Compression algorithms are improving. There are compression programs out there that will beat pretty much anything famous like xz, but 99% of the time at the ex

Compression algorithms are improving. There are compression programs out there that will beat pretty much anything famous like xz, but 99% of the time at the expense of either compression/decompression time or memory. PAQ8PX is a classic example of this - amazing compression ratios, but ridiculously slow. http://www.maximumcompression.com/data/summary_mf.php http://www.maximumcompression.com/data/summary_mf.php http://www.maximumcompression.com/data/summary_mf3.php http://www.maximumcompression.com/data/summary_mf3.php There are programs that can shrink JPG losslessly by 24%: http://www.maximumcompression.com/data/jpg.php http://www.maximumcompression.com/data/jpg.php NanoZip keeps a very good balance of speed and compression ratio, but it's so unpopular, it's not very practical.