Apple numbers User Manual

    Working with Shapes, Graphics, and Other Objects 

 

You can crop images without actually changing the image files by masking parts of 
them. 

You can use a rectangular mask to define the boundaries of an image. 

Import the image you want to mask (see “Importing an Image” on page 171 for 
instructions).

Select the image, and then choose Format > Mask. A resizable mask appears over the 
image, and some controls appear.

To resize the image, move the slider left or right.

Refine the mask.

Drag the selection handles to resize the mask. To constrain the mask’s proportions, hold 
down the Shift key as you drag the selection handles.

To rotate the mask, hold down the Command key as you drag a corner selection 
handle.

Place the mask over the part of the image you want to show. You can click at the edge 
of the selected mask and drag the mask. Or you can click in the image outside the 
mask and drag the image.

To make only the area under the mask visible, double-click the mask, press Return, click 
outside the image, or click Edit Mask. The borders of the masked image are dotted 
lines.

To resize or rotate the masked image, drag or Command-drag its selection handles.

To deselect the image and hide the mask controls, click outside the image.

To view the whole image, double-click it. To edit the mask, click Edit Mask.

Resize the mask by 
dragging its selection 
handles.

Drag the mask to center 
it over the part of the 
image you want to show.

Drag the slider to resize 
the image.

Click to show or hide the 
area outside the mask.