ZST file extension
designates a pure
data compression format, not
providing file archival or encryption features.
The input data is compressed with Facebook's Zstandard algorithm, a new
flexible design that at lower compression settings provides faster than Deflate (Gzip
/ ZIP) performances and at highest compression settings provides
compression ratio comparable with 7-Zip's LZMA (.7Z).
A goal of Zstandard design is near-real time extraction, performing
very fast (faster than Gzip / ZIP) and with small variations in
decompressing ZST created with lowest or higher compression settings.
Zstandard
implementation, ZSTD, making use of multi-threading parallelism and on
recent multi-core CPUs currently outperforms single-threaded Brotli
implementation at similar levels of compression.
Due to the by-design limitation of being a single file
compressor, PeaZip uses Zstandard compression
cascaded with TAR
archiving in order to consolidate multiple input files / folders
into a
single container, which is then compressed originating a .tar.zst file.
Zstandard-compressed tar archives
are sometimes identified by .tzst
file extension instead or the composite tar.zst extension.
|
When is
Zstandard
compression format
recommended
Zstandard algorithm is very flexible and can provide a wide range of
compression levels with reasonable performances, but excels when fast
compression is desired, reaching Deflate-level compression ratio in
significantly shorter times.
Also, extraction is very fast and outperforms alternatives, making it
an excellent choice where extraction speed are important and where
decompression tasks are more common than compression ones.
|
 |
Read more about
.zst file type on ZSTD
official repository , and Zstandard entry on
Wikipedia.
PeaZip features creation and
extraction of Zstandard files on Windows and Linux systems using
Facebook's ZSTD implementation, and can read (open, test and
extract) and write (compress to) ZST file type.
|
|
|
|
|
|
.ZST
|
Authors
Yann Collet, Przemysław Skibiński (Facebook), 2015
limited to 1 single file as input
|
|
|
SPEED 
ZST format can reach very high compression and decompression speed.
Designed making use of parallelism of modern CPUs, ZSTD implementation
is significantly faster than Deflate while providing comparable
compression levels, and is still efficient at higher compression levels.
|
|
|
|
|
|
|
|
COMPRESSION
RATIO 
Zstandard flexible compression scheme allows to provide both very fast
compression and to reach LZMA-like compression ratios at higher
compression settings.
|
|
ADVANCED
OPTIONS 
ZST format is meant purely for providing fast data or single-file
compression, and lacks
archiving, encryption features by design.
|
|
|
|
|
|
|
|
Synopsis: Zst file
extension. Facebook's Zstandard single file compression format
specification and features in terms of compression speed and
compression ratio. What is .zst file type.
Topics: ZST file
extension specs, Zstandard compression format
PeaZip > FAQ >
ZST extension (Zstandard compressed files)
|
