pretty good

app/lib/features/geckoview/utils/image_helper.dart

@@ -1,12 +1,24 @@
 import 'dart:typed_data';
 import 'dart:ui';
 
+import 'package:lensai/utils/lru_cache.dart';
+import 'package:xxh3/xxh3.dart';
+
+final _cache = LRUCache<int, Image>(100);
+
 Future<Image?> tryDecodeImage(
   Uint8List bytes, {
   int? targetWidth,
   int? targetHeight,
   bool allowUpscaling = true,
 }) async {
+  final digest = xxh3(bytes);
+
+  final cached = _cache.get(digest);
+  if (cached != null) {
+    return cached;
+  }
+
   try {
     final codec = await instantiateImageCodec(
       bytes,
@@ -19,6 +31,7 @@ Future<Image?> tryDecodeImage(
     final image = frameInfo.image;
 
     if (image.width > 0) {
+      _cache.set(digest, image);
       return image;
     }
   } catch (e) {