Announcing C-Blosc 1.20.0
A blocking, shuffling and lossless compression library for C
What is new?
More safety checks have been implemented so that potential flaws
discovered by new fuzzers in OSS-Fuzzer are fixed (@nmoinvaz).
Also, the `_xgetbv()` collision has been fixed (@mgorny).
Also, a new version of blosclz (2.3.0) codec has been backported from
C-Blosc2. Expect better compression ratios for faster codecs.
Last but not least, the chunk format has been fully described so
that 3rd party software may come with a different implementation,
but still compatible with C-Blosc chunks. For details, see our new
For more info, please see the release notes in:
What is it?
optimized for binary data. It has been designed to transmit data to
the processor cache faster than the traditional, non-compressed,
direct memory fetch approach via a memcpy() OS call.
Blosc has internal support for different compressors like its internal
BloscLZ, but also LZ4, LZ4HC, Snappy, Zlib and Zstd. This way these can
automatically leverage the multithreading and pre-filtering
(shuffling) capabilities that comes with Blosc.
The github repository is over here:
Blosc is distributed using the BSD license, see LICENSES/BLOSC.txt for
There is an official Blosc mailing list at: