You can resize an object by dragging its handles or typing exact dimensions.
Here are ways to resize objects:
To resize an object by dragging, select the object and then drag one of its
selection handles. To resize an object in one direction, drag a side handle instead of
a corner handle.
To resize the object from its center, press the Option key as you drag.
To maintain an object’s proportions, hold down the Shift key as you drag. You can
also click Inspector in the toolbar, click the Metrics inspector button, and then select
“Constrain proportions” before dragging.
To show the size of an object when you drag a selection handle, choose Numbers
> Preferences, and then select “Show size and position when moving objects” in the
To resize an object using exact proportions, select the object, click Inspector in the
toolbar, click the Metrics inspector button, and then use the Width and Height controls.
To resize several objects at once, select the objects, click Inspector in the toolbar, click
the Metrics inspector button, and then type new values in the Width and Height fields.
Select the object, and then click Original Size in the Metrics inspector.
If you resized a very large image file but need to use only the smaller version in
your spreadsheet, you can have Numbers keep only a smaller copy of the image,
thus reducing the overall size of your document. See “Reducing Image File Sizes” on