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flate2

1.1.10722M downloads/morust-lang/flate2-rs ↗New releases in your daily digest, changelog included.

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

Last release 1 months ago
28 Aug 2026
Release timing varies
gaps range from 3 weeks to 7 months
Rarely documented
notes for 9 of the last 60 stable releases
2 versions withdrawn
withdrawn after publishing
12 years old
78 releases · first in 2014

Release timeline

78 releases since 2014

Releases

1.1.1028 Aug 2026
feat: reuse zlib's decoder buffer by @Vaiz in #532
What's Changed

feat: reuse zlib's decoder buffer by @Vaiz in #532

feat: add reset method for read::GzDecoder and buffered::GzDecoder by @Vaiz in #534

Drop cloudflare-zlib by @kornelski in #539

Add a wrapper for the Crc struct by @MikkelPaulson in #540

Bump miniz_oxide to 0.9 by @oscargus in #543

Upgrade miniz_oxide and add unit tests of the different flush kinds by @fintelia in #498

Fix infinite loop in writing gzip header/footer by @Shnatsel in #547

test: generate corrupt gzip fixture at runtime by @nanookclaw in #550

Reject oversized gzip extra fields by @Byron in #553

Reject incomplete deflate streams at EOF by @Guflly in #556

Include README.md in a private module by @bushrat011899 in #562

Add no_std support using nightly alloc_io by @bushrat011899 in #559

Update get_mut() documentation to make clear how 'inner` can be used by @Byron in #558

New Contributors

@Vaiz made their first contribution in #532

@MikkelPaulson made their first contribution in #540

@oscargus made their first contribution in #543

@nanookclaw made their first contribution in #550

@Guflly made their first contribution in #556

@bushrat011899 made their first contribution in #562

Full Changelog: 1.1.9...1.1.10

2014201620182020202220242026

20142026

One column per quarter.

1.1.93 Feb 2026

use zlib-rs for crc32 (when available) by @folkertdev in #526

What's Changed

use zlib-rs for crc32 (when available) by @folkertdev in #526
Add tests to check data CRC by @jongiddy in #527
update LICENSE-MIT by @wgyt in #528
upgrade zlib-rs to version 0.6.0 by @folkertdev in #529

New Contributors

@wgyt made their first contribution in #528

Full Changelog: 1.1.8...1.1.9

Open source →

1.1.812 Jan 2026

Document feature flags using document-features crate by @Copilot in #519

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 →

1.1.75 Dec 2025withdrawn

chore: make some documents clearer by @reddaisyy in #510

What's Changed

chore: make some documents clearer by @reddaisyy in #510
Explain rationale for choosing bufread,read,write modules by @jongiddy in #512
use Decompress::reset() instead of recreating in DeflateDecoder by @amirshukayev in #514
use zlib_rs api by @folkertdev in #513

New Contributors

@reddaisyy made their first contribution in #510
@amirshukayev made their first contribution in #514

Full Changelog: 1.1.5...1.1.6

Open source →

1.1.65 Dec 2025withdrawn

chore: make some documents clearer by @reddaisyy in #510

It caused #515.

What's Changed

chore: make some documents clearer by @reddaisyy in #510
Explain rationale for choosing bufread,read,write modules by @jongiddy in #512
use Decompress::reset() instead of recreating in DeflateDecoder by @amirshukayev in #514
use zlib_rs api by @folkertdev in #513

New Contributors

@reddaisyy made their first contribution in #510
@amirshukayev made their first contribution in #514

Full Changelog: 1.1.5...1.1.6

Open source →

1.1.524 Oct 2025

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

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

What's Changed

Revert flush change by @fintelia in #509

Full Changelog: 1.1.4...1.1.5

Open source →

1.1.45 Oct 2025

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 →

1.1.35 Oct 2025

use zlibVersion() instead of a const for the version by @folkertdev in #491

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

@fintelia made their first contribution in #495

Full Changelog: 1.1.2...1.1.3

Open source →

Additional notes

Compare

Open source →

1.1.27 Jun 2025

feat: simplify manual bits extraction and an unneeded reref by @CosminPerRam in #484

What's Changed

feat: simplify manual bits extraction and an unneeded reref by @CosminPerRam in #484
chore: update deps by @CosminPerRam in #485
feat: solve remaining clippy warnings and add it to CI by @CosminPerRam in #487
ci: add audit check by @CosminPerRam in #488
feat: revert most recent deps updates by @CosminPerRam in #489
upgrade zlib-rs to version 0.5.1 by @folkertdev in #490

Full Changelog: 1.1.1...1.1.2

Open source →

1.1.12 Apr 2025

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

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

docs: Update README to promote zlib-rs by @Xuanwo in #470
Update miniz_oxide to 0.8.5 by @oyvindln in #475
Remove stale CHANGELOG.md by @jayvdb in #476
More informative README on backends by @Shnatsel in #480
Rewrite outdated backend notes in lib.rs by @Shnatsel in #481
upgrade zlib-rs to version 0.5.0 by @folkertdev in #482

New Contributors

@Xuanwo made their first contribution in #470
@jayvdb made their first contribution in #476

Full Changelog: 1.1.0...1.1.1

Open source →

1.1.024 Feb 2025

update CI to use new wasi target by @oyvindln in #444

What's Changed

Fix cfgs by @kornelski in #441
update CI to use new wasi target by @oyvindln in #444
Implement Clone for CompressError and DecompressError by @mkrasnitski in #445
Update LICENSE-MIT by @maximevtush in #448
feat: replace custom u16 le parser with existent rust method by @CosminPerRam in #450
Fix CI by @Byron in #449
Do not use cloudflare-zlib-sys 0.3.4 by @jongiddy in #451
Increase minimum compiler version to 1.67 by @jongiddy in #452
deps: bump miniz_oxide to 0.8.4 by @CosminPerRam in #459
deps(dev): update rand to 0.9 by @CosminPerRam in #458
docs: fix spelling mistake in flate2::zlib::write::ZlibDecoder by @CosminPerRam in #455
feat: remove explicit default impls by @CosminPerRam in #457
Change private bounds from R: Read to R: BufRead by @JonathanBrouwer in #453
feat: replace manual copy loop with rust-provided function by @CosminPerRam in #456
feat: reduce CrcReader::sum calls in GzEncoder::read_footer by @CosminPerRam in #454
feat: remove redundant if guard on option value match by @CosminPerRam in #464
feat: add Error associated type in zio::Ops to handle multiple errors by @CosminPerRam in #461
feat: remove explicit redundant lifetime by @CosminPerRam in #465
feat: impl From to MZFlush by @CosminPerRam in #462
upgrade zlib-rs to version 0.4.2 by @folkertdev in #466

New Contributors

@mkrasnitski made their first contribution in #445
@maximevtush made their first contribution in #448
@CosminPerRam made their first contribution in #450
@JonathanBrouwer made their first contribution in #453

Full Changelog: 1.0.35...1.1.0

Open source →

1.0.3514 Nov 2024