Lossless compression can recover the exact original data after compression. It
is used mainly for compressing database records, spreadsheets or word
processing files, where exact replication of the original is essential.
??_Lossy compression will result in a certain loss of accuracy in exchange for a
substantial increase in compression. Lossy compression is more effective when
used to compress graphic images and digitised voice where losses outside visual
or aural perception can be tolerated.
