Update! New Google Sites Background Options *Intro* Google Sites has been lacking some major features in the background department for many years. There are two background images that you can utilize: Background Image and Wrapper Image. Wrapper Image have a higher z value than Background Image, meaning it can be superimposed (be on top of) Background Image. That's where most of the fun was for using background images in Google Sites. You could have a header (wrapper image) sitting on top of a general pattern or photo (background image).