This links to a node or nodes indicating the exact quantity of the products included in an Offer or ProductCollection.

The number of items in the Collection.

The subject matter of the content.

An abstract is a short description that summarizes a CreativeWork.

Indicates that the resource is compatible with the referenced accessibility API. Values should be drawn from the approved vocabulary.

Identifies input methods that are sufficient to fully control the described resource. Values should be drawn from the approved vocabulary.

Content features of the resource, such as accessible media, alternatives and supported enhancements for accessibility. Values should be drawn from the approved vocabulary.

A characteristic of the described resource that is physiologically dangerous to some users. Related to WCAG 2.0 guideline 2.3. Values should be drawn from the approved vocabulary.

A human-readable summary of specific accessibility features or deficiencies, consistent with the other accessibility metadata but expressing subtleties such as "short descriptions are present but long descriptions will be needed for non-visual users" or "short descriptions are present and no long descriptions are needed."

The human sensory perceptual system or cognitive faculty through which a person may process or perceive information. Values should be drawn from the approved vocabulary.

A list of single or combined accessModes that are sufficient to understand all the intellectual content of a resource. Values should be drawn from the approved vocabulary.

Specifies the Person that is legally accountable for the CreativeWork.

Indicates a page documenting how licenses can be purchased or otherwise acquired, for the current item.

The overall rating, based on a collection of reviews or ratings, of the item.

A secondary title of the CreativeWork.

Indicates a page or other link involved in archival of a CreativeWork. In the case of MediaReview, the items in a MediaReviewItem may often become inaccessible, but be archived by archival, journalistic, activist, or law enforcement organizations. In such cases, the referenced page may not directly publish the content.

The item being described is intended to assess the competency or learning outcome defined by the referenced term.

A media object that encodes this CreativeWork. This property is a synonym for encoding.

An intended audience, i.e. a group for whom something was created.

An embedded audio object.

The author of this content or rating. Please note that author is special in that HTML 5 provides a special mechanism for indicating authorship via the rel tag. That is equivalent to this and may be used interchangeably.

An award won by or for this item.

Awards won by or for this item.

Fictional person connected with a creative work.

A citation or reference to another creative work, such as another publication, web page, scholarly article, etc.

Comments, typically from users.

The number of comments this CreativeWork (e.g. Article, Question or Answer) has received. This is most applicable to works published in Web sites with commenting system; additional comments may exist elsewhere.

Conditions that affect the availability of, or method(s) of access to, an item. Typically used for real world items such as an ArchiveComponent held by an ArchiveOrganization. This property is not suitable for use as a general Web access control mechanism. It is expressed only in natural language.\n\nFor example "Available by appointment from the Reading Room" or "Accessible only from logged-in accounts ".

The location depicted or described in the content. For example, the location in a photograph or painting.

Official rating of a piece of content—for example, 'MPAA PG-13'.

The specific time described by a creative work, for works (e.g. articles, video objects etc.) that emphasise a particular moment within an Event.

A secondary contributor to the CreativeWork or Event.

The party holding the legal copyright to the CreativeWork.

Text of a notice appropriate for describing the copyright aspects of this Creative Work, ideally indicating the owner of the copyright for the Work.

The year during which the claimed copyright for the CreativeWork was first asserted.

Indicates a correction to a CreativeWork, either via a CorrectionComment, textually or in another document.

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 it is difficult to provide fully general guidance, and properties such as contentLocation and 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.

The status of a creative work in terms of its stage in a lifecycle. Example terms include Incomplete, Draft, Published, Obsolete. Some organizations define a set of terms for the stages of their publication lifecycle.

The creator/author of this CreativeWork. This is the same as the Author property for CreativeWork.

Text that can be used to credit person(s) and/or organization(s) associated with a published Creative Work.

The date on which the CreativeWork was created or the item was added to a DataFeed.

The date on which the CreativeWork was most recently modified or when the item's entry was modified within a DataFeed.

Date of first broadcast/publication.

A link to the page containing the comments of the CreativeWork.

An EIDR (Entertainment Identifier Registry) identifier representing a specific edit / edition for a work of film or television.
For example, the motion picture known as "Ghostbusters" whose titleEIDR is "10.5240/7EC7-228A-510A-053E-CBB8-J" has several edits, e.g. "10.5240/1F2A-E1C5-680A-14C6-E76B-I" and "10.5240/8A35-3BEE-6497-5D12-9E4F-3".
Since schema.org types like Movie and TVEpisode can be used for both works and their multiple expressions, it is possible to use titleEIDR alone (for a general description), or alongside editEIDR for a more edit-specific description.

Specifies the Person who edited the CreativeWork.

