additionalType

Canonical URL: http://schema.org/additionalType

Thing > Property > rdf:type > additionalType

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.

Usage: Between 10,000 and 50,000 domains
Values expected to be one of these types
URL
Used on these types
Thing
Super-properties
rdf:type


Examples

Example 1
Without Markup Microdata RDFa JSON-LD 
<!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
 <div>
   <h3>Le concerto</h3>
   <table summary="Bibliographic Details">
     <tr>
       <th>Main Author: </th>
       <td>Ferchault, Guy</td>
     </tr>
   </table>
 </div>
 <table summary="Holdings details from Anytown City Library">
   <!-- Example of a copy available for loan -->
   <tr>
     <th>Copy </th>
     <td>Available
       <div>Barcode: <span>CONC91000937</span></div>
       <div>Call number: <span>780 R2</span></div>
       <div>Library: <span>Anytown City Library</span></div>
     </td>
   </tr>
 <table>

 <!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
 <div itemscope itemtype="http://schema.org/Book" itemid="#record">
   <link itemprop="additionalType" href="http://schema.org/Product"/>
   <h3 itemprop="name">Le concerto</h3>
   <table summary="Bibliographic Details">
     <tr>
       <th>Main Author: </th>
       <td itemprop="author">Ferchault, Guy</td>
     </tr>
   </table>
 </div>
 <table summary="Holdings details from Anytown City Library">
   <!-- Example of a copy available for loan -->
   <tr itemscope itemtype="http://schema.org/Offer">
     <th>Copy </th>
     <td>Available
       <link itemprop="availability" href="http://schema.org/InStock">
       <div>Barcode: <span itemprop="serialNumber">CONC91000937</span></div>
       <div>Call number: <span itemprop="sku">780 R2</span></div>
       <div>Library: <span itemprop="offeredBy" itemtype="http://schema.org/Library" itemid="http://library.anytown.gov.uk" >Anytown City Library</span></div>
       <link itemprop="businessFunction" href="http://purl.org/goodrelations/v1#LeaseOut">
       <link itemprop="itemOffered" href="#record">
     </td>
   </tr>
 <table>

 <!-- Uses both the "Book" and "Product" item types to support Offer relationships -->
 <div vocab="http://schema.org/" resource="#record" typeof="Book Product">
   <h3 property="name">Le concerto</h3>
   <table summary="Bibliographic Details">
     <tr>
       <th>Main Author: </th>
       <td property="author">Ferchault, Guy</td>
     </tr>
   </table>
 </div>
 <table vocab="http://schema.org/" summary="Holdings details from Anytown City Library">
   <!-- Example of a copy available for loan -->
   <tr typeof="Offer">
     <th>Copy </th>
     <td>Available
       <link property="availability" href="http://schema.org/InStock">
       <div>Barcode: <span property="serialNumber">CONC91000937</span></div>
       <div>Call number: <span property="sku">780 R2</span></div>
       <div>Library: <span property="offeredBy" typeof="Library" resource="http://library.anytown.gov.uk" >Anytown City Library</span></div>
       <link property="businessFunction" href="http://purl.org/goodrelations/v1#LeaseOut">
       <link property="itemOffered" href="#record">
     </td>
   </tr>
 <table>

<script type="application/ld+json">
{
  "@context":  "http://schema.org/",
  "@id": "#record",
  "@type": "Book",
  "additionalType": "Product",
  "name": "Le concerto",
  "author": "Ferchault, Guy",
  "offers":{
      "@type": "Offer",
      "availability": "http://schema.org/InStock",
      "serialNumber": "CONC91000937",
      "sku": "780 R2",
      "offeredBy": {
          "@type": "Library",
          "@id": "http://library.anytown.gov.uk",
          "name": "Anytown City Library"
      },
      "businessFunction": "http://purl.org/goodrelations/v1#LeaseOut",
      "itemOffered": "#record"
    }
}
</script>

Schema Version 3.2