GTIN Validator Kit

Check every GTIN in your product file against GS1 rules and six retailer checklists, row by row, on your own computer.

What you get

• Every issue, row by row, with the fix: check digits, lengths, duplicates, company prefixes, and case-to-unit relationships.
• A corrected GTIN file to paste back into your product master or retailer portal.
• Checklists for Walmart, Costco, UNFI, Whole Foods, KeHE, and 1WorldSync, listing the GTINs that fail each one.
• A readiness score and a PDF report for your team or broker.

How it works

Save GTIN-Validator-Kit.html anywhere on your computer and double-click it. It opens in your web browser and works offline. Your file never leaves your computer.

What you need

Chrome, Edge, or Firefox. Tested on Windows. CSV or Excel (.xlsx) files up to 10 MB and 10,000 GTINs.

License, updates, and refunds: lailarallc.com/kits/gtin-validator