Below you can see the front view size comparison of Fujifilm X-A3 and Fujifilm X-A2.
Fujifilm X-A3 vs Fujifilm X-A2 - Front View
Fujifilm X-A3 vs Fujifilm X-A2 - Top View
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.
Camera Size Comparison
Select Two Cameras for Size Comparison