An image file format. The georeferencing often accompanies the TIF file as a second file called the TIFF world file and carries an extension like .tfw. TIFF files can be very large, there is little compression. A common format for image data. GIF does not support georegistration.
Image resolution can be excellent and file sizes modest.
JPG A common format for image data. JPEG can support georegistration. Image resolution can be excellent and file sizes can be quite small. JPEG compresses images nicely but there can be some loss of resolution. SID A very efficient compression format for image data.