diff --git a/app/(protected)/activity/add.tsx b/app/(protected)/activity/add.tsx
index ed3e4b9..3dffc86 100644
--- a/app/(protected)/activity/add.tsx
+++ b/app/(protected)/activity/add.tsx
@@ -117,6 +117,8 @@ export default function ActivityFormScreen() {
                 allowsMultipleSelection: true,
                 selectionLimit: limit,
                 quality: 0.8,
+                // iOS: converte HEIC in JPEG, formato gestito dal backend e visualizzabile sul web
+                preferredAssetRepresentationMode: ImagePicker.UIImagePickerPreferredAssetRepresentationMode.Compatible,
             });
 
             if (!result.canceled && result.assets) {