Image Formats
You can set the image formats for both printer-friendly images and non-printer friendly images. In either case, you have 3 choices:
DEFAULT: This is usually the best setting. It lets the system determine what image type is best for your computer.
PNG: This delivers a PNG image. PNG's are typically smaller and take less download time.
JPG: This delivers a JPG image. JPG's are usually larger and take more download time. They are not recomended unless you are having problems with DEFAULT or PNG.