TextText-based

`text/x-kotlin`

Kotlin Source

Reference for text/x-kotlin, the MIME type for Kotlin programming language source files used in Android and JVM development.

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Expected extensions: .kt, .kts

HTTP Content-Type Header

HTTP Header

Content-Type: text/x-kotlin; charset=utf-8

Associated File Extensions

.kt.kts

Quick Facts

MIME Type	text/x-kotlin
Category	Text
Type	Text-based (human-readable)
Extensions	.kt, .kts

Common Usage

Kotlin is the preferred language for Android development and runs on the JVM alongside Java. It is used for Android apps, server-side development (Ktor, Spring), multiplatform projects (KMP), and Gradle build scripts (.kts).

Kotlin offers null safety and concise syntax.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.kt" type="text/x-kotlin">

<!-- Or for script/media elements -->
<script type="text/x-kotlin" src="file.kt"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('text/x-kotlin');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'text/x-kotlin' });

nginx

# nginx.conf — add to types block or use default
types {
    text/x-kotlin  kt kts;
}

# Or set for a specific location
location /api/ {
    default_type text/x-kotlin;
}