LZW compression is the foremost technique for general purpose lossless data compression due to its simplicity and versatility. LZW compression should be used when you want to reduce the size of your images with good performance and low memory overhead. Typically you can expect LZW to compress data files to about one-half their original size. LZW compression works best for files containing lots of repetitive data. This lossless compression method is always used in GIF image files and sometimes in TIFF. ImageConverter Plus provides full support of LZW-compressed images so that you can further process them.