Image extension

The ArcGIS Server Image extension is a license added to ArcGIS for Server to serve collections of imagery managed using mosaic datasets, either as image services or contained within other services, such as map services. There is no separate installation for this extension, it is part of the ArcGIS Server installation process.

If you are serving an image service, the following are true:

The ArcGIS Image extension adds the abilities to


Map and globe documents can contain raster data, but if you are serving one that contains a mosaic dataset, the ArcGIS Image extension will be required.

Mosaic datasets

Mosaic datasets allow you to manage and serve large collections of raster and image data. Creating, editing, or working with mosaic datasets in ArcGIS for Desktop is not affected by the ArcGIS Image extension (there is no extension for ArcGIS for Desktop). You are required to have a Standard or Advanced license to create or edit mosaic datasets, which are created within a geodatabase. There is a Mosaic Dataset toolset within the Data Management toolbox that is used to create and edit mosaic datasets. Often, you will create and edit mosaic datasets within ArcMap where there are additional shortcut menu options to assist you. Users with Basic licenses will also be able to view mosaic datasets but cannot make any modifications.


Compiled image service definition files (.ISCDef), created using ArcGIS Image Server, are no longer published using ArcGIS for Server. You should convert the image service definition into a mosaic dataset (see Migrating an .ISDef to a mosaic dataset).