Low Source:
If your image is larger than 30k it may take more than a few seconds to load.
Some people use low source images that come up first while the user is waiting.
1. Use an image editing application to create a smaller lower source version
of your image (black and white/grayscale image will be smaller)


2. Select the larger image that you created the lower source version of.
3. In the Properties Inspector's Low Source text box,
enter in the location of the lower source image.

4. Press enter (return).