Specifies the format of the map image.

If the image is overlaid atop other images, use the PNG image format (which can use a transparent background). If you have a low bandwidth network, use the JPEG image format. You can reduce the quality of the JPEG image and make its size smaller.

Png

• Summary:Specifies the image is in the W3C Portable Network NativeGraphics (PNG) image format.

Jpeg

• Summary:Specifies the image is in the Joint Photographic Experts Group (JPEG) image format.