Paste a GS1 Digital Link URL or an AI element string — we validate every Application Identifier against the GS1 General Specifications. No sign-up.
Paste a GS1 Digital Link URL, a parenthesized AI string, or an FNC1 element string. We validate every AI against the GS1 General Specifications — check digits, date formats, length constraints.
GS1 (Global Standards One) manages the barcode and identification standards used by over 2 million companies across 150+ countries. When a retailer, distributor, or marketplace says a product needs to be "GS1 compliant," they mean the code on the label — whether it's a barcode or a QR-encoded GS1 Digital Link — carries a valid GTIN (Global Trade Item Number) and follows GS1's formatting and check-digit rules.
Getting it wrong means chargebacks, rejected shipments, and lost retail partnerships. This checker validates against the same rules a retailer's system will apply — check digits, date formats, and Application Identifier lengths — so you can catch a bad code before it ever reaches a scanner on the shelf.
GS1 manages the global barcode standards used by retailers and supply chains worldwide. A "GS1 compliant" code carries a valid GTIN (or other Application Identifier data) that passes GS1's check-digit and formatting rules — the requirement most retail and wholesale partners enforce before they'll accept your product.
A GS1 Digital Link URL (e.g. stackedpixels.com/01/.../10/.../17/...), a parenthesized Application Identifier string (e.g. (01)0952.../10/ABC123), or a raw FNC1 element string. Paste any of the three and the checker detects the format automatically.
Yes — the checker validates GTIN and SSCC check digits, date-field formatting (YYMMDD), and Application Identifier length constraints, not just whether the string parses. A code can look right and still fail on a bad check digit.
No — the checker runs entirely in your browser and works with no sign-up. If you want to generate GS1-compliant dynamic QR codes and labels from the results, that's where a StackedPixels account comes in.
Create your first dynamic code free, then design and print labels straight from the same dashboard.
Create your first dynamic code