Brotli is a Ruby implementation of the Brotli generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.


Add this line to your application's Gemfile:

gem 'brotli'

And then execute:

$ bundle

Or install it yourself as:

$ gem install brotli


require 'brotli'
compressed = Brotli.deflate(string)
decompressed = Brotli.inflate(compressed)

See spec/brotli_spec.rb


After checking out the repo, run bin/setup to install bundle and Brotli C library dependencies.

Run rake build to build brotli extension for ruby. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at