User:J heisenberg/Wikidata:Sitelinks to redirects

This page documents a Wikidata policy. It is a widely accepted standard that all editors should normally follow. All changes made to it (except for minor edits such as fixing typos) should reflect consensus. When in doubt, discuss your idea on the project chat.

Sitelinks to redirect pages on client wikis have been requested via a community vote^[1] and were made available in October 2022. The main goal of sitelinks to redirect pages is to improve interlanguage links across Wikimedia projects when concepts are described with different granularity in different projects.

Wikipedia articles often cover multiple topics on a single page that are represented by separate Wikidata items. For instance, en:Bonnie and Clyde on English Wikipedia covers the concepts described by the Wikidata items Bonnie and Clyde (Q219937), Bonnie Parker (Q2319886) and Clyde Barrow (Q3320282). Say, you want to create an interlanguage link from the page cs:Bonnie Parker on Czech Wikipedia to the page en:Bonnie and Clyde in the English Wikipedia. In the appropriate section (Wikipedia, Wikiquote etc.) on the item page (Bonnie Parker (Q2319886)), choose the appropriate language specifier (en), insert the address of the redirect page in the English Wikipedia ("Bonnie Parker") and finally change the badge (symbol to the right of the address field) to intentional sitelink to redirect. Using redirect pages on English Wikipedia as sitelinks on Bonnie Parker (Q2319886) and Clyde Barrow (Q3320282) allows users to find the article about the duo and even within the article the section that covers Bonnie Parker (Q2319886) and Clyde Barrow (Q3320282), respectively. In this way, closely related articles that are linked to distinct Wikidata items as well as articles that correspond to a subsection of an article in a different Wikipedia can be interlinked. See use cases below. Note that you have to be autoconfirmed or confirmed to set the badge.

Per Wikidata:Notability, section 1.1, sitelinks to a redirect page do not make an item notable. The item can of course still be made compliant with the notability policy under another criterion.

All sitelinks to redirects should carry a sitelink badge that indicates the redirect status of the target page on the client wiki. Available badges for redirects are:

• sitelink to redirect (Q70893996)
• intentional sitelink to redirect (Q70894304)

The purpose of these badges is to highlight sitelinks to redirects in the Wikidata web user interface, and to make them accessible via the Wikidata Query Service. Badge additions and removals are subject to the regular editorial process and do not appear automatically, although the software provides some guidance when editing sitelinks to redirect pages.

The basic sitelink badge sitelink to redirect (Q70893996) is applicable to all sitelinks to redirects, regardless of how the redirect came into use as a sitelink in Wikidata. There are several situations how this can happen unintentionally, e.g. due to a conversion of a regular content page into a redirect page on the client wiki while the page was already used in Wikidata. The community can run bots to manage additions and removals of sitelink badges where these are either missing or not applicable.

When intentionally adding a new sitelink to a redirect page in a Wikidata item, the sitelink should usually be tagged with the badge intentional sitelink to redirect (Q70894304). In most cases for this badge, there is a "Bonnie and Clyde"-like situation of article pages in different projects and the intentional use of redirects should improve the connectivity between wikis. Attempts to links to redirects without adding a badge automatically fail.

A review of sitelinks with the sitelink to redirect (Q70893996) badge, but without the intentional sitelink to redirect (Q70894304) badge, can be helpful. This can identify wikidata items that should be merged to reflect merged wikipedia articles, or alternatively sitelinks that should be upgraded to the intentional sitelink to redirect (Q70894304) badge if the redirect sitelink is valid and should be kept permanently.

Since intentional sitelink to redirect (Q70894304) is considered a subclass of sitelink to redirect (Q70893996), a sitelink to a redirect should not carry both badges at the same time. If the redirect page is indeed used intentionally and the intentional sitelink to redirect (Q70894304) badge is properly set, the sitelink to redirect (Q70893996) should be removed from the sitelink.

Individual Wikimedia projects have their own rules about which redirects they consider to be worthy.

If available on the corresponding Wikimedia project, a template corresponding to Template:R with Wikidata item (Q116644654) should also be added to the redirect page, so that it is visible to users of the Wikimedia project that the redirect has structural utility. For example, the redirect page for Actress on English Wikipedia transcludes en:Template:R with Wikidata item.

The German Wikipedia article for list of streets and places in Berlin-Halensee (Q1852407) contains explicit information about many streets. One of them is Cicerostraße (Q30076706). It is desirable to be able to find the list article from Cicerostraße (Q30076706) where the street is best described.

human foot (Q25501089) is a subclass of foot (Q15807). foot (Q15807) has an article en:Foot on English Wikipedia in which human foot (Q25501089) is also discussed.

However, given that the article does for instance not discuss chickens' feet, it would be inappropriate to put a sitelink on chicken feet (Q41384) to a redirect that leads to foot (Q15807).

When articles on Wikipedia projects get too long, their "History" section is sometimes split into a separate article. For example, en:History of the Byzantine Empire was split off from en:Byzantine Empire on English Wikipedia, but the history sections of de:Byzantinisches Reich are within that article on German Wikipedia. Adding a redirect to history of the Byzantine Empire (Q2993777) to the section on the German Wikipedia that deals with the history of Byzantine Empire (Q12544) allows the English article on the history to have a sitelink to the German Wikipedia.

In many Wikipedias, the country Malta (Q233) and the island Malta (Q193896) have different articles. It is useful to add redirects from Malta (Q193896): island of Malta to Malta (Q233): sovereign state in Southern Europe situated on an archipelago in the Mediterranean Sea for those Wikipedias that do not have a separate item for the island and that discuss the island in their article about the country.

Schmidt (Q15240355): family name is a name coming from the German word for the profession blacksmith (Q1639825). Given that multiple concepts share the name, the German and a few other Wikipedias have a separate page for Schmidt (Q18868): Wikimedia disambiguation page. The French Wikipedia has no page for the surname item but lists the people with the surname as part of their disambiguation page on fr:Schmidt. Linking Schmidt (Q15240355): family name with a redirect to fr:Schmidt allows readers to easily find the page via sitelinks from one of the pages linked to Schmidt (Q15240355): family name.

See also: family name has to use a different item than disambiguation page (Q27924673)

Wikidata items about disambiguation pages are for pages that share a disambiguation for the same string regardless of the meaning of the string. At the same time, it is sometimes desirable to have sitelinks between disambiguation pages for the same concept that is named differently in different languages. Whether or not those links are desired however depends on the policy of individual Wikipedias.

For instance, Árbol (Q12403097) and Tree (Q3538304) are similar disambiguation pages as they both disambiguate entities that are named after the concept tree. If it would be desired by the English Wikipedia that people could go with sitelinks from es:Árbol (desambiguación) to en:Tree (disambiguation), this sitelink could be created by adding a sitelink on Árbol (Q12403097) that points to the disambiguation page on the English Wikipedia. However, currently such redirects are not welcomed by the redirect policy of English Wikipedia.

Redirects from misspellings or valid alternative spellings of the name of a concept are usually not suitable as sitelinks and thus should not be linked from Wikidata.

Given that sitelinks with the sitelink to redirect (Q70893996)-badge can be mistakenly created by page moves on Wikipedia, we have worklists to clean them up.

1. ↑ Wikidata:Requests for comment/Allow the creation of links to redirects in Wikidata, held 2017-05-28 through 2018-11-06.