Page metatags are currently going through a stage of evolvement, moving towards contextualizing interconnections between different pages and domains via Linked Data i.e data that links web pages and web-components such as images or videos to a bigger context not only across our own website but across the entire web.
Semantic Web initiatives such as Google’s & Microsoft’s Schema.org attempt to crawl and index Linked Data and map out these contextual connections across the web.
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JSON-LD introductory videos
JavaScript Object Notation for Linked Data aims to contextualize each page and domain to another. It entails in-page HTML markup such as @context, @id, @type, @language and more.
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While JSON-LD markup aims to contextualize webpages, RDFa, which is now used by Facebook’s Open Graph Protocol, aims to contextualize in-page components such as images and videos which were previously uncrawled by search engines.
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