I am not sure what you mean, but I can look if you specify a site, page and image. I usually size images proportionally to 1366 pixels wide, so I can display them pretty large, but also size them down. That is for my personal site though so I am not as concerned with page load times. It is a balance that you really need to strike with your own eyes. You want the image to look good, but you don't want to have images that are too large and slow down the site too much.