An implementation of a Lightbox for Jetpack Compose. Press an image anywhere in your layout to open a gallery of images.

https://github.com/user-attachments/assets/247b350f-be37-4e02-bbbc-dad781d624bb

• For Android: SDK level 23+
• Compose Multiplatform 1.11 or higher

This library currently supports Android and iOS. For older Android phones, use version 1.x without Multiplatform support.

This library depends on Coil 3 for image loading and display. Follow the Quick Start instructions to connect it a networking library like Ktor or OkHttp.

Once a regular AsyncImage() loads successfully in your app, you can integrate ComposeLightbox.

Add the ComposeLightbox dependency to the build.gradle of your app:

implementation("io.github.x-sheep:compose-lightbox:2.0.0")

1. Add LightboxHost above your Scaffold, to make sure the overlay covers the entire app screen.
2. Create a list of PhotoItem objects to describe each image.
3. Display the images in your layout with LightboxImage. This composable will automatically add a Click handler.

Simple example:

import io.github.xsheep.composelightbox.*

@Composable
fun Gallery() {
  LightboxHost {
    Scaffold { padding ->
      val photoList = remember {
          listOf<PhotoItem>() // Add your photos here
      }

      LazyColumn(contentPadding = padding) {
        items(photoList) {
          LightboxImage(photoList, it, Modifier.size(300.dp))
        }
      }
    }
  }
}

If your layout is changing size when the Lightbox opens and closes, you can try increasing the window insets used in your Scaffold:

Scaffold(contentWindowInsets = WindowInsets.mandatorySystemGestures.union(WindowInsets.displayCutout))

Copyright (c) 2025-2026 Lennard Sprong. MIT License