diff --git a/lib/main.dart b/lib/main.dart
index eed7cade..b3fe3480 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -63,6 +63,14 @@ void main(List<String> args) async {
       WidgetsFlutterBinding.ensureInitialized();
       if (Platform.isLinux && runWebViewTitleBarWidget(args)) return;
 
+      // Cap the decoded image cache so a large library grid can't fill the
+      // default 100 MB ceiling with full-resolution covers and OOM constrained
+      // mobile heaps. Mobile gets a tight 64 MB; desktop keeps 256 MB. The
+      // encoded-bytes LRU in CustomExtendedNetworkImageProvider (50 MB) is a
+      // separate cache and is not affected by this setting.
+      PaintingBinding.instance.imageCache.maximumSizeBytes =
+          isMobile ? 64 << 20 : 256 << 20;
+
       // Widget-layer errors (build / layout / paint)
       FlutterError.onError = (FlutterErrorDetails details) {
         FlutterError.presentError(details); // keep default red-screen in debug