A code formatter is an automated tool designed to adjust source code according to a predetermined set of formatting guidelines, like how indentation and spacing should look and where line breaks should go. By doing this, it enhances the code’s readability and maintains consistency, all while ensuring that the code’s functionality remains unchanged. This not only saves developers valuable time but also helps minimize disagreements over style preferences.
This type of software means coders cede control over minutiae of hand-formatting. In return, the software offers speed, determinism, and freedom from pycodestyle nagging about formatting. Save time and mental energy for more important matters.
This roundup selects some useful code formatters for Kotlin developers.
Here’s our verdict captured in a legendary LinuxLinks-style ratings chart. Only free and open source software is eligible for inclusion.
Click the links in the table below to learn more about each tool.
| 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 |
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