Hi,
My homepage is currently rated F by Google PageSpeed, which is a bit concern to me. The number one recommendation seems to be to serve scaled images. Researching this, I found people saying to upload images that are no more than the maximum width I'd like them to be displayable at. As we are to some extent a photography site, it's important that our images should look as sharp and detailed as possible on the widest possible spectrum of screens. A Retina 5K display has 5,120 pixels across the width, and I'm displaying many images full width. How can I therefore meet Google's requirement? Is there a method, tool or plugin you can recommend?
Many thanks!