions. more Bulk/automatically generate SKUs & Barcodes. Format existing SKUs / Barcodes: replace, uppercase, or lowercase Duplicate checking across all product variants Automatically generate SKUs when a new variant is created Conditionally update SKUs & Barcodes based on product title, variant & more

SKUGen SKU & Barcode Generator

Bulk editor

SKU Generator, print retail barcode labels, custom product label printing and duplicate protection. A SKU generator and barcode generator built for stores with growing catalogs. Generate SKUs from product data with prefixes, suffixes and abbreviations, while catching duplicate SKUs automatically. Create barcodes in GTIN, UPC, EAN and Code128 formats, then print retail barcode labels for products and variants from Shopify or CSV files, including Stocky exports. Use customizable label templates and bulk actions to move faster as you scale, with help from support in English. A SKU generator and barcode generator built for stores with growing catalogs. Generate SKUs from product data with prefixes, suffixes and abbreviations, while catching duplicate SKUs automatically. Create barcodes in GTIN, UPC, EAN and Code128 formats, then print retail barcode labels for products and variants from Shopify or CSV files, including Stocky exports. Use customizable label templates and bulk actions to move faster as you scale, with help from support in English. more Automatic and bulk SKU generation with prefixes, suffixes and duplicate checks Bulk barcode generation (GTIN, UPC, EAN, Code 128) Retail barcode labels with custom templates, layouts, sizes and images Print labels from Shopify products, variants or CSV files, including Stocky QR codes, Liquid label templates, Automatic SKU generation upon product creation