title: Lazy Loading with Lazy Sizes
body: <p>I have asked my vendor to implement lazysizes for lady loading. I would like to know as a web admin what's the best practice of image dimension?</p>
  <p>For example, is 4 images of 500x500px better than 1 image of 500x2000px? My assumption is that if an image has a height larger than certain pixels, the lazy loading have no impact on saving the bandwidth. Am I correct? Or lazy loading will work while partially loading a long image?</p>
  <p><a href="https://www.npmjs.com/package/lazysizes" rel="nofollow noreferrer">https://www.npmjs.com/package/lazysizes</a></p>