How can you transform an object uniformly in Illustrator?

Transforming an object uniformly in Adobe Illustrator means altering its size while maintaining its original proportions. This is particularly important when you want to scale graphics without distorting their shape.

Holding the Shift key while scaling an object is the standard method for achieving uniform transformation. When you select an object and drag one of its corner handles while holding the Shift key, Illustrator constrains the proportions, so the object retains its aspect ratio. This is crucial for ensuring that the dimensions remain coherent and visually appealing, especially for graphics that require precise representation, such as logos or illustrations.

Using the Free Transform Tool can allow transformations, but it does not necessarily enforce uniform scaling unless the Shift key is also held down during the process. Similarly, dragging the corners of the bounding box does not guarantee uniform scaling since it could lead to disproportionate stretching if Shift is not pressed. Adjusting the object size in the Transform panel can provide specific measurements and control but doesn't inherently enforce uniformity unless aspect ratio constraints are applied during the adjustment. Hence, holding the Shift key is the most reliable method for ensuring that an object transforms uniformly in Illustrator.