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The global attribute itemtype
specifies the URL of the vocabulary that will be used to define itemprop
's (item properties) in the data structure. itemscope
is used to set the scope of where in the data structure the vocabulary set by itemtype
will be active.
Google and other major search engines support the schema.org vocabulary for structured data. This vocabulary defines a standard set of type names and property names, for example, MusicEvent
indicates a concert performance, with startDate
and location
properties to specify the concert's key details. In this case, MusicEvent
would be the URL used by itemtype
and startDate
and location would be itemprop
's that MusicEvent
defines.
Note: More about itemtype
attributes can be found at https://schema.org/Thing
- The itemtype attribute must have a value that is an unordered set of unique tokens that are case-sensitive, each of which is a valid URL that is an absolute URL, and all of which are defined to use the same vocabulary. The attribute's value must have at least one token.
- The item types must all be types defined in applicable specifications (such as schema.org) and must all be defined to use the same vocabulary.
- The itemtype attribute can only be specified on elements that have an itemscope attribute specified.
- The itemid attribute can only be specified on elements that have both an itemscope attribute and an itemtype attribute specified, and can only be specified on elements with an itemscope attribute whose itemtype attribute specifies a vocabulary that does not support global identifiers for items, as defined by that vocabulary's specification.
- The exact meaning of a global identifier is determined by the vocabulary's specification. It is up to such specifications to define whether multiple items with the same global identifier (whether on the same page or different pages) are allowed to exist, and what the processing rules for that vocabulary are with respect to handling the case of multiple items with the same ID.
Simple example
HTML
<div itemscope itemtype="https://schema.org/Product"> <span itemprop="brand">ACME</span> <span itemprop="name">Executive Anvil</span> </div>
Structured data
itemscope | itemtype | schema.org Product | |
itemprop | name | Executive Anvil | |
itemprop | brand [Thing] | ||
itemprop | name | ACME |
Example
HTML
<div itemscope itemtype="https://schema.org/Product"> <span itemprop="brand">ACME<br></span> <span itemprop="name">Executive Anvil<br></span> <img itemprop="image" src="https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png" width="50" height="50" alt="Executive Anvil logo" /><br> <span itemprop="description">Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height. <br> </span> Product #: <span itemprop="mpn">925872<br></span> <span itemprop="aggregateRating" itemscope itemtype="https://schema.org/AggregateRating"> Rating: <span itemprop="ratingValue">4.4</span> stars, based on <span itemprop="reviewCount">89 </span> reviews<p> </span> <span itemprop="offers" itemscope itemtype="https://schema.org/Offer"> Regular price: $179.99<br> <meta itemprop="priceCurrency" content="USD" /> <span itemprop="price">Sale price: $119.99<br></span> (Sale ends <time itemprop="priceValidUntil" datetime="2020-11-05"> 5 November!</time>)<br> Available from: <span itemprop="seller" itemscope itemtype="https://schema.org/Organization"> <span itemprop="name">Executive Objects<br></span> </span> Condition: <link itemprop="itemCondition" href="https://schema.org/UsedCondition"/>Previously owned, in excellent condition<br> <link itemprop="availability" href="https://schema.org/InStock"/>In stock! Order now! </span> </span> </div>
Result
HTML
Structured data
itemscope | itemtype | Product (https://schema.org/Product) | |
itemprop | name | Executive Anvil | |
itemprop | image | https://pixabay.com/static/uploads/photo/2015/09/05/18/15/suitcase-924605_960_720.png | |
itemprop | description | Sleeker than ACME's Classic Anvil, the Executive Anvil is perfect for the business traveler looking for something to drop from a height. | |
itemprop | mpn | 925872 | |
itemprop | brand [Thing] | ||
itemprop | name | ACME | |
itemscope | itemprop[itemtype] | aggregateRating[AggregateRating] | |
itemprop | ratingValue | 4.4 | |
itemprop | reviewCount | 89 | |
itemprop | offers [Offer] | https://schema.org/Offer | |
itemprop | priceCurrency | USD | |
itemprop | price | 119.99 | |
itemprop | priceValidUntil | 2020-11-05 | |
itemprop | itemCondition | https://schema.org/UsedCondition | |
itemprop | availability | https://schema.org/InStock | |
itemscope | itemprop[itemtype] | seller [Organization] | https://schema.org/Organization |
itemprop | name | Executive Objects |
Note: A handy tool for extracting microdata structures from HTML is Google's Structured Data Testing Tool. Try it on the HTML shown above
Specifications
Specification | Status | Comment |
---|---|---|
itemtype |
WG Note - No longer being actively developed |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |