zstd VS LZ4

Compare zstd vs LZ4 and see what are their differences.


Zstandard - Fast real-time compression algorithm (by facebook)


Extremely Fast Compression algorithm (by lz4)
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zstd LZ4
105 21
22,356 9,192
2.2% 1.7%
9.7 9.5
7 days ago 7 days ago
GNU General Public License v3.0 or later GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of zstd. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-04-01.


Posts with mentions or reviews of LZ4. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-03-21.
  • Number sizes for LZ77 compression
    1 project | /r/compression | 30 Apr 2023
    LZ4 is a bit more complicated, but seems faster: https://github.com/lz4/lz4/blob/dev/doc/lz4_Block_format.md
  • Rsyncing 20TB locally
    2 projects | /r/zfs | 21 Mar 2023
    According to these https://github.com/lz4/lz4 values you need around ten (10) quite modern cores in parallel to accomplish around 8GB/s.
  • An Intro to Data Compression
    1 project | dev.to | 17 Feb 2023
    The popular NoSQL database Cassandra utilizes a compression algorithm called LZ4 to reduce the footprint of data at rest. LZ4 is characterized by very fast compression speed at the cost of a higher compression ratio. This is a design choice that allows Cassandra to maintain high write throughput while also benefiting from compression in some capacity.
  • Micron Unveils 24GB and 48GB DDR5 Memory Modules | AMD EXPO and Intel XMP 3.0 compatible
    1 project | /r/gadgets | 21 Jan 2023
    Yeah, sure, when you have monster core counts. on regular systems, not so much, here's from their own github page. it achieves, eh, 5GB/s on memory to memory transfers, i.e. best case scenario. so, uh, no? i'm not even sure it's any better than the CPU decompressor one Nvidia used.
  • Cerbios Xbox Bios V2.2.0 BETA Released (1.0 - 1.6)
    2 projects | /r/originalxbox | 31 Dec 2022
  • zstd
    8 projects | news.ycombinator.com | 19 Dec 2022
    > The downside of lz4 is that it can’t be configured to run at higher & slower compression ratios.

    lz4 has some level of configurability? https://github.com/lz4/lz4/blob/v1.9.4/lib/lz4frame.h#L194

    There's also LZ4_HC.

  • Best archival/compression format for whole hard drives
    1 project | /r/DataHoarder | 7 Dec 2022
    Since nobody mentioned it, I'll add lz4 (https://github.com/lz4/lz4).
  • I'm new to this
    2 projects | /r/androidroot | 28 Nov 2022
    Get your bootloader unlocked via Download mode and then obtain your stock firmware, preferably for your current region https://samfw.com (Download mode: CARRIER_CODE). Get the boot image from AP with 7zip, unpack from LZ4 with https://github.com/lz4/lz4/releases (drag and drop), patch with Magisk https://github.com/topjohnwu/magisk/releases/latest, grab the new image, name it "boot.img" and pack it into a .tar with 7zip and flash to AP with odin https://odindownload.com
  • An efficient image format for SDL
    4 projects | /r/gamedev | 28 Sep 2022
    After some investigations and experiments, I found out that it was the PNG compression (well, decompression I should say) that took a while. So I've made some experiments using the LZ4 compression library, which is focused on decompression speed, and it turned out to be an excellent solution!
  • how to root Samsung galaxy note 10 plus 5g(SM-N976B
    1 project | /r/androidroot | 21 Jul 2022
    Root with magisk: whether you use OneUI ≤3 or 4, patch the specific image needed for it (pre 4: boot, after 4: recovery) and flash it to the device. Boot it and enjoy root. https://github.com/lz4/lz4/releases can help extracting it from the AP tarball.

What are some alternatives?

When comparing zstd and LZ4 you can also consider the following projects:

Snappy - A fast compressor/decompressor

LZMA - (Unofficial) Git mirror of LZMA SDK releases

brotli - Brotli compression format

7-Zip-zstd - 7-Zip with support for Brotli, Fast-LZMA2, Lizard, LZ4, LZ5 and Zstandard

ZLib - A massively spiffy yet delicately unobtrusive compression library.

haproxy - HAProxy Load Balancer's development branch (mirror of git.haproxy.org)

LZFSE - LZFSE compression library and command line tool