.RRD File Extension
File TypeReduced Resolution Dataset File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is an RRD file?
GIS file created by geospatial processing programs such as ERDAS IMAGINE and ArcGIS Desktop; stores a reduced dataset from an original raster image using pyramid layers, which speed up the display of raster maps; often used for saving discrete zoom levels on a map.