© 2026 Schemall· The source of structured meaning
schema.org
An Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Amazon organization (summary from [Wikipedia](https://en.wikipedia.org/wiki/Amazon_Standard_Identification_Number)'s article). Note also that this is a definition for how to include ASINs in Schema.org data, and not a definition of ASINs in general - see documentation from Amazon for authoritative details. ASINs are most commonly encoded as text strings, but the \[asin\] property supports URL/URI as potential values too.
A [callsign](https://en.wikipedia.org/wiki/Call_sign), as used in broadcasting and radio communications to identify people, radio and TV stations, or vehicles.
The place where the product was assembled.
The place where the item (typically [Product](https://schema.org/Product)) was last processed and tested before importation.
The country of origin of something, including products as well as creative works such as movie and TV content. In the case of TV and movie, this would be the country of the principle offices of the production company or individual responsible for the movie. For other kinds of [CreativeWork](https://schema.org/CreativeWork) it is difficult to provide fully general guidance, and properties such as [contentLocation](https://schema.org/contentLocation) and [locationCreated](https://schema.org/locationCreated) may be more applicable. In the case of products, the country of origin of the product. The exact interpretation of this may vary by context and product type, and cannot be fully enumerated here.
A [Grant](https://schema.org/Grant) that directly or indirectly provide funding or sponsorship for this item. See also [ownershipFundingInfo](https://schema.org/ownershipFundingInfo).
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.
Used to tag an item to be intended or suitable for consumption or use by adults only.
Defines the energy efficiency Category (also known as "class" or "rating") for a product according to an international energy efficiency standard.
A measurement of an item, For example, the inseam of pants, the wheel size of a bicycle, the gauge of a screw, or the carbon footprint measured for certification by an authority. Usually an exact measurement, but can also be a range of measurements for adjustable products, for example belts and ski bindings.
Specifies a MerchantReturnPolicy that may be applicable.
Indicates a ProductReturnPolicy that may be applicable.
Indicates the [productGroupID](https://schema.org/productGroupID) for a [ProductGroup](https://schema.org/ProductGroup) that this product [isVariantOf](https://schema.org/isVariantOf).
Indicates whether this content is family friendly.
Indicates the kind of product that this is a variant of. In the case of [ProductModel](https://schema.org/ProductModel), this is a pointer (from a ProductModel) to a base product from which this product is a variant. It is safe to infer that the variant inherits all product features from the base model, unless defined locally. This is not transitive. In the case of a [ProductGroup](https://schema.org/ProductGroup), the group description also serves as a template, representing a set of Products that vary on explicitly defined, specific dimensions only (so it defines both a set of variants, as well as which values distinguish amongst those variants). When used with [ProductGroup](https://schema.org/ProductGroup), this property can apply to any [Product](https://schema.org/Product) included in the group.
Keywords or tags used to describe some item. Multiple textual entries in a keywords list are typically delimited by commas, or by repeating the property.
The [mobileUrl](https://schema.org/mobileUrl) property is provided for specific situations in which data consumers need to determine whether one of several provided URLs is a dedicated 'mobile site'. To discourage over-use, and reflecting intial usecases, the property is expected only on [Product](https://schema.org/Product) and [Offer](https://schema.org/Offer), rather than [Thing](https://schema.org/Thing). The general trend in web technology is towards [responsive design](https://en.wikipedia.org/wiki/Responsive_web_design) in which content can be flexibly adapted to a wide range of browsing environments. Pages and sites referenced with the long-established [url](https://schema.org/url) property should ideally also be usable on a wide variety of devices, including mobile phones. In most cases, it would be pointless and counter productive to attempt to update all [url](https://schema.org/url) markup to use [mobileUrl](https://schema.org/mobileUrl) for more mobile-oriented pages. The property is intended for the case when items (primarily [Product](https://schema.org/Product) and [Offer](https://schema.org/Offer)) have extra URLs hosted on an additional "mobile site" alongside the main one. It should not be taken as an endorsement of this publication style.
The model of the product. Use with the URL of a ProductModel or a textual representation of the model identifier. The URL of the ProductModel can be from an external source. It is recommended to additionally provide strong product identifiers via the gtin8/gtin13/gtin14 and mpn properties.
The release date of a vehicle model (often used to differentiate versions of the same make and model).
The Manufacturer Part Number (MPN) of the product, or the product to which the offer refers.
The name of the item.
Provides negative considerations regarding something, most typically in pro/con lists for reviews (alongside [positiveNotes](https://schema.org/positiveNotes)). For symmetry In the case of a [Review](https://schema.org/Review), the property describes the [itemReviewed](https://schema.org/itemReviewed) from the perspective of the review; in the case of a [Product](https://schema.org/Product), the product itself is being described. Since product descriptions tend to emphasise positive claims, it may be relatively unusual to find [negativeNotes](https://schema.org/negativeNotes) used in this way. Nevertheless for the sake of symmetry, [negativeNotes](https://schema.org/negativeNotes) can be used on [Product](https://schema.org/Product). The property values can be expressed either as unstructured text (repeated as necessary), or if ordered, as a list (in which case the most negative is at the beginning of the list).
Indicates the [NATO stock number](https://en.wikipedia.org/wiki/NATO_Stock_Number) (nsn) of a [Product](https://schema.org/Product).
