Below you can see the front view size comparison of Olympus E-PL6 and Fujifilm X-T30. Olympus E-PL6 is clearly the smaller of the two cameras. Its body is 7mm narrower, 19mm shorter and 9mm thinner than Fujifilm X-T30.
Olympus E-PL6 vs Fujifilm X-T30 - Front View
Olympus E-PL6 vs Fujifilm X-T30 - 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