Of all the possible websites to choose as an example, Wikipedia is a strange choice since, unlike most websites, one can download its database and query it offline. For example,

https://en.wikipedia.org/wiki/Wikipedia:Database_download

https://download.kiwix.org/zim/

Some other ways to search and read Wikipedia offline:

     XOWA: (S: XOWA)
     WikiTaxi: S: WikiTaxi (for Windows)
     aarddict: S: Aard Dictionary
     BzReader: S: BzReader and MzReader (for Windows)
     Selected Wikipedia articles as a printed document: Help:Printing
     Wiki as E-Book: S: E-book
     WikiFilter: S: WikiFilter
     Wikipedia on rockbox: S: Wikiviewer for Rockbox