diff --git a/settings/quickshell.nix b/settings/quickshell.nix
index 12d444c..bf03f3a 100644
--- a/settings/quickshell.nix
+++ b/settings/quickshell.nix
@@ -6902,6 +6902,12 @@ in
                                         Image {
                                             anchors.fill: parent
                                             fillMode: Image.PreserveAspectCrop
+                                            // Decode to thumbnail height: without this a
+                                            // screenshot notification keeps a full-resolution
+                                            // 3440x1440 texture (~19MB) resident for as long
+                                            // as it is tracked — 30 retained notifications is
+                                            // half a gigabyte of VRAM for 48px previews.
+                                            sourceSize.height: 96
                                             source: notifItem.previewSource
                                         }
                                     }
@@ -7246,6 +7252,8 @@ in
                                 Image {
                                     anchors.fill: parent
                                     fillMode: Image.PreserveAspectCrop
+                                    // Same full-res-texture trap as the list preview.
+                                    sourceSize.height: 96
                                     source: toastCard.previewSource
