ktlint is a Kotlin linter in spirit of feross/standard (JavaScript) and gofmt (Go).
This is free and open source software.
Key Features
- No configuration required – aims to capture the Kotlin coding conventions and Android Kotlin Style Guide. In some aspects ktlint is a bit more strict.
- Built-in Rule sets.
- Built-in formatter – most lint violations don’t need to be fixed manually. ktlint has a built-in formatter which fixes violations when possible. Some violations can not be fixed in a deterministic way, and need manual action.
- .editorconfig support – primarily uses the .editorconfig file to read default .editorconfig, IntelliJ IDEA specific and Ktlint specific properties.
- Several built-in reporters: plain, json, html and checkstyle.
- Executable jar – released as a single executable jar with all dependencies included.
- Allows extension with custom rule sets and reporters.
Website: github.com/ktlint/ktlint
Support:
Developer: Pinterest, Inc.
License: MIT License
ktlint is written in Kotlin. Learn Kotlin with our recommended free books and free tutorials.
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Related Software
| Kotlin Linters | |
|---|---|
| ktlint | Kotlin linter with built-in formatter |
| detekt | Static code analysis for Kotlin |
| Konsist | Static code analyzer tailored for Kotlin |
| Ktlint Gradle | Gradle plugin that wires ktlint formatting into builds |
| Kotlinter Gradle | Plugin for linting and formatting |
| faire-detekt-rules | Opinionated detekt rules for cleaner, safer Kotlin code |
| Compose Rules | Static analysis checks that tighten Jetpack Compose quality |
Read our verdict in the software roundup.
| Kotlin Code Formatters | |
|---|---|
| ktlint | Kotlin linter with built-in formatter |
| Spotless | Keeps codebases pristine with automated formatting checks |
| ktfmt | Pretty-prints (formats) Kotlin code |
| ktlint-gradle | Runs ktlint from Gradle to enforce Kotlin style rules |
| Kotlinter Gradle | Plugin for linting and formatting |
| ktlint-gradle-plugin | Brings Kotlin linting and formatting checks into Gradle projects |
| ktfmt-gradle | Adds ktfmt formatting to Gradle builds with minimal fuss. |
| Kotlin Formatter | Formats Kotlin source with a simple, consistent command-line tool |
Read our verdict in the software roundup.
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