An alignment to an established educational framework.
This property should not be used where the nature of the alignment can be described using a simple property, for example to express that a resource teaches or assesses a competency.

The level in terms of progression through an educational or training context. Examples of educational levels include 'beginner', 'intermediate' or 'advanced', and formal sets of level indicators.

The purpose of a work in the context of education; for example, 'assignment', 'group work'.

A media object that encodes this CreativeWork. This property is a synonym for associatedMedia.

Media type typically expressed using a MIME format (see IANA site and MDN reference), e.g. application/zip for a SoftwareApplication binary, audio/mpeg for .mp3 etc.
In cases where a CreativeWork has several media type representations, encoding can be used to indicate each MediaObject alongside particular encodingFormat information.
Unregistered or niche encoding and file formats can be indicated instead via the most appropriate URL, e.g. defining Web page or a Wikipedia/Wikidata entry.

A media object that encodes this CreativeWork.

A creative work that this work is an example/instance/realization/derivation of.

Date the content expires and is no longer useful or available. For example a VideoObject or NewsArticle whose availability or relevance is time-limited, or a ClaimReview fact check whose publisher wants to indicate that it may no longer be relevant (or helpful to highlight) after some date.

Media type, typically MIME format (see IANA site) of the content, e.g. application/zip of a SoftwareApplication binary. In cases where a CreativeWork has several media type representations, 'encoding' can be used to indicate each MediaObject alongside particular fileFormat information. Unregistered or niche file formats can be indicated instead via the most appropriate URL, e.g. defining Web page or a Wikipedia entry.

A person or organization that supports (sponsors) something through some kind of financial contribution.

A Grant that directly or indirectly provide funding or sponsorship for this item. See also ownershipFundingInfo.

Genre of the creative work, broadcast channel or group.

Indicates an item or CreativeWork that is part of this item, or CreativeWork (in some sense).

Headline of the article.

The language of the content or performance or used in an action. Please use one of the language codes from the IETF BCP 47 standard. See also availableLanguage.

The number of interactions for the CreativeWork using the WebSite or SoftwareApplication. The most specific child type of InteractionCounter should be used.

The predominant mode of learning supported by the learning resource. Acceptable values are 'active', 'expositive', or 'mixed'.

Used to indicate a specific claim contained, implied, translated or refined from the content of a MediaObject or other CreativeWork. The interpreting party can be indicated using claimInterpreter.

A flag to signal that the item, event, or place is accessible for free.

A resource from which this work is derived or from which it is a modification or adaption.

A resource that was used in the creation of this resource. This term can be repeated for multiple sources. For example, http://example.com/great-multiplication-intro.html.

Indicates whether this content is family friendly.

Indicates an item or CreativeWork that this item, or CreativeWork (in some sense), is part of.

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 predominant type or kind characterizing the learning resource. For example, 'presentation', 'handout'.

A license document that applies to this content, typically indicated by URL.

The location where the CreativeWork was created, which may not be the same as the location depicted in the CreativeWork.

Indicates the primary entity described in some page or other CreativeWork.

A maintainer of a Dataset, software package (SoftwareApplication), or other Project. A maintainer is a Person or Organization that manages contributions to, and/or publication of, some (typically complex) artifact. It is common for distributions of software and data to be based on "upstream" sources. When maintainer is applied to a specific version of something e.g. a particular version or packaging of a Dataset, it is always possible that the upstream source has a different maintainer. The isBasedOn property can be used to indicate such relationships between datasets to make the different maintenance roles clear. Similarly in the case of software, a package may have dedicated maintainers working on integration into software distributions such as Ubuntu, as well as upstream maintainers of the underlying work.

A material that something is made from, e.g. leather, wool, cotton, paper.

The quantity of the materials being described or an expression of the physical space they occupy.

Indicates that the CreativeWork contains a reference to, but is not necessarily about a concept.

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 to indicate the kind of transaction offered, i.e. sell, lease, etc. This property can also be used to describe a 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 position of an item in a series or sequence of items.

The person or organization who produced the work (e.g. music album, movie, TV/radio series etc.).

The service provider, service operator, or service performer; the goods producer. Another party (a seller) may offer those services or goods on behalf of the provider. A provider may also serve as the seller.

A publication event associated with the item.

The publisher of the creative work.

The publishing division which published the comic.

The publishingPrinciples property indicates (typically via URL) a document describing the editorial principles of an Organization (or individual, e.g. a Person writing a blog) that relate to their activities as a publisher, e.g. ethics or diversity policies. When applied to a CreativeWork (e.g. NewsArticle) the principles are those of the party primarily responsible for the creation of the CreativeWork.
While such policies are most typically expressed in natural language, sometimes related information (e.g. indicating a funder) can be expressed using schema.org terminology.

