1. A method of adjusting a size of an object included in a printing target to be printed, by an apparatus including at least one processor, the method comprising: calculating at least one dimensional value of the object after the size of the object has been converted according to a reduction ratio, by the way of the at least one processor; and changing the at least one dimensional value to a predetermined value, when the calculated at least one dimensional value is equal to or less than a reference dimensional value regardless of the size of the print target which includes the object, by the way of the at least one processor.