ZS

Zstandard

Zstandard (zstd) is a fast, lossless data compression algorithm developed by Meta (formerly Facebook) for real-time compression scenarios, offering high compression ratios and fast decompression speeds. It combines dictionary-matching (LZ77) with entropy coding (Huffman and finite-state entropy) and supports a broad range of compression levels.
Latest: 1.5.7
Last checked: Jun 9, 2026 12:10am
Rank: 3124/15140
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Overview

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License: Dual BSD OR GPLv2Winget: Available

Version & Lifecycle

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Current: 1.5.7 N-2: 1.5.5 Oldest supported: 1.0 Avg cadence: Every 242 days

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

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Also known as

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zstandardmeta zstandard

Packaging Notes

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Reference implementation in C; supports multiple platforms via bindings

Notes

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Zstandard format is stable and documented in RFC 8878. The project is open-source with a dual BSD or GPLv2 license. It is widely used for efficient data storage, transmission, and backup.