Gidan yanar gizo na duniya ( WWW ),ya kasan ce shi ne wanda akafi sani da yanar gizo, kuma tsari ne na bayanai inda ake gano takardu da sauran kayan yanar gizo ta Uniform Resource Locators (URLs, kamar su https://example.com/ ), wanda zai iya haɗawa da hyperlinks, kuma ana samun damar ta Intanet.Ana tura albarkatun Gidan yanar gizon ta hanyar Hanyar Canza Hanyar Hypertext (HTTP), mai yuwuwar samun damar ta hanyar aikace-aikacen software da ake kira burauzar yanar gizo, kuma ana wallafa su ta hanyar wata manhaja da ake kira sabar yanar gizo . Gidan yanar gizo ba daidai yake da Intanet ba, wanda ya riga ya tsara gidan yanar gizon ta wata hanyar ta sama da shekaru 20 kuma akan fasahar da aka gina Gidan yanar gizon. Wani Masanin kimiyyar Ingilishi Tim Berners-Lee ne ya kirkiro Yanar Gizon Duniya a shekarar 1989. Ya rubuta gidan yanar gizo na farko a cikin 1990 yayin aiki a CERN kusa da Geneva, Switzerland. An saki mai binciken ne a wajen CERN zuwa wasu cibiyoyin bincike wanda ya fara a watan Janairun 1991, sannan ga sauran jama'a a watan Agusta 1991.