The goal here is a background image on a website that covers the entire browser window at all times. Let’s put some specifics on it:

  • Fills entire page with image, no white space
  • Scales image as needed
  • Retains image proportions (aspect ratio)
  • Image is centered on page
  • Does not cause scrollbars
  • As cross-browser compatible as possible
  • Isn’t some fancy shenanigans like Flash