Editing Internationalized Resource Identifier (section)

{{Short description|Expanded set of characters on the URI protocol}}
{{Infobox technology standard
| title = Internationalized Resource Identifier
| long_name = Internationalized Resource Identifier
| status = Proposed Standard
| year_started = {{Start date|2002|04|22|df=y}}
| first_published = {{Start date|2002|04|22|df=y}}
| version_date = {{Start date|2020|01|21|df=y}}
| authors = {{plainlist|
* Martin Dürst
* Michel Suignard
}}
| organization = [[Internet Engineering Task Force|{{abbr|IETF|Internet Engineering Task Force}}]]
| domain = [[Character encoding]]
| website = {{IETF RFC|3987}}
| abbreviation = IRI
| base_standards = {{plainlist|
* [[Internationalized domain name|{{abbr|IDNA|Internationalized Domain Names in Applications}}]]
* [[UTF-8]]
* [[Unicode_equivalence#Normalization|Unicode Normalization]] (UAX #15)
}}
}}

The '''Internationalized Resource Identifier''' ('''IRI''') is an [[Internet Standard|internet protocol standard]] which builds on the [[Uniform Resource Identifier]] (URI) protocol by greatly expanding the set of permitted characters.<ref name="gangemi">{{cite journal|last1=Gangemi|first1=Aldo|last2=Presutti|first2=Valentina|date=2006|title=The bourne identity of a web resource|url=http://ra.ethz.ch/CDstore/www2006/www.ibiblio.org/hhalpin/irw2006/vpresutti.pdf|journal=Proceedings of Identity Reference and the Web Workshop (IRW)|series=Laboratory for Applied Ontology|page=3|quote=Notice that IRIs (Internationalized Resource Identifier) [11] are supposed to replace URIs in next future.}}</ref><ref>{{Cite journal|url=https://tools.ietf.org/html/rfc3987#section-1.3|title=Internationalized Resource Identifiers (IRIs)|last=Suignard|first=Michel|website=tools.ietf.org|date=January 2005 |language=en|access-date=2018-06-09|quote=This document defines a new protocol element, the Internationalized  Resource Identifier (IRI), as a complement to the Uniform Resource Identifier (URI).  An IRI is a sequence of characters from the Universal Character Set (Unicode/ISO 10646).  A mapping from IRIs to URIs is defined, which means that IRIs can be used instead of URIs, where appropriate, to identify resources. The approach of defining a new protocol element was chosen instead of extending or changing the definition of URIs.}}</ref><ref>{{Cite journal|url=https://tools.ietf.org/html/rfc3987#page-3|title=Internationalized Resource Identifiers (IRIs)|last=Suignard|first=Michel|website=tools.ietf.org|date=January 2005 |language=en|access-date=2018-06-09|quote=This document defines a new protocol element called Internationalized Resource Identifier (IRI) by extending the syntax of URIs to a much wider repertoire of characters.  It also defines "internationalized" versions corresponding to other constructs from [RFC3986], such as URI references.  The syntax of IRIs is defined in section 2, and the relationship between IRIs and URIs in section 3.}}</ref> It was defined by the [[Internet Engineering Task Force]] (IETF) in 2005 in RFC 3987. While URIs are limited to a subset of the [[US-ASCII]] character set (characters outside that set must be mapped to octets according to some unspecified character encoding, then [[percent-encoding|percent-encoded]]), IRIs may additionally contain most characters from the [[Universal Character Set]] (Unicode/[[ISO 10646]]),<ref>{{Cite journal|url=http://tools.ietf.org/html/rfc3987|title=Internationalized Resource Identifiers (IRIs)|last=Suignard|first=Michel|website=tools.ietf.org|date=January 2005 |language=en|access-date=2018-06-09}}</ref><ref>{{Cite journal|url=https://tools.ietf.org/html/rfc3987#section-1.3|title=Internationalized Resource Identifiers (IRIs)|last=Suignard|first=Michel|website=tools.ietf.org|date=January 2005 |language=en|access-date=2018-06-09}}</ref> including [[Chinese characters| Chinese]], [[Japanese writing system|Japanese]], [[Korean alphabet|Korean]], and [[Cyrillic script|Cyrillic]] characters.