CompressionRatings.Com is a large open file compression benchmark (compression comparison) using public programs and test files. It is a reference for both professionals and end-users looking for the latest information about the performance of lossless data compression software.
zcm 0.20b, 0.31, 0.50a, 0.50ai submitted. winrar 4.20a added.
zcm 0.11, yzx 0.11, mtcompressor 1.0, fbc 1.3b, lzturbo 1.0 submitted.
zcm 0.03, flashzip 0.99d1, rangecoder 1.9 submitted.
nanozip 0.09a, rangecoder 1.2 added.
Old program versions are no longer shown in the result pages by default. The test pages include a link below the "technical list" that enables the full listing that includes old versions.
lz4 1.0, 1.3, flashzip 0.99c2, 0.99c3, rangecoder 1.0 submitted.
Due to HDD failure and system reinstallations some of the fastest programs were tested again because of runtime differences. See the program pages for information when each program version was tested. Thanks to 'pseudo' for donating a new HDD.
stz 0.8.3, zhuff 0.7, csc 3.2f submitted. qpress 1.1 added and older versions re-tested with TAR-mode.
zhuff 0.5, lz4 0.9, csc 3.2b2, csc 3.2 submitted.
bsc 2.4.5, zhuff 0.4 submitted.
csc 3.2b2, stcompressor 0.6 submitted.
winrar 4.00b3 added.
bsc 2.3.0 submitted.
Improved filtering for the brief listings, they should show fewer entries now.
paf 03a submitted.
New programs for bzip2 benchmark.
bsc 2.2.5 submitted.
Added bzip2 benchmark.
bcm 0.11 submitted.
Fixed some errors in pf-listings.
bsc 2.2.0 submitted.
nanozip 0.08a added.
csc 3.2a5 submitted.
bsc 2.1.5 submitted.
yzx 0.04 (and 0.03 May 22) submitted.
freearc 0.666 submitted.
csc 3.2a3 submitted.
Change to the main benchmark: Application2 is moved to the extended section to avoid having too much weight for long matches.
csc 3.2a2 submitted.
Added a new file for the BWT comparison.
bsc 2.0.0, yzx 0.01, 0.02 (May 7) submitted.
csc 3.2a submitted.
bsc 1.0.3, etincelle rc1, rc2, qpress 0.39 submitted.
pigz 2.1.4, pbzip2 1.0.5, 4x4 added.