Zstandard

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File Format
Name Zstandard
Ontology
Extension(s) .zst
Released 2015

Zstandard, or Zstd, is a general-purpose compression algorithm and file format. It is designed to have a good balance between compression ratio, compression speed, and decompression speed.

Contents

Identification

For at least some versions of Zstd format, files begin with signature bytes 25 b5 2f fd. For files created since version 0.8.0 (August 2016[1]), the header is instead 28 b5 2f fd[2].

Software

Links

References

  1. https://github.com/facebook/zstd/releases/tag/v0.8.0
  2. https://github.com/facebook/zstd/blob/dev/lib/zstd.h, edeinition of ZSTD_MAGICNUMBER
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