RDF

What RDF means

JSON-LD is one serialisation of it, so every schema.org block on a page is already a small RDF graph, and it can be checked as one - whether its identifiers resolve, whether references point at nodes that exist, whether it parses at all.

Where RDF comes up on this site

• llms.txt adoption rate: how many sites actually publish oneThe RDF reading added later counts every one of these as a triple, which is a useful way to see how little a page that only says we are an organisation actually states.
• E-E-A-T is not on the wire. Here is what a crawler can measure instead.Adding founder: {"@id": "/#author"} to the Organization node only helps if that @id is declared on the same page; otherwise it is a dangling reference , the exact defect the new RDF section counts against everyone else.
• JSON-LD @id and IRI errors: what breaks and how to fix itIt is an IRI, an internationalised URI, and the RDF graph a consumer builds from the page treats two nodes with the same @id as one node and two nodes with different @id s as two things.
• 33 AI visibility tools measured: a third publish llms.txt, none an entity mapSince this post was written the battery has grown by three sections, E-E-A-T proxies, an RDF reading of the schema, and accessibility structure, and the reports linked here regenerate under the current battery, so a vendor's number today may differ from…
• We reviewed all 150 scored rows against seven site types. Here is what we unscored, and why.A row in the new RDF section scored the same @id coverage as an existing row; it is shown, not scored.

Terms this definition uses

Subject · Predicate · Object · triple · JSON-LD

Definitions that name RDF

triple · Blank node · Literal · Predicate · Subject · Object · Named graph · Default graph · Graph merge · Canonical RDF

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) · triple · dangling @id · RDFa and Microdata · founder edge · foundingDate · knowsAbout · unreciprocated profile · entity graph · DefinedTerm · Person schema · named entity recognition · NAP consistency · name drift · geocoding · rival roots · speakable · FAQPage schema · OpeningHoursSpecification · service area

Questions about RDF

What is RDF?

The Resource Description Framework: facts expressed as subject, predicate, object statements (triples) with resolvable identifiers.

Which area of the glossary does RDF belong to?

Entities and schema: Declaring who you are in a form a resolver can use without guessing.

← microformats (h-card)  ·  triple →

See it in the full glossary · 731 terms across 19 areas.