The Event where the CreativeWork was recorded. The CreativeWork may capture all or part of the event.

The place and time the release was issued, expressed as a PublicationEvent.

A review of the item.

Review of the item.

Indicates (by URL or string) a particular version of a schema used in some CreativeWork. This property was created primarily to

indicate the use of a specific schema.org release, e.g. ```10.0``` as a simple string, or more explicitly via URL, ```https://schema.org/knowledge-graph/docs/releases#v10.0```. There may be situations in which other schemas might usefully be referenced this way, e.g. ```http://dublincore.org/specifications/dublin-core/dces/1999-07-02/``` but this has not been carefully explored in the community.

Indicates the date on which the current structured data was generated / published. Typically used alongside sdPublisher

A license document that applies to this structured data, typically indicated by URL.

Indicates the party responsible for generating and publishing the current structured data markup, typically in cases where the structured data is derived automatically from existing published content but published on a different site. For example, student projects and open data initiatives often re-publish existing content with more explicitly structured metadata. The sdPublisher property helps make such practices more explicit.

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; in other cases, the width, height, depth and weight properties may be more applicable.

The Organization on whose behalf the creator was working.

The "spatial" property can be used in cases when more specific properties (e.g. locationCreated, spatialCoverage, contentLocation) are not known to be appropriate.

The spatialCoverage of a CreativeWork indicates the place(s) which are the focus of the content. It is a subproperty of

contentLocation intended primarily for more technical and detailed materials. For example with a Dataset, it indicates
areas that the dataset describes: a dataset of New York weather would have spatialCoverage which was the place: the state of New York.

A person or organization that supports a thing through a pledge, promise, or financial contribution. E.g. a sponsor of a Medical Study or a corporate sponsor of an event.

The item being described is intended to help a person learn the competency or learning outcome defined by the referenced term.

The "temporal" property can be used in cases where more specific properties (e.g. temporalCoverage, dateCreated, dateModified, datePublished) are not known to be appropriate.

The temporalCoverage of a CreativeWork indicates the period that the content applies to, i.e. that it describes, either as a DateTime or as a textual string indicating a time period in ISO 8601 time interval format. In

the case of a Dataset it will typically indicate the relevant time period in a precise notation (e.g. for a 2011 census dataset, the year 2011 would be written "2011/2012"). Other forms of content, e.g. ScholarlyArticle, Book, TVSeries or TVEpisode, may indicate their temporalCoverage in broader terms - textually or via well-known URL.
Written works such as books may sometimes have precise temporal coverage too, e.g. a work set in 1939 - 1945 can be indicated in ISO 8601 interval format format via "1939/1945".

Open-ended date ranges can be written with ".." in place of the end date. For example, "2015-11/.." indicates a range beginning in November 2015 and with no specified final date. This is tentative and might be updated in future when ISO 8601 is officially updated.

The textual content of this CreativeWork.

A thumbnail image relevant to the Thing.

Approximate or typical time it takes to work with or through this learning resource for the typical intended target audience, e.g. 'PT30M', 'PT1H25M'.

The work that this work has been translated from. E.g. 物种起源 is a translationOf “On the Origin of Species”.

Organization or person who adapts a creative work to different languages, regional differences and technical requirements of a target market, or that translates during some event.

The typical expected age range, e.g. '7-9', '11-'.

The schema.org usageInfo property indicates further information about a CreativeWork. This property is applicable both to works that are freely available and to those that require payment or other transactions. It can reference additional information, e.g. community expectations on preferred linking and citation conventions, as well as purchasing details. For something that can be commercially licensed, usageInfo can provide detailed, resource-specific information about licensing options.
This property can be used alongside the license property which indicates license(s) applicable to some piece of content. The usageInfo property can provide information about other licensing options, e.g. acquiring commercial usage rights for an image that is also available under non-commercial creative commons licenses.

The version of the CreativeWork embodied by a specified resource.

An embedded video object.

Example/instance/realization/derivation of the concept of this creative work. E.g. the paperback edition, first edition, or e-book.

A work that is a translation of the content of this work. E.g. 西遊記 has an English workTranslation “Journey to the West”, a German workTranslation “Monkeys Pilgerfahrt” and a Vietnamese translation Tây du ký bình khảo.

A property-value pair representing an additional characteristic of the entity, e.g. a product feature or another characteristic for which there is no matching property in schema.org.\n\nNote: Publishers should be aware that applications designed to use specific schema.org properties (e.g. https://schema.org/width, https://schema.org/color, https://schema.org/gtin13, ...) will typically expect such data to be provided using those properties, rather than using the generic property/value mechanism.

