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NEW : 2013 Apr 29 | Added new programs:

2013 Apr 29added WinRar 5.0 beta 1
2013 Apr 25here is the detailed camera raw compression Benchmark
2013 Apr 25added SMAC 1.13, SMAC 1.14, ZPAQ 6.23
2013 Jan 14added new poll
2013 Feb 20added BIM 0.02 - a new lossless image compressor
2013 Feb 20old 3DGame testset deleted, old D.N.A. testset deleted
2013 Feb 20program results are sorted by a sum expressing percentual distance from best result of each testset
2013 Feb 20every program that enters the chart above 7-Zip gets an additional sum modifier: (encoding time/5000)
2013 Feb 20audio (wav) testset added
2013 Feb 20camera raw testset added

Welcome to my lossless file compression benchmark.

We all do daily save data – no matter if photographs, music, programs, games, texts or backups of mobile devices. To save space and to prevent data losses, those data is stored in archives.

But which program is best in keeping my data smaller? My holiday photographs? And the songs of my MP3-Player? Which archiving tool is best for which data types? How does my current tool score? How about alternatives? And what about compression and decompression timings?

This site gives answers to all these questions.

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Back in 1985 the first archiving tool was born: „SQPC file squeezer“. Today hundreds of programs do exist, most of them advertising more safety, more speed and better compression than all other competitors and alternatives.

But can we trust commercials? We prefer to test. All archivers have to run over the the same test data and are rated by the size of the resulting archives. In the main test we have 9 testsets. The smaller the archives the higher the Archiver climbs up the charts. Also the time needed to backup („compress“) and restore („decompress“) is reported here. So this site is your guide before buying an Archiving tool.

At the same time archiver-selling companies see how they compete to others; we can give inpiring ideas, make improvement suggestions and can help to design the future of data compression. And who knows — perhaps one day those programs can reach the performance of the biological archive idol — the genetic instruction sequence (D.N.A.).

You see things; and you say, 'Why?' But I dream things that never were; and I say, "Why not?" (George Bernard Shaw,1921)