Yeah, if you want to serve the most optimal image for Safari (iOS or desktop) JPEG 2000 is the way to go. The ideal format would be HEIF but there's not a lot

Yeah, if you want to serve the most optimal image for Safari (iOS or desktop) JPEG 2000 is the way to go. The ideal format would be HEIF but there's not a lot of conversion support out there, Imgix doesn't support it for instance.