 | This help page is a how-to guide. It explains concepts or processes used by the Wikipedia community. It is not one of Wikipedia's policies or guidelines, and may reflect varying levels of consensus. |
Wikipedia uses a powerful search engine, with a search box on every page. The search box will navigate directly to a given page name upon an exact match. But, you can force it to show you other pages that include your search string by including a tilde character ~ anywhere in the query. The maximum search string is 300 characters long.[a] However, search can instantly search all 61,894,425 pages on the wiki when the search is kept to a simple word or two.
Wikipedia's searches can be made domain-specific (i.e., search in desired namespaces). The search engine also supports special characters and parameters to extend the power of searches and allow users to make their search strings more specific.
Advanced features of the Wikipedia search engine include multi-word proximity-searches (in which the user indicates how close the words in a phrase might be), wildcard searches, "fuzzy" ~ searches (handles typo-correction and questionable spelling), and several wiki-oriented operators and parameters for weighting and filtering. Search can also handle regular expressions, a sophisticated exact-string and string-pattern search tool that is not offered by most public search engines.
Search can also filter results by template names used, category membership, or pages linking to a specific page.
Special:Preferences offers several search options, and Wikipedia:Tools § Searching offers the setups of other users.
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