JPEG covers were all I used a few months ago and now I only use PNG & TIFF files. They are so much more vivid and crisp. Even when I post them on social media I can tell the difference. I upload TIFF files on Amazon and I've not noticed a change in my royalty amount on my $2.99 and $5.99 stories. Anyone else giving up JPEG images? I know everyone says they are better for website load times but I've clocked the difference and it's only a millisecond longer to load. The big issue is image size.