An offer to provide this item—for example, an offer to sell a product, rent the DVD of a movie, perform a service, or give away tickets to an event. Use [businessFunction](https://schema.org/businessFunction) to indicate the kind of transaction offered, i.e. sell, lease, etc. This property can also be used to describe a [Demand](https://schema.org/Demand). While this property is listed as expected on a number of common types, it can be used in others. In that case, using a second type, such as Product or a subtype of Product, can clarify the nature of the offer.
A pattern that something has, for example 'polka dot', 'striped', 'Canadian flag'. Values are typically expressed as text, although links to controlled value schemes are also supported.
The permitted weight of passengers and cargo, EXCLUDING the weight of the empty vehicle. Typical unit code(s): KGM for kilogram, LBR for pound - Note 1: Many databases specify the permitted TOTAL weight instead, which is the sum of [weight](https://schema.org/weight) and [payload](https://schema.org/payload) - Note 2: You can indicate additional information in the [name](https://schema.org/name) of the [QuantitativeValue](https://schema.org/QuantitativeValue) node. - Note 3: You may also link to a [QualitativeValue](https://schema.org/QualitativeValue) node that provides additional information using [valueReference](https://schema.org/valueReference). - Note 4: Note that you can use [minValue](https://schema.org/minValue) and [maxValue](https://schema.org/maxValue) to indicate ranges.
Provides positive considerations regarding something, for example product highlights or (alongside [negativeNotes](https://schema.org/negativeNotes)) pro/con lists for reviews. In the case of a [Review](https://schema.org/Review), the property describes the [itemReviewed](https://schema.org/itemReviewed) from the perspective of the review; in the case of a [Product](https://schema.org/Product), the product itself is being described. The property values can be expressed either as unstructured text (repeated as necessary), or if ordered, as a list (in which case the most positive is at the beginning of the list).
Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
The product identifier, such as ISBN. For example: `meta itemprop="productID" content="isbn:123-456-789"`.
The release date of a product or product model. This can be used to distinguish the exact variant of a product.
A review of the item.
Review of the item.
URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
The number of persons that can be seated (e.g. in a vehicle), both in terms of the physical space available, and in terms of limitations set by law.<br/><br/> Typical unit code(s): C62 for persons.
A standardized size of a product or creative work, specified either through a simple textual string (for example 'XL', '32Wx34L'), a QuantitativeValue with a unitCode, or a comprehensive and structured [SizeSpecification](https://schema.org/SizeSpecification); in other cases, the [width](https://schema.org/width), [height](https://schema.org/height), [depth](https://schema.org/depth) and [weight](https://schema.org/weight) properties may be more applicable.
The Stock Keeping Unit (SKU), i.e. a merchant-specific identifier for a product or service, or the product to which the offer refers.
A slogan or motto associated with the item.
The speed range of the vehicle. If the vehicle is powered by an engine, the upper limit of the speed range (indicated by [maxValue](https://schema.org/maxValue)) should be the maximum speed achievable under regular conditions. Typical unit code(s): KMH for km/h, HM for mile per hour (0.447 04 m/s), KNT for knot \*Note 1: Use [minValue](https://schema.org/minValue) and [maxValue](https://schema.org/maxValue) to indicate the range. Typically, the minimal value is zero. \* Note 2: There are many different ways of measuring the speed range. You can link to information about how the given value has been determined using the [valueReference](https://schema.org/valueReference) property.
This is a StupidProperty! - for testing only.
A CreativeWork or Event about this Thing.
The permitted vertical load (TWR) of a trailer attached to the vehicle. Also referred to as Tongue Load Rating (TLR) or Vertical Load Rating (VLR). Typical unit code(s): KGM for kilogram, LBR for pound - Note 1: You can indicate additional information in the [name](https://schema.org/name) of the [QuantitativeValue](https://schema.org/QuantitativeValue) node. - Note 2: You may also link to a [QualitativeValue](https://schema.org/QualitativeValue) node that provides additional information using [valueReference](https://schema.org/valueReference). - Note 3: Note that you can use [minValue](https://schema.org/minValue) and [maxValue](https://schema.org/maxValue) to indicate ranges.
The permitted weight of a trailer attached to the vehicle. Typical unit code(s): KGM for kilogram, LBR for pound \* Note 1: You can indicate additional information in the [name](https://schema.org/name) of the [QuantitativeValue](https://schema.org/QuantitativeValue) node. \* Note 2: You may also link to a [QualitativeValue](https://schema.org/QualitativeValue) node that provides additional information using [valueReference](https://schema.org/valueReference). \* Note 3: Note that you can use [minValue](https://schema.org/minValue) and [maxValue](https://schema.org/maxValue) to indicate ranges.
URL of the item.
The weight of the product or person.
The permitted total weight of the loaded vehicle, including passengers and cargo and the weight of the empty vehicle. Typical unit code(s): KGM for kilogram, LBR for pound - Note 1: You can indicate additional information in the [name](https://schema.org/name) of the [QuantitativeValue](https://schema.org/QuantitativeValue) node. - Note 2: You may also link to a [QualitativeValue](https://schema.org/QualitativeValue) node that provides additional information using [valueReference](https://schema.org/valueReference). - Note 3: Note that you can use [minValue](https://schema.org/minValue) and [maxValue](https://schema.org/maxValue) to indicate ranges.
The distance between the centers of the front and rear wheels.<br/><br/> Typical unit code(s): CMT for centimeters, MTR for meters, INH for inches, FOT for foot/feet.
The width of the item.
A color swatch image, visualizing the color of a [Product](https://schema.org/Product). Should match the textual description specified in the [color](https://schema.org/color) property. This can be a URL or a fully described ImageObject.
Certification information about a product, organization, service, place, or person.