IETF language tags are defined by BCP 47, which is currently RFC 4646 and RFC 4647. These language tags are used in a number of modern standards, such as HTTP, HTML, XML and PNG. Each language tag is composed of one or more “subtags” separated by hyphens.

PropertyValue
dbpprop:abstract
  • IETF language tags are defined by BCP 47, which is currently RFC 4646 and RFC 4647. These language tags are used in a number of modern standards, such as HTTP, HTML, XML and PNG. Each language tag is composed of one or more “subtags” separated by hyphens. With the exception of private use language tags and grandfathered language tags, the subtags occur in the following order: a language subtag (potentially followed by up to three extended language subtags) an optional script subtag an optional region subtag optional variant subtags optional extension subtags optional private use subtags Language subtags are mainly derived from ISO 639-1 and ISO 639-2, script subtags from ISO 15924, and region subtags from ISO 3166-1 alpha-2 and UN M.49. Variant subtags are not derived from any standard. No extension subtags have yet been defined. The Language Subtag Registry, maintained by IANA, lists the current valid public subtags. The most commonly seen language tags consist of just a language subtag, or a language subtag and a region subtag. For example, en represents English, and consists of a single language subtag (from ISO 639-1), while en-CA represents Canadian English, and consists of the language subtag en followed by the region subtag CA (from ISO 3166-1). Subtags are not case sensitive, but the specification recommends using the same case as in the Language Subtag Registry, where region subtags are uppercase, script subtags are titlecase and all other subtags are lowercase. This capitalization follows the recommendations of the underlying ISO standards.
  • IETF言語タグ（英語: IETF language tag）は、BCP 47（現在は RFC 4646 と RFC 4647）により定義される技術仕様である。これは HTTP、HTML、XML、PNG、のような多くの技術標準において使われている。
dbpprop:hasPhotoCollection
dbpprop:reference
rdf:type
rdfs:comment
  • IETF language tags are defined by BCP 47, which is currently RFC 4646 and RFC 4647. These language tags are used in a number of modern standards, such as HTTP, HTML, XML and PNG. Each language tag is composed of one or more “subtags” separated by hyphens.
  • IETF言語タグ（英語: IETF language tag）は、BCP 47（現在は RFC 4646 と RFC 4647）により定義される技術仕様である。これは HTTP、HTML、XML、PNG、のような多くの技術標準において使われている。
rdfs:label
  • IETF language tag
  • IETF言語タグ
owl:sameAs
skos:subject
foaf:page
is dbpprop:redirect of
is owl:sameAs of