open url compose

---

title: "How do I open a URL from a Compose button?" reviewed_by: date: 2026-06 version: 3.5.x

How do I open a URL from a Compose button?

Quick start (minimal MWE)

import androidx.compose.material3.Button
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.rememberCoroutineScope
import com.mobilebytelabs.kmptoolkit.openurl.OpenUrl
import kotlinx.coroutines.launch

@Composable
fun OpenDocsButton() {
    val scope = rememberCoroutineScope()
    Button(onClick = {
        scope.launch {
            OpenUrl.open("https://mobilebytelabs.github.io/KmpToolkit/")
        }
    }) { Text("Open docs site") }
}

Caveats / per-platform notes

• iOS / Android: opens in the platform's default browser; use a Custom Tabs / SFSafariViewController wrapper if you need in-app browsing.
• JS / wasmJs: uses window.open(url, '_blank') — popup blockers may intercept; must be called from a user-gesture handler.
• JVM Desktop: calls Desktop.browse(); falls back to xdg-open on Linux if AWT is unavailable.

Related

• Module: cmp-open-url
• Sample: samples/sample-cmp-open-url/composeApp/.../OpenUrlDemo.kt
• See also: cmp-deep-link for routing incoming URLs into your app.