GeoTIFF
From Just Solve the File Format Problem
				
								
				
				
																
				
				
								
				GeoTIFF is an extension of TIFF for containing georeferenced images. GeoTIFF files can be read by normal TIFF utilities, though they may unintentionally strip out the geospatial data in the process.
References
- GeoTIFF 1.0 Official specification.
 - Main GeoTIFF website at OSGeo Has a good list of references.