Replace text The Extension:Replace_Text provides a special page (at Special:ReplaceText) to allow administrators to do a global string find-and-replace on all the content pages of a wiki. It's a global search and replace tool that covers all content in the database and multi-media files. It is obviously useful in many circumstances. It features regular expressions support and shows a list of candidate matches before actually doing anything making it safer to 'test' a search and replace operation.