Version of compression algorithm. Possible values are 1. Standard compression 2. fast improved compression which is faster then Standard but may be applicable not for all images 3. mixed Standard compression is applied to images which can not be compressed by faster algorithm this may give best compression but more slow then fast algorithm. Version Fast is not applicable for resizing images Standard method will be used. Default is Standard.... standard compression, 2. fast (improved...compression which is faster then standard but may be applicable not...