Mirror of Apache Commons Compress

Clone this repo:
  1. 0d3d7c7 Remove unused imports by Emmanuel Bourg · 8 days ago master
  2. 232c923 Simplify a stream expression in SevenZFile by Emmanuel Bourg · 8 days ago
  3. 0a55fcc Use lambda expressions by Emmanuel Bourg · 8 days ago
  4. a9ed022 Use static import for StandardCharsets by Emmanuel Bourg · 8 days ago
  5. 4c46384 Use the diamond operator by Emmanuel Bourg · 8 days ago

Apache Commons Compress

Build Status Coverage Status Maven Central Javadocs Fuzzing Status

Note: Commons Compress currently doesn't build on JDK 14+, we will address this before releasing Compress 1.21.

Apache Commons Compress software defines an API for working with compression and archive formats. These include: bzip2, gzip, pack200, lzma, xz, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.


More information can be found on the Apache Commons Compress homepage. The Javadoc can be browsed. Questions related to the usage of Apache Commons Compress should be posted to the user mailing list.

Where can I get the latest release?

You can download source and binaries from our download page.

Alternatively you can pull it from the central Maven repositories:



We accept Pull Requests via GitHub. The developer mailing list is the main channel of communication for contributors. There are some guidelines which will make applying PRs easier for us:

  • No tabs! Please use spaces for indentation.
  • Respect the code style.
  • Create minimal diffs - disable on save actions like reformat source code or organize imports. If you feel the source code should be reformatted create a separate PR for this change.
  • Provide JUnit tests for your changes and make sure your changes don't break any existing tests by running mvn clean test.

If you plan to contribute on a regular basis, please consider filing a contributor license agreement. You can learn more about contributing via GitHub in our contribution guidelines.


This code is under the Apache Licence v2.

See the NOTICE.txt file for required notices and attributions.


You like Apache Commons Compress? Then donate back to the ASF to support the development.

Additional Resources