How to Remove the Background from a Graphic Image in Office 2013
On the Background Removal tab, indicate what you want to keep and remove.
Keep your eye on what’s magenta and what’s not as you use these techniques, and consider zooming to 200 percent or more so that you can get a good look at your picture:
Changing the size of the box: Drag the side and corner handles of the box to capture what you want to keep or remove.
Marking what you want to keep: Click the Mark Areas to Keep button. The pointer changes into a pencil. Click your picture to indicate what you want to keep. Each time you click, a keep mark (a plus sign icon) appears on your picture.
Marking what you want to remove: Click the Mark Areas to Remove button. The pointer changes to a pencil. Click your picture to indicate what you want to remove. When you click, a remove mark (a minus sign) appears.
Deleting keep and remove marks: Click the Delete Mark button and then click a keep or remove mark to remove a mark and change what is and isn’t removed from the picture.
Of course, you can click the Undo button to backtrack as you work. If you get thoroughly lost on the Background Removal tab, click the Discard All Changes button and start all over.