24004: MIXED tile format recommended to cache a map with raster layers

You are creating a cached map service for a map that contains only raster data types using a cache image format other than JPEG or MIXED. In most cases, a service based on a map containing a raster layer is usually meant to be used as a basemap, and does not need to support transparency. In these cases the image format should be JPEG or MIXED to save disk space without affecting map quality.

Solution

More information

Your choice of image format is important, because it determines the size on disk of the tiles, the image quality, and the ability to make the tile background transparent.

The default image format is PNG, but you may often need to change this based on the type of map you are creating. Below is a summary of the available image formats and their appropriate uses.

Learn more about map cache properties, planning a map cache, and creating a cached map service.

12/18/2014