Below you can see the front view size comparison of Fujifilm X-T30 and Samsung NX mini. Samsung NX mini is clearly the smaller of the two cameras. Its body is 8mm narrower, 21mm shorter and 24mm thinner than Fujifilm X-T30.
Fujifilm X-T30 vs Samsung NX mini - Front View
Fujifilm X-T30 vs Samsung NX mini - 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