I've create a page banner image using the recommended size of 930x300. The image looks great on my computer, but once it is uploaded to site builder and added to the page it looks grainy and washed out. I've tried JPG with no compression, compression, enabled/disabled ICC Profile, different encoding types. I've also tried using a PNG file but they all look the same. Of course the default graphics on the site looks great. Is there a preferred picture format/setting to use?
Is there any answer to this? I am facing the same issue - and considering that my site is dealing with photography, it's not at all suitable to have a blurred/blown out header image.
Please let us know how to avoid the degredation of picture quality.