@Phil you're right, without any params the image looks fine. I was just removing the compress but not the format. With no any extra params then the image looks ok.
I understand the reasoning to set the compression as default but the compression applied at least to my image makes a big difference in terms on the image quality and it does not look good. It'd be great if the API would allow us to tweak this based on needs without having to manually strip them out from the url