Help:Colon trick

This help page is a how-to guide. It details processes or procedures of some aspect(s) of Wikipedia's norms and practices. It is not one of Wikipedia's policies or guidelines, and may reflect varying levels of consensus and vetting.

Shortcuts WP:COLON WP:COLONTRICK H::

The colon trick is a method of providing a link to a

By adding a

• [[Category:Help]] would list this page in Category:Help, but [[:Category:Help]] will produce a link to Category:Help.
• [[File:Wikipedia-logo.png]] would display an image, but [[:File:Wikipedia-logo.png]] will produce a link to File:Wikipedia-logo.png.
• [[pt:Internet]] will create an
  interlanguage link, but [[:pt:Internet]] will produce an interwiki link to pt:Internet
  (in the Portuguese Wikipedia).
• [[//Hus]] will produce an (invalid) external link wrapped in brackets ("[[1]]"), but [[://Hus]] will produce a link to
  //Hus
  .
• [[Computer]] links to the Computer article; adding a colon like [[:Computer]] can be done, but the colon is unneeded and makes no difference.

A colon can also be used to transclude a page in mainspace, rather than template space. For example, {{The Beatles}} will transclude Template:The Beatles, but {{:The Beatles}} will transclude the mainspace article The Beatles. This is useful when the mainspace article has been specially formatted to be transcluded in other articles, by using <noinclude> or <includeonly> tags to indicate the portion that should be included when the article is transcluded.

Normally, linking to a user page in an edit summary sends a notification to the user. A colon can be used to escape this behaviour. For example, the edit summary "corrected typo by [[User:Example]]" will ping User:Example, but "corrected typo by [[:User:Example]]" will not.