The GS1 Digital Link standard: an overview
Most product packaging carries a barcode that does one thing: hold a number. The GS1 Digital Link standard changes that. It turns the identifier on a pack into a web address, so a single scan can reach checkout, consumer content, traceability records, and compliance data. With retailers preparing to accept 2D barcodes at the till by the end of 2027, brands are asking what the standard actually is and how it works. This overview answers that in plain terms.
What is the GS1 Digital Link standard?
The GS1 Digital Link standard is a way of writing a product's GS1 identifier, such as its GTIN, as a structured web address (URI). It lets one barcode hold the product ID and connect to web-based information. The same code works at retail point of sale and as a link to digital content, replacing the single-purpose 1D barcode.
The traditional barcode has done its job well. It is scanned more than 10 billion times a day and sits on over 1 billion products worldwide. Its limit is simple. It holds a Global Trade Item Number and nothing else. The GS1 Digital Link standard keeps that identifier but expresses it inside a web address, so the code can carry batch numbers, expiry dates, and serial numbers, and point to live information a brand controls. For a fuller introduction, see our guide on what GS1 Digital Link is.
How does the GS1 Digital Link URI work?
A GS1 Digital Link URI puts the product identifier into a web address using GS1 Application Identifiers. The GTIN sits after Application Identifier 01. As of version 1.4.0 of the standard, the GTIN is written as 14 digits. A code reader can extract the identifier straight from this structure, with no internet connection required.
A basic example looks like this: id.yourbrand.com/01/09312345678907. The path holds the Application Identifier (01) and the 14-digit GTIN. Qualifiers such as a batch or lot number and a serial number can be added in the same path, and attributes like expiry date can follow. The structure is the reason the standard works at checkout offline. A point-of-sale scanner reads the GTIN directly from the URI text and never has to open the web address. Our explainer on GS1 barcode formats sets out how this differs from older symbols.
What are link types and what do they do?
Link types are labels that tell a resolver which information to return for a scan. One GS1 Digital Link can hold many link types: a product page, instructions, certifications, a recall notice, or traceability data. The resolver reads the context of the scan and routes the person to the right destination, so one code serves many audiences from the same printed symbol.
This is where the standard earns its value beyond the till. A point-of-sale system only needs the GTIN. Everything past checkout runs through a resolver, the web layer that interprets link types and decides what to serve. A consumer scanning in one market can be sent a localised product page. A regulator can be routed to compliance records. A supply chain partner can reach batch data. Our piece on GS1 Digital Link link types breaks down the common types in detail.
Why does the standard matter for GS1 Sunrise 2027?
GS1 Sunrise 2027 is the industry move to have retail point-of-sale systems able to read 2D barcodes by 31 December 2027. The GS1 Digital Link standard is the syntax those 2D barcodes use to carry the GTIN. A QR code built on a properly structured GS1 Digital Link URI satisfies the point-of-sale requirement on its own.
A resolver is not needed for basic checkout compliance. The URI structure handles that. The resolver matters for everything else: consumer experiences, market-specific compliance content, traceability, and making products readable by AI shopping agents. That web layer is arriving rather than already settled, and it is where the standard starts to pay off.
The print step is the easy part. The data it connects to is the lasting advantage. For a market view, see our GS1 Sunrise 2027 page.
One brand that adopted GS1 2D barcodes early put the practical case plainly.
FAQ
Is the GS1 Digital Link standard the same as a QR code?
No. A QR code is a way of printing data so a camera can read it. The GS1 Digital Link standard is the rule for how the product identifier is written inside that code as a web address. A QR code can carry a GS1 Digital Link URI, which is the format retailers are preparing to accept at point of sale by the end of 2027.
Do I need a resolver to be ready for GS1 Sunrise 2027?
No. A QR code with a correctly structured GS1 Digital Link URI satisfies the point-of-sale requirement on its own, because checkout reads the GTIN straight from the URI text without an internet connection. A resolver is needed for everything past checkout, such as consumer content, market-specific compliance, and traceability.
What is a GTIN in a GS1 Digital Link URI?
The GTIN is the Global Trade Item Number, the unique product identifier. In a GS1 Digital Link URI it sits after Application Identifier 01 and, as of version 1.4.0 of the standard, is written as 14 digits. A reader extracts the GTIN directly from this structure for checkout.
What are link types used for?
Link types tell a resolver which information a scan should return. A single GS1 Digital Link can hold many of them, including a product page, instructions, certifications, a recall notice, or traceability data. The resolver routes each scan to the right destination based on context, so one printed code serves several audiences.
Does a GS1 Digital Link work at checkout without the internet?
Yes. The point-of-sale scanner reads the GTIN directly from the GS1 Digital Link URI structure and never opens the web address. Checkout works offline. The internet is only involved when a resolver serves web content, which happens after the till, not during it.
Can one GS1 Digital Link serve different content in different markets?
Yes. Through link types and a resolver, the same printed code can serve a localised product page in one market and compliance content in another. This matters for exporters that face different labelling rules across regions, where one code has to satisfy several regulatory requirements at once.
Do I need to redesign my packaging to adopt the standard?
No. Adopting the GS1 Digital Link standard means generating a 2D barcode that carries the GTIN in the correct URI structure and printing it on pack. A full packaging redesign is not required. Many brands run a 1D barcode and the 2D code together during the transition while retail systems update.
