I wasn't happy with some of the needlessly high bpp points in the pic comparison, so I tweaked things a bit. Car and Plant are the same, though. The images are also now directly linked to make things easier(?) too.
Code:
bpp
0.53 Bike: psJPG, libJPG, JP2000, WebP, HEVC
1.02 Cafe: psJPG, libJPG, JP2000, WebP, HEVC
0.36 Car: psJPG, libJPG, JP2000, WebP, HEVC
0.45 Office: psJPG, libJPG, JP2000, WebP, HEVC
0.38 Plant: psJPG, libJPG, JP2000, WebP, HEVC
0.41 Woman: psJPG, libJPG, JP2000, WebP, HEVC
Refs:
Bike,
Cafe,
Car,
Office,
Plant,
Woman