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scalalandio/chimney

Scala library for boilerplate-free, type-safe data transformations
Source code at GitHub https://chimney.readthedocs.io
scalalandio/chimney.json
{
  "createdAt": "2017-05-23T11:24:09Z",
  "defaultBranch": "master",
  "description": "Scala library for boilerplate-free, type-safe data transformations",
  "fullName": "scalalandio/chimney",
  "homepage": "https://chimney.readthedocs.io",
  "language": "Scala",
  "name": "chimney",
  "pushedAt": "2026-07-20T03:20:37Z",
  "stargazersCount": 1254,
  "topics": [
    "auto-mapping",
    "automatic-conversion",
    "boilerplate",
    "contributors-welcome",
    "conversion",
    "data-rewriting",
    "derivation",
    "generic-programming",
    "jvm",
    "macros",
    "metaprogramming",
    "scala",
    "scala-library",
    "scala-native",
    "scala3",
    "scalajs",
    "transformation",
    "type-mapping"
  ],
  "updatedAt": "2026-07-13T16:43:20Z",
  "url": "https://github.com/scalalandio/chimney"
}

Chimney logo

Chimney

Section titled “Chimney”

Chimney Scala version support

CI build codecov.io License Join the discussions at https://github.com/scalalandio/chimney/discussions

Documentation Status Scaladoc 2.11 Scaladoc 2.12 Scaladoc 2.13 Scaladoc 3

The battle-tested Scala library for data transformations. Supported for (2.13, 3.8.4+) x (JVM, Scala.js, Scala Native). On the JVM, Scala 2.13 artifacts require JDK 11+ and Scala 3 artifacts require JDK 17+. Powered by Hearth.

Chimney documentation is available at https://chimney.readthedocs.io. Read the Docs keeps it versioned in case you need to access documentation for older versions.

If you are looking to up-to-date artifacts versions ready to copy-paste into your build tool, we recommend Scaladex or Maven Repository.

[!note]

This is the code for the Chimney 2.x line. If you are looking for the Chimney 1.x line that targetted Scala 2.12, 2.13 and 3.3 see the line-1.x branch.

Adopters

Section titled “Adopters”

If your company is using Chimney, please consider adding it to the list below:

Contribution

Section titled “Contribution”

A way to get started is described in [CONTRIBUTING.md]!(CONTRIBUTING.md) and the general overview of the architecture is given in [DESIGN.md]!(DESIGN.md) and in Under the hood section of the documentation.