The overall rating, based on a collection of reviews or ratings, of the item.

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'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.

An intended audience, i.e. a group for whom something was created.

An award won by or for this item.

Awards won by or for this item.

The brand(s) associated with a product or service, or the brand(s) maintained by an organization or business person.

A category for the item. Greater signs or slashes can be used to informally indicate a category hierarchy.

The color of the product.

The place where the product was assembled.

The place where the item (typically 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 it is difficult to provide fully general guidance, and properties such as contentLocation and 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.

The depth of the item.

A Grant that directly or indirectly provide funding or sponsorship for this item. See also ownershipFundingInfo.

A Global Trade Item Number (GTIN). GTINs identify trade items, including products and services, using numeric identification codes.
The GS1 digital link specifications express GTINs as URLs (URIs, IRIs, etc.). Details including regular expression examples can be found in, Section 6 of the GS1 URI Syntax specification; see also schema.org tracking issue for schema.org-specific discussion. A correct 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 and meet the other rules for valid GTINs. See also GS1's GTIN Summary and Wikipedia for more details. Left-padding of the gtin values is not required or encouraged. The gtin property generalizes the earlier gtin8, gtin12, gtin13, and gtin14 properties.
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.

The GTIN-12 code of the product, or the product to which the offer refers. The GTIN-12 is the 12-digit GS1 Identification Key composed of a U.P.C. Company Prefix, Item Reference, and Check Digit used to identify trade items. See GS1 GTIN Summary for more details.

The GTIN-13 code of the product, or the product to which the offer refers. This is equivalent to 13-digit ISBN codes and EAN UCC-13. Former 12-digit UPC codes can be converted into a GTIN-13 code by simply adding a preceding zero. See GS1 GTIN Summary for more details.

The GTIN-14 code of the product, or the product to which the offer refers. See GS1 GTIN Summary for more details.

The GTIN-8 code of the product, or the product to which the offer refers. This code is also known as EAN/UCC-8 or 8-digit EAN. See GS1 GTIN Summary for more 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 product measurement, for example the inseam of pants, the wheel size of a bicycle, or the gauge of a screw. 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.

The height of an a thing.

Indicates the productGroupID for a ProductGroup that this product isVariantOf.

A pointer to another product (or multiple products) for which this product is an accessory or spare part.

A pointer to another product (or multiple products) for which this product is a consumable.

Indicates whether this content is family friendly.

A pointer to another, somehow related product (or multiple products).

A pointer to another, functionally similar product (or multiple products).

Indicates the kind of product that this is a variant of. In the case of 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, 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, this property can apply to any Product included in the group.

A predefined value from OfferItemCondition specifying the condition of the product or service, or the products or services included in the offer. Also used for product return policies to specify the condition of products accepted for returns.

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.

An associated logo.

The manufacturer of the product.

A material that something is made from, e.g. leather, wool, cotton, paper.

The 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 and Offer, rather than Thing. The general trend in web technology is towards responsive design in which content can be flexibly adapted to a wide range of browsing environments. Pages and sites referenced with the long-established 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 markup to use mobileUrl for more mobile-oriented pages. The property is intended for the case when items (primarily Product and 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 Manufacturer Part Number (MPN) of the product, or the product to which the offer refers.

Provides negative considerations regarding something, most typically in pro/con lists for reviews (alongside positiveNotes). For symmetry
In the case of a Review, the property describes the itemReviewed from the perspective of the review; in the case of a Product, the product itself is being described. Since product descriptions tend to emphasise positive claims, it may be relatively unusual to find negativeNotes used in this way. Nevertheless for the sake of symmetry, negativeNotes can be used on 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 (nsn) of a 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 to indicate the kind of transaction offered, i.e. sell, lease, etc. This property can also be used to describe a 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.

Provides positive considerations regarding something, for example product highlights or (alongside negativeNotes) pro/con lists for reviews.
In the case of a Review, the property describes the itemReviewed from the perspective of the review; in the case of a 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).

The product identifier, such as ISBN. For example: `` meta itemprop="productID" content="isbn:123-456-789" ``.

The date of production of the item, e.g. vehicle.

The date the item, e.g. vehicle, was purchased by the current owner.

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.

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; in other cases, the width, height, depth and 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 weight of a thing.

The width of the item.

An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.

An alias for the item.

A description of the item.

A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.

The identifier property represents any kind of identifier for any kind of Thing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.

An image of the item. This can be a URL or a fully described ImageObject.

Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.

The name of the item.

Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.

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.

A CreativeWork or Event about this Thing.

URL of the item.