This example showcases a web application built with Compose Multiplatform for web and Kotlin/Wasm.
Check it out:
Note: Web support is an Alpha feature. It may be changed at any time. You can use it in scenarios before production. We would appreciate your feedback on GitHub.
Compose Multiplatform for web enables sharing your mobile or desktop UIs on the web.
Compose Multiplatform for web is based on Kotlin/Wasm, the newest target for Kotlin Multiplatform projects. This enables running your code in the browser, leveraging WebAssembly's advantages like high and consistent application performance.
Follow the instructions in the sections below to try out this application built with Compose Multiplatform for web and Kotlin/Wasm.
Before starting, ensure you have the necessary IDE and browser setup to run the application.
We recommend using IntelliJ IDEA 2023.1 or later to work with the project. It supports Kotlin/Wasm out of the box.
To run applications built with Kotlin/Wasm in a browser, you need a browser supporting the Wasm Garbage Collection (GC) feature:
Chrome and Chromium-based
-
For version 119 or later:
Works by default.
Firefox
-
For version 120 or later:
Works by default.
Safari/WebKit
Wasm GC support is currently under active development.
Note: For more information about the browser versions, see the Troubleshooting documentation.
To build and run the application:
- In IntelliJ IDEA, open the repository.
- Run the application by typing one of the following Gradle commands in the terminal:
-
Web version:
./gradlew :composeApp:wasmJsRun
Once the application starts, open the following URL in your browser:
http://localhost:8080Note: The port number can vary. If the port 8080 is unavailable, you can find the corresponding port number printed in the console after building the application.
-
Desktop version:
./gradlew :composeApp:run
Give it a try and share your feedback or questions in our #compose-web Slack channel. Get a Slack invite. You can also share your comments with @bashorov on X (Twitter).
