Zstd

Zstandard
Original author(s)Yann Collet
Developer(s)Yann Collet, Nick Terrell, Przemysław Skibiński
Initial release23 January 2015 (2015-01-23)
Stable release
1.5.7  / 20 February 2025 (20 February 2025)
Repository
Written inC
Operating systemCross-platform
PlatformPortable
TypeData compression
LicenseBSD-3-Clause or GPL-2.0-or-later (dual-licensed)
Websitefacebook.github.io/zstd/ 

Zstandard is a lossless data compression algorithm developed by Yann Collet at Facebook. Zstd is the corresponding reference implementation in C, released as open-source software on 31 August 2016.

The algorithm was published in 2018 as RFC 8478, which also defines an associated media type "application/zstd", filename extension "zst", and HTTP content encoding "zstd".