Add alternative text to a graphic
Alternative text can display for graphics, depending on the browser, when the graphic is downloading, when it can't be found, or when a site visitor moves the pointer over it.
1. In Page view, at the bottom of the document window, click Design.
2. Right-click the graphic, click Picture Properties on the shortcut menu, and then click the General tab.
3. Under Alternative representations, in the Text box, type the alternative text for the graphic.