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v1.1.4

cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski

cli : new : advanced benchmark command --priority=rt

cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77

cli : fix : --rm remains silent when input is stdin

cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski

speed : improved decompression speed in streaming mode for single shot scenarios (+5%)

memory : DDict (decompression dictionary) memory usage down from 150 KB to 20 KB

arch : 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell

API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize()

API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value)

build: new: meson build system in contrib/meson, by Dima Krasner

build: improved cmake script, by @Majlen

build: added -Wformat-security flag, as recommended by Padraig Brady

doc : new : educational decoder, by Sean Purcell

v1.1.3

cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`)

cli : new : experimental target `make zstdmt`, with multi-threading support

cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano.

cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski

cli : fix zstdless on Mac OS-X, by Andrew Janke

cli : fix #232 "compress non-files"

dictBuilder : improved dictionary generation quality, thanks to Nick Terrell

API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental)

API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul

API : new : ZDICT_finalizeDictionary()

API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511)

API : fix : all symbols properly exposed in libzstd, by Nick Terrell

build : support for Solaris target, by Przemyslaw Skibinski

doc : clarified specification, by Sean Purcell

v1.1.2

API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init

API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize()

API : zbuff : changed : prototypes now generate deprecation warnings

lib : improved : faster decompression speed at ultra compression settings and 32-bits mode

lib : changed : only public ZSTD_ symbols are now exposed

lib : changed : reduced usage of stack memory

lib : fixed : several corner case bugs, by Nick Terrell

cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski

cli : new : preserve file attributes

cli : new : added zstdless and zstdgrep tools

cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd)

cli : fixed : zstdcat

zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski

install : better compatibility with FreeBSD, by Dimitry Andric

source tree : changed : zbuff source files moved to lib/deprecated

v1.1.1

New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption

New : doc/zstd_manual.html, by Przemyslaw Skibinski

Improved : slightly better compression ratio at --ultra levels (>= 20)

Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report

Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section)

Added : example/multiple_streaming_compression.c

Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h)

Updated man page

Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets

v1.1.0

New : contrib/pzstd, parallel version of zstd, by Nick Terrell

added : NetBSD install target (#338)

Improved : speed for batches of small files

Improved : speed of zlib wrapper, by Przemyslaw Skibinski

Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier

Fixed : CLI -d output to stdout by default when input is stdin (#322)

Fixed : CLI correctly detects console on Mac OS-X

Fixed : CLI supports recursive mode `-r` on Mac OS-X

Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski

Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319)

Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365)

Fixed : zstd-pgo, reported by octoploid (#329)

v1.0.0

Change Licensing, all project is now BSD, Copyright Facebook

Small decompression speed improvement

API : Streaming API supports legacy format

API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParamter()

CLI supports legacy formats v0.4+

Fixed : compression fails on certain huge files, reported by Jesse McGrew

Enhanced documentation, by Przemyslaw Skibinski

v0.8.1

New streaming API

Changed : --ultra now enables levels beyond 19

Changed : -i# now selects benchmark time in second

Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell

Fixed : speed regression on specific patterns (#272)

Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291)

Fixed : ICC compilation, by Przemyslaw Skibinski

v0.8.0

Improved : better speed on clang and gcc -O2, thanks to Eric Biggers

New : Build on FreeBSD and DragonFly, thanks to JrMarino

Changed : modified API : ZSTD_compressEnd()

Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist

Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers

Fixed : large dictionaries (> 384 KB), reported by Ilona Papava

Fixed : checksum correctly checked in single-pass mode

Fixed : combined --test amd --rm, reported by Andreas M. Nilsson

Modified : minor compression level adaptations

Updated : compression format specification to v0.2.0

changed : zstd.h moved to /lib directory

v0.7.5

Transition version, supporting decoding of v0.8.x

v0.7.4

Added : homebrew for Mac, by Daniel Cade

Added : more examples

Fixed : segfault when using small dictionaries, reported by Felix Handte

Modified : default compression level for CLI is now 3

Updated : specification, to v0.1.1

v0.7.3

New : compression format specification

New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner.

New : `ZSTD_getDecompressedSize()`

New : OpenBSD target, by Juan Francisco Cantero Hurtado

New : `examples` directory

fixed : dictBuilder using HC levels, reported by Bartosz Taudul

fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte

fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski

modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section)

modified : legacy functions no longer need magic number

v0.7.2

fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski.

fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner.

fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner.

v0.7.1

fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier

fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв

fixed : corruption issue, reported by cj

modified : checksum enabled by default in command line mode

v0.7.0

New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski

New : Command `--rm`, to remove source file after successful de/compression

New : Visual build scripts, by Christophe Chevalier

New : Support for Sparse File-systems (do not use space for zero-filled sectors)

New : Frame checksum support

New : Support pass-through mode (when using `-df`)

API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()`

API : create dictionary files from custom content, by Giuseppe Ottaviano

API : support for custom malloc/free functions

New : controllable Dictionary ID

New : Support for skippable frames

v0.6.1

New : zlib wrapper API, thanks to Przemyslaw Skibinski

New : Ability to compile compressor / decompressor separately

Changed : new lib directory structure

Fixed : Legacy codec v0.5 compatible with dictionary decompression

Fixed : Decoder corruption error (#173)

Fixed : null-string roundtrip (#176)

New : benchmark mode can select directory as input

Experimental : midipix support, VMS support

v0.6.0

Stronger high compression modes, thanks to Przemyslaw Skibinski

API : ZSTD_getFrameParams() provides size of decompressed content

New : highest compression modes require `--ultra` command to fully unleash their capacity

Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner

v0.5.1

New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski

Changed : Dictionary builder integrated into libzstd and zstd cli

Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`.

Fix : high compression modes for big-endian platforms

New : zstd cli : `-t` | `--test` command

v0.5.0

New : dictionary builder utility

Changed : streaming & dictionary API

Improved : better compression of small data

v0.4.7

Improved : small compression speed improvement in HC mode

Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default

fix : bt search bug

v0.4.6

fix : fast compression mode on Windows

New : cmake configuration file, thanks to Artyom Dymchenko

Improved : high compression mode on repetitive data

New : block-level API

New : ZSTD_duplicateCCtx()

v0.4.5

new : -m/--multiple : compress/decompress multiple files

v0.4.4

Fixed : high compression modes for Windows 32 bits

new : external dictionary API extended to buffered mode and accessible through command line

new : windows DLL project, thanks to Christophe Chevalier

v0.4.3 :

new : external dictionary API

new : zstd-frugal

v0.4.2 :

Generic minor improvements for small blocks

Fixed : big-endian compatibility, by Peter Harris (#85)

v0.4.1

Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben)

removed `zstd.c`

v0.4.0

Command line utility compatible with high compression levels

Removed zstdhc => merged into zstd

Added : ZBUFF API (see zstd_buffered.h)

Rolling buffer support

v0.3.6

small blocks params

v0.3.5

minor generic compression improvements

v0.3.4

Faster fast cLevels

v0.3.3

Small compression ratio improvement

v0.3.2

Fixed Visual Studio

v0.3.1 :

Small compression ratio improvement

v0.3

HC mode : compression levels 2-26

v0.2.2

Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier

v0.2.1

Fix : Read errors, advanced fuzzer tests, by Hanno Böck

v0.2.0

**Breaking format change**

Faster decompression speed

Can still decode v0.1 format

v0.1.3

fix uninitialization warning, reported by Evan Nemerson

v0.1.2

frame concatenation support

v0.1.1

fix compression bug

detects write-flush errors

v0.1.0

first release

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