Kotlin/JS

JavaScript compiler target for Kotlin, set up through the Kotlin Multiplatform Gradle plugin.

Adoption1 site

Ranked 7 of 9 in Compiled-to-Web & WebAssembly0.8% of the 119 tracked sites using Compiled-to-Web & WebAssembly

Pricing: open-source

About Kotlin/JS

Through Kotlin/JS, Kotlin code, its standard library and any compatible dependencies transpile to JavaScript. One use the Kotlin docs give for it is sharing common logic between a web frontend and a backend running on the JVM. JavaScript dependencies can be added straight from npm.

Sources: Kotlin/JS overview · Checked 16 Oct 2026

Websites using Kotlin/JS

onlaunch.app

Who added or dropped it

No switches yet. We rescan every site monthly, and any site that adds or drops Kotlin/JS shows up here.

Often used with

Cloudflare100%

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