This validator, one of several Yandex Webmaster tools, allows the user to check the semantic markup of a site to make sure that indexing robots can extract all the structured data. The validator lets the user check the most common microformats: microdata,, OpenGraph and RDF. However, not all formats support special snippets or the use of annotated data.

Keywords: Rich snippets, Microdata, RDFa,, Validation
Publisher: Yandex
Time required: P15M

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