Do I need to commit .gitignore?

Yes — .gitignore should be committed to the repository so all collaborators benefit from the same ignore rules.

How do I add custom patterns?

Open your .gitignore file and add the pattern on a new line. Use # for comments, * for wildcards, / to match directories, and ! to un-ignore a previously ignored path.

How do I ignore a file that is already tracked?

Adding a file to .gitignore does not remove it from tracking if it was previously committed. Run: git rm --cached to stop tracking it without deleting the file locally.

.gitignore for Kotlin + JetBrains

.gitignore for Kotlin projects developed in IntelliJ IDEA or Android Studio.

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JetBrainsKotlin

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20 patterns · 479 B

# Generated by DevZone Tools — https://devzone.tools/tools/gitignore-generator
# Templates: JetBrains, Kotlin
# 2026-04-20

# ---- JetBrains ----
# JetBrains IDEs
.idea/
*.iws
*.iml
*.ipr
out/
!**/src/main/**/out/
!**/src/test/**/out/
.idea/caches/
.idea/libraries/
.idea/modules/
.idea/modules.xml
.idea/workspace.xml

# ---- Kotlin ----
# Kotlin
.gradle/
build/
!gradle/wrapper/gradle-wrapper.jar
!**/src/main/**/build/
!**/src/test/**/build/
*.class
*.log
/local.properties

Why use Kotlin + JetBrains together?

Kotlin development primarily happens in JetBrains IDEs. Whether you're building Android apps (Android Studio) or server-side Kotlin (IntelliJ IDEA), this combination covers all the IDE metadata and Kotlin/JVM build artifacts.

Related combinations

androidstudio-kotlin kotlin-spring

Frequently asked questions

Do I need to commit .gitignore?: Yes — .gitignore should be committed to the repository so all collaborators benefit from the same ignore rules.
How do I add custom patterns?: Open your .gitignore file and add the pattern on a new line. Use # for comments, * for wildcards, / to match directories, and ! to un-ignore a previously ignored path.
How do I ignore a file that is already tracked?: Adding a file to .gitignore does not remove it from tracking if it was previously committed. Run: git rm --cached <file> to stop tracking it without deleting the file locally.
Why combine JetBrains and Kotlin?: Kotlin development primarily happens in JetBrains IDEs. Whether you're building Android apps (Android Studio) or server-side Kotlin (IntelliJ IDEA), this combination covers all the IDE metadata and Kotlin/JVM build artifacts.

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