Go to Site view or Page view.
From the Edit menu, choose Replace.
The Find and Replace dialog appears.
In the Find in field, select a scope for the search.
The options vary depending on the current view and the selected object.
Entire site to search all text in the site.
Selected pages to search text on the pages selected in Site view.
Current page to search text on the page currently displayed in Page view.
In the Find what field, type the word, letters, or phrase you want to replace.
In the Replace with field, type the replacement text.
Select options to narrow the search.
Click Find Next.
Click Replace to replace the found text, or click Replace All to replace all instances of the text on the page with the replacement text.