GS1 Digital Link: the QR that becomes a passport

A QR code is just a way to encode text. The real question isn't how you encode it, but where that text leads. For the Digital Product Passport (DPP), the answer is a precise, future-proof standard: GS1 Digital Link.

From code to web address#

Products have had an identifier for decades: the GTIN, the number behind the barcode. GS1 Digital Link takes that GTIN and turns it into a resolvable URI — an ordinary https address a phone opens with no dedicated app:

https://resolver.yourbrand.com/01/08051234500012

The /01/ segment isn't arbitrary: it's the GS1 Application Identifier that says "what follows is a GTIN". Same grammar as the barcode, written as a URL.

Anatomy of a GS1 Digital Link URI#

The power of the standard is that one URI can carry several identifiers, each introduced by its Application Identifier:

Lined up, they describe a specific garment in full:

https://resolver.yourbrand.com/01/08051234500012/21/DRE-001

One QR, an identity readable by both machine and human.

Why a plain link isn't enough#

You could point the QR at any old page. It works — until it changes. GS1 Digital Link avoids that debt:

• it's interoperable: anyone who knows the standard can parse the URI without a private agreement;
• it separates identity from resolution: the GTIN stays the same even if you change domain, hosting or vendor;
• it's persistent: the product's identity doesn't hinge on a URL you might have to move in two years;
• it's compatible with EU infrastructure — the DPP Central Registry thinks precisely in terms of resolvable identifiers.

What's on the other end#

When the resolver receives the URI, from the same identity it can return two different things depending on who's asking:

1. a human-readable passport page, for the consumer scanning in-store;
2. a machine-readable JSON-LD, for systems, marketplaces and authorities.

That's content negotiation: same QR, two audiences. This dual nature — human and machine-readable — is what makes the passport useful beyond compliance: it feeds marketplaces, resale apps and consumer scoring tools with real data, not inferred.

In practice with Trama#

You don't need to memorize the standard. Given a GTIN (or an internal identifier if you don't have GTINs yet), Trama generates the GS1 Digital Link QR print-ready in SVG and PNG, hosts the resolver and serves the branded passport page. You focus on the product; we bring the standard.

The real first step isn't the QR — it's the structured data behind it: see how to prepare your collection data.