Brotli

Brotli 1.2.1

Brotli is a generic-purpose lossless compression algorithm that compresses data.

Download for Windows

About Brotli

Brotli is a generic-purpose lossless compression algorithm that compresses data.

What's new in 1.2.1

SECURITY

  • CVE-2026-111497: out-of-bounds write permits remote code execution

Full release notes »

Technical details

PublisherGoogle
Version1.2.1
Release date2026-10-21
LicenseMIT
Installer typezip
Architecturex86, x64, arm64
Package IDGoogle.Brotli
DependenciesMicrosoft.VCRedist.2015+.x64

Install Brotli from the command line

Install with Windows Package Manager
winget install --id=Google.Brotli -e
Update to the latest version
winget upgrade --id=Google.Brotli -e
Uninstall
winget uninstall --id=Google.Brotli -e

Brotli version history

1.2.0 Oct 27, 2025

SECURITY
- python: added Decompressor::can_accept_more_data method and optional
output_buffer_limit argument Decompressor::process;
that allows mitigation of unexpectedly large output;
reported by Charles Chan (https://github.com/charleswhchan)
Added
- decoder / encoder: added static initialization to reduce binary size
- python: allow limiting decoder output (see SECURITY section)
- CLI: brcat alias; allow decoding concatenated brotli streams
- kt: pure Kotlin decoder
- cgo: support "raw" dictionaries
- build: Bazel modules
Removed
- java: dropped finalize() for native entities
Fixed
- java: in compress pass correct length to native encoder
Improved
- build: install man pages
- build: updated / fixed / refined Bazel buildfiles
- encoder: faster encoding
- cgo: link via pkg-config
- python: modernize extension / allow multi-phase module initialization
Changed
- decoder / encoder: static tables use "small" model (allows 2GiB+ binaries)

1.1.0

Frequently asked questions

Is Brotli free?

Yes. Brotli is free and open-source software released under the MIT license.

What is the latest version of Brotli?

The latest version is 1.2.1, released on Oct 21, 2026.

Is it safe to download Brotli?

The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 9556acc3223662402cbc5b1a3fa3c4328badf231a7ed1be7128fc6750207188e.

Which Windows versions does Brotli support?

Brotli runs on Windows and is available for 32-bit (x86), 64-bit (x64), ARM64 systems.

How do I uninstall Brotli?

Open Settings › Apps › Installed apps, find Brotli and select Uninstall. From the command line, run winget uninstall --id=Google.Brotli -e.

Is there a portable version of Brotli?

Yes. Brotli is available as a portable ZIP archive (brotli-x64-windows-static.zip, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.

Alternatives to Brotli

Other File Compression programs for Windows from different developers.

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