Microdata is a syntax for embedding structured data in HTML5, making use of vocabularies. If the question is about the popular vocabulary Schema.org, use the tag [schema.org].

(Not to be confused with )

Microdata is a syntax for embedding machine-readable data within HTML5 documents.

It defines the attributes itemscope, itemtype, itemprop, itemref, and itemid.

A popular vocabulary used in Microdata is , which is supported by the major search engines (they may use it for adding etc.).

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