ktlint ☆

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Description:
Anti-bikeshedding Kotlin linter with built-in formatter

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: kotlin linter formatter code-quality developer-tools

Install: brew install ktlint

About:
Ktlint is a Kotlin linter that enforces the official Kotlin coding conventions and provides additional, opinionated rules to prevent code style debates. It features a built-in formatter that automatically fixes style violations, ensuring consistent code formatting across projects. The tool integrates easily into build pipelines and IDEs, helping teams maintain clean, readable codebases.

Key Features:

Built-in automatic formatter
Enforces Kotlin coding conventions
Zero configuration required
Extensible via custom rule sets
IDE and CI/CD integration

Use Cases:

Enforcing consistent code style across Kotlin projects
Automated code formatting in CI pipelines
Preventing code style debates during code reviews

Alternatives:

detekt – Detekt is a static code analysis tool with broader code smell detection, while ktlint focuses primarily on code style and formatting
android-studio – Android Studio includes built-in formatting but ktlint provides consistent, project-wide enforcement independent of IDE

Version History

Detected	Version	Rev	Change	Commit
Dec 15, 2024 11:22am		0	VERSION_BUMP	a54e3ef8
Dec 4, 2024 11:38am		0	VERSION_BUMP	c1357e18