Adding an outline to a bitmap
You can easily add an outline to a bitmap in any color with any thickness. To add the outline, you need to convert the bitmap into a rectangular shape with a bitmap fill, you can then change the outline of the rectangular shape as you would normally.
To add an outline to a bitmap
1. Select the bitmap (see Selecting objects).
2. From the Arrange menu, choose Convert to Editable Shapes. This converts your bitmap into a rectangle filled with the original bitmap.
3. Right-click on the outline color you want on the Color Line. See Changing an object's line color.
4. Choose a line thickness from the line thickness drop-down list on the control bars. For more information, see Changing line thicknesses.