I'm using K-Chiing but the images seem a little bit odd, what's the catch?

K-Chiing  compresses the images in the server, and then sends them to your device. If the compression level is high, the loss of quality due to this compression may be noticed. It should not affect the experience of reading a digital newspaper, for instance, but if you find this a punctual problem in some webpage, you can always decrease your compression level.