Normalize audio - Switch Sound Format Converter Plus

[GeorgeK]

I just normalized a lot of WAV files to WAV to get the same peak level on all files. But when I check the size of the original file compared to the normalized, the "normalization" have made the file much smaller than the original - almost 50% .. and that's not what I expected.. Is there a way to "turn off" anything but normalization / leveling, or do I need to find another (professional) batch normalizer software? My wav files are 48khz 24bit