GTIN SSCC Barcode Preflight

About

GTIN SSCC Barcode Preflight helps logistics, retail, warehouse, ERP and marketplace teams catch formal barcode-data errors before product upload, WMS entry, label print, EDI preparation or shipment processing.

Paste barcode text, read the clipboard, check selected text, scan the visible page, or open a larger workbench. The extension reviews GTIN/EAN/UPC codes, SSCC-18 shipment container codes, GLN-13 location numbers and common GS1 Application Identifier element strings.

Local checks include:

- GTIN-8, GTIN-12/UPC, GTIN-13/EAN and GTIN-14 check digits
- SSCC-18 check digits
- GLN-13 check digits
- GS1 AI 00 SSCC
- GS1 AI 01/02 GTIN
- GS1 AI 11/13/15/17 YYMMDD dates
- GS1 AI 310n/320n net weight decoding
- GS1 AI 10 batch/lot and AI 21 serial detection
- all-zero identifier rejection
- duplicate valid code warnings

Everything runs locally in your browser. There is no GS1 registry lookup, marketplace lookup, product catalog lookup, label-print integration, server, login, analytics or remote code.

Important: this is a formal local preflight. It does not confirm product ownership, GS1 prefix ownership, product existence, marketplace acceptance, label print quality, barcode scan quality, regulatory compliance or legal compliance.