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flate2

DEFLATE compression and decompression exposed as Read/BufRead/Write streams. Supports miniz_oxide and multiple zlib implementations. Supports zlib, gzip, and raw deflate streams.

1.1.9 631M downloads/mo #146 most downloaded on crates.io rust-lang/flate2-rs

What this package is like to depend on

Last release 6 months ago

03 Feb 2026

Ships fairly regularly

a new release about every 5 weeks

Rarely documented

notes for 8 of 75 stable releases

2 versions withdrawn

withdrawn after publishing

12 years old

77 releases · first in 2014

7 releases in the last 12 months

see the full history below

Release timeline

77 releases · Nov 2014 to Feb 2026
2015 2017 2019 2021 2023 2025
Release Pre-release Withdrawn

Releases

latest 60 of 77
  1. 1.1.9 03 Feb 2026
    Release notes

    What's Changed

    New Contributors

    • @wgyt made their first contribution in #528

    Full Changelog: 1.1.8...1.1.9

    Open source →
  2. 1.1.8 12 Jan 2026
    Release notes

    What's Changed

    • Document feature flags using document-features crate by @Copilot in #519
    • Complete the zlib-rs support without the need for C-bindings by @Byron in #524
    • test zlib API for all compatible backends by @Byron in #525

    New Contributors

    • @Copilot made their first contribution in #519

    Full Changelog: 1.1.7...1.1.8

    Open source →
  3. 1.1.7 05 Dec 2025 withdrawn
    Release notes

    What's Changed

    New Contributors

    Full Changelog: 1.1.5...1.1.6

    Open source →
  4. 1.1.6 05 Dec 2025 withdrawn
    Release notes

    It caused #515.

    What's Changed

    New Contributors

    Full Changelog: 1.1.5...1.1.6

    Open source →
  5. 1.1.5 24 Oct 2025
    Release notes

    This bugfix release fixes #508, as flush didn't always work anymore in conjunction with miniz_oxide.

    What's Changed

    Full Changelog: 1.1.4...1.1.5

    Open source →
  6. 1.1.4 05 Oct 2025
    Release notes

    See here for the changelog of v1.1.3: https://github.com/rust-lang/flate2-rs/releases/tag/1.1.3 .

    Full Changelog: 1.1.3...1.1.4

    Open source →
  7. 1.1.3 05 Oct 2025
    Release notes

    What's Changed

    • use zlibVersion() instead of a const for the version by @folkertdev in #491
    • Switch from adler2 to simd-adler32 crate when using miniz_oxide backend by @Shnatsel in #492
    • Correct documentation typo by @fintelia in #495
    • Use partial flushes with miniz_oxide backend by @fintelia in #496
    • Undo introducing straight up incorrect documentation by @Shnatsel in #497
    • Update cloudflare-zlib-sys crate by @jongiddy in #503
    • Add (de)compress_uninit that accepts &[MaybeUninit<u8>] by @NobodyXu in #502
    • bump the patch level for a new release by @Byron in #504

    New Contributors

    Full Changelog: 1.1.2...1.1.3

    Open source →
    Release notes

    This tag was signed with the committer’s verified signature .

    Byron Sebastian Thiel

    GPG key ID: 9CB5EE7895E8268B

    Verified Learn about vigilant mode .

    Open source →
  8. 1.1.2 07 Jun 2025
    Release notes

    What's Changed

    Full Changelog: 1.1.1...1.1.2

    Open source →
  9. 1.1.1 02 Apr 2025
    Release notes

    This release should be smaller and thus faster to download.
    Additionally, when using the zlib-rs backend, duplicate symbol issues shouldn't occur anymore.

    What's Changed

    New Contributors

    Full Changelog: 1.1.0...1.1.1

    Open source →
  10. 1.1.0 24 Feb 2025
    Release notes

    What's Changed

    New Contributors

    Full Changelog: 1.0.35...1.1.0

    Open source →
  11. 1.0.35 14 Nov 2024

    Nothing published for this version

  12. 1.0.34 26 Sep 2024

    Nothing published for this version

  13. 1.0.33 24 Aug 2024

    Nothing published for this version

  14. 1.0.32 20 Aug 2024

    Nothing published for this version

  15. 1.0.31 03 Aug 2024

    Nothing published for this version

  16. 1.0.30 29 Apr 2024

    Nothing published for this version

  17. 1.0.29 26 Apr 2024

    Nothing published for this version

  18. 1.0.28 13 Oct 2023

    Nothing published for this version

  19. 1.0.27 15 Aug 2023

    Nothing published for this version

  20. 1.0.26 28 Apr 2023

    Nothing published for this version

  21. 1.0.25 24 Nov 2022

    Nothing published for this version

  22. 1.0.24 28 May 2022

    Nothing published for this version

  23. 1.0.23 11 Apr 2022

    Nothing published for this version

  24. 1.0.22 13 Sep 2021

    Nothing published for this version

  25. 1.0.21 30 Aug 2021

    Nothing published for this version

  26. 1.0.20 29 Jan 2021

    Nothing published for this version

  27. 1.0.19 02 Nov 2020

    Nothing published for this version

  28. 1.0.18 30 Sep 2020

    Nothing published for this version

  29. 1.0.17 18 Aug 2020

    Nothing published for this version

  30. 1.0.16 29 Jun 2020

    Nothing published for this version

  31. 1.0.14 17 Mar 2020

    Nothing published for this version

  32. 1.0.13 11 Nov 2019

    Nothing published for this version

  33. 1.0.12 02 Oct 2019

    Nothing published for this version

  34. 1.0.11 14 Aug 2019

    Nothing published for this version

  35. 1.0.10 14 Aug 2019

    Nothing published for this version

  36. 1.0.9 21 Jun 2019

    Nothing published for this version

  37. 1.0.8 19 Jun 2019

    Nothing published for this version

  38. 1.0.7 14 Mar 2019

    Nothing published for this version

  39. 1.0.6 02 Dec 2018

    Nothing published for this version

  40. 1.0.5 19 Nov 2018

    Nothing published for this version

  41. 1.0.4 16 Oct 2018

    Nothing published for this version

  42. 1.0.3 04 Oct 2018

    Nothing published for this version

  43. 1.0.2 31 Jul 2018

    Nothing published for this version

  44. 1.0.1 30 Nov 2017

    Nothing published for this version

  45. 1.0.0 29 Nov 2017

    Nothing published for this version

  46. 0.2.20 15 Sep 2017

    Nothing published for this version

  47. 0.2.19 12 Apr 2017

    Nothing published for this version

  48. 0.2.18 11 Apr 2017

    Nothing published for this version

  49. 0.2.17 20 Jan 2017

    Nothing published for this version

  50. 0.2.16 20 Jan 2017

    Nothing published for this version

  51. 0.2.15 18 Jan 2017

    Nothing published for this version

  52. 0.2.14 06 May 2016

    Nothing published for this version

  53. 0.2.13 24 Jan 2016

    Nothing published for this version

  54. 0.2.12 18 Jan 2016

    Nothing published for this version

  55. 0.2.11 09 Nov 2015

    Nothing published for this version

  56. 0.2.10 07 Nov 2015

    Nothing published for this version

  57. 0.2.9 09 Sep 2015

    Nothing published for this version

  58. 0.2.8 31 Aug 2015

    Nothing published for this version

  59. 0.2.7 23 Apr 2015

    Nothing published for this version

  60. 0.2.6 03 Apr 2015

    Nothing published for this version

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