MapServiceImageFormat

BMP.

To use service-defined default image format.

GIF.

JPEG. Supported in both Image Service and Map Service.

JPG | PNG. Supported in Image Service only. Note that support for the jpgpng format was added at 10.0. This format returns a JPG if there are no transparent pixels in the requested extent, otherwise it returns a PNG.

PNG. Supported in Map Service only.

24bit PNG. Supported in both Image Service and Map Service.

PNG32. Supported in Image Service and Map Service.

8-bit PNG. Supported in both Image Service and Map Service.

TIFF.

Unknown.