Turtle
text/turtle
RDF for people who have seen RDF/XML and would rather not: Turtle writes semantic-web triples as terse subject-predicate-object statements with prefixes and semicolons, the same pattern syntax SPARQL queries use, so reading one teaches you the other. It became a W3C Recommendation in February 2014 as part of the RDF 1.1 suite and is now the format linked-data vocabularies and ontologies are actually published and diffed in — the XML serialization survives mostly as machine output. It is UTF-8 text with no signature; the only tell is the cloud of @prefix declarations at the top of most files.
.ttl for Turtle; the stricter line-based subset N-Triples uses .nt and its own type.
Defined by RDF 1.1 Turtle (W3C Recommendation) · IANA registration. Registry facts from the IANA media-types registry via mime-db.