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How can I create a GS1-compliant URL for a QR code from a GTIN-13?

Convert a GTIN-13 into a GS1-compliant QR code URL.

How can I create a GS1-compliant URL for a QR code from a GTIN-13?

To convert a GTIN-13 into a GS1-compliant URL for a QR code, you need to follow these steps:

Step 1: Convert the GTIN-13 to a GTIN-14

The GTIN-14 consists of 14 digits. The first digit is called the Packaging Indicator, which identifies the packaging level (e.g., single item = 0).

Conversion Process

  1. Add the Packaging Indicator to the front of the GTIN-13.
  2. Recalculate the check digit using the GS1 Modulo-10 rule for 14-digit GTINs.

Step 2: Create the GS1-compliant URL

GS1 uses Application Identifiers (AI) to define the type of data in a barcode.

  • For a GTIN, the Application Identifier is 01.

URL Structure

The GS1-compliant URL for a QR code follows this format: Tridy-URL/01/

Example

Given GTIN-13: 4031541759672

Conversion Steps:

  1. Add Packaging Indicator 0 → Base: 0403154175967
  2. Calculate the check digit using the GS1 Modulo-10 rule→ Check digit = 2
  3. Resulting GTIN-14: 04031541759672
  4. GS1-compliant URL: Tridy-URL/01/04031541759672

✅ Tip: Always ensure that the check digit is recalculated correctly for the 14-digit format, simply adding a zero to the front of a GTIN-13 is not enough to make it GS1-compliant.