RDFa and Microdata
Two ways of embedding structured data in HTML attributes rather than a script block. Read by some parsers, ignored by others, and a second place for the facts to disagree with the JSON-LD.
What RDFa and Microdata means
When a page declares no JSON-LD node at all, its schema.org Microdata and RDFa are read as the page's graph and every entity check runs on them (from score version 20).
What RDFa and Microdata does not show
Counted alongside JSON-LD and not scored there, because one serialisation kept accurate is worth more than three that drift.
Terms this definition uses
embedding · structured data · Place · JSON-LD · score version
Related terms in Entities and schema
Declaring who you are in a form a resolver can use without guessing.
invented value · signed business record · listing audit · listing supplier · fix receipt · structured data · JSON-LD · stable @id · entity collision · reciprocated sameAs · sameAs · knowledge graph · entity resolution · entity disambiguation · Wikidata · NAP · local citation · Organization schema · LocalBusiness · FAQPage · structured data validation · @context · agentic knowledge graph · microformats (h-card) · RDF · triple · dangling @id · founder edge · foundingDate · knowsAbout · unreciprocated profile · entity graph · DefinedTerm · Person schema · named entity recognition · NAP consistency · NAP schema · name drift · geocoding · rival roots · speakable · FAQPage schema · OpeningHoursSpecification · service area
Questions about RDFa and Microdata
What is RDFa and Microdata?
Two ways of embedding structured data in HTML attributes rather than a script block. Read by some parsers, ignored by others, and a second place for the facts to disagree with the JSON-LD.
What does RDFa and Microdata not show or guarantee?
Two ways of embedding structured data in HTML attributes rather than a script block. Read by some parsers, ignored by others, and a second place for the facts to disagree with the JSON-LD. Counted alongside JSON-LD and not scored there, because one serialisation kept accurate is worth more than three that drift.
Which area of the glossary does RDFa and Microdata belong to?
Entities and schema: Declaring who you are in a form a resolver can use without guessing.
← dangling @id · founder edge →
See it in the full glossary · 772 terms across 19 areas.
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