The European Article Number (EAN), now officially designated as the International Article Number under GS1, is a 13-digit barcode standard used worldwide to identify retail products. EAN-13 is the global counterpart to the North American UPC-A, and the two are fully interoperable—a UPC-A is simply an EAN-13 with a leading zero in the country code position. The 13 digits in an EAN-13 comprise a 2–3 digit GS1 Prefix (indicating the country or organization that assigned the Company Prefix), a Company Prefix (6–9 digits, assigned by GS1), an Item Reference (variable length), and a single check digit. EAN-13 is mandatory for products sold in Europe, Asia-Pacific, Latin America, and increasingly required by global retailers even for North American brands.

EAN-8 is a compressed 8-digit variant analogous to UPC-E, designed for very small packages where EAN-13 would be too large. Its structure includes a 2–3 digit GS1 Prefix, a 4–5 digit item number, and a check digit. Both EAN-13 and EAN-8 are governed by the ISO/IEC 15420 standard and can be printed at magnification factors from 80% to 200% of the nominal size. The quiet zones (blank margins on each side of the barcode) are critical for reliable scanning—insufficient quiet zones are a leading cause of scan failures in high-throughput retail environments.

Manufacturers applying for EAN numbers must join GS1 through their national GS1 member organization. Products sold through Amazon, Walmart, Target, and most global retailers require a valid GS1-registered EAN or UPC—resold or gray-market barcodes are not accepted. A Zebra ZD621 label printer and Honeywell DS3678 scanner form a reliable combination for printing and verifying EAN-13 labels in a distribution center environment. Label verification using a barcode verifier (which grades print quality per ISO/IEC 15416) is strongly recommended before shipping to major retailers to avoid chargebacks.