# gtin - Schema.org Property

> Source: https://schema.org/gtin
> Extracted: 2026-02-16T18:45:39.736Z

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A Schema.org Property

*This term is in the "new" area - implementation feedback and adoption from applications and websites can help improve our definitions.*

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-   Canonical URL: https://schema.org/gtin
-   Equivalent Property: gs1:gtin  
    Equivalent Property: unece:gTINId
-   [Check for open issues.](https://github.com/schemaorg/schemaorg/issues?q=is%3Aissue+is%3Aopen+gtin)

A Global Trade Item Number ([GTIN](https://www.gs1.org/standards/id-keys/gtin)). GTINs identify trade items, including products and services, using numeric identification codes.

A correct [gtin](https://schema.org/gtin) value should be a valid GTIN, which means that it should be an all-numeric string of either 8, 12, 13 or 14 digits, or a "GS1 Digital Link" URL based on such a string. The numeric component should also have a [valid GS1 check digit](https://www.gs1.org/services/check-digit-calculator) and meet the other rules for valid GTINs. See also [GS1's GTIN Summary](http://www.gs1.org/barcodes/technical/idkeys/gtin) and [Wikipedia](https://en.wikipedia.org/wiki/Global_Trade_Item_Number) for more details. Left-padding of the gtin values is not required or encouraged. The [gtin](https://schema.org/gtin) property generalizes the earlier [gtin8](https://schema.org/gtin8), [gtin12](https://schema.org/gtin12), [gtin13](https://schema.org/gtin13), and [gtin14](https://schema.org/gtin14) properties.

The GS1 [digital link specifications](https://www.gs1.org/standards/Digital-Link/) expresses GTINs as URLs (URIs, IRIs, etc.). Digital Links should be populated into the [hasGS1DigitalLink](https://schema.org/hasGS1DigitalLink) attribute.

Note also that this is a definition for how to include GTINs in Schema.org data, and not a definition of GTINs in general - see the GS1 documentation for authoritative details.

### Values expected to be one of these types

`-   [Text](https://schema.org/Text "Text") -   [URL](https://schema.org/URL "URL")`

#### Sub-properties

-   [gtin12](https://schema.org/gtin12 "gtin12")
-   [gtin13](https://schema.org/gtin13 "gtin13")
-   [gtin14](https://schema.org/gtin14 "gtin14")
-   [gtin8](https://schema.org/gtin8 "gtin8")

#### Source

[https://github.com/schemaorg/schemaorg/issues/2288](https://github.com/schemaorg/schemaorg/issues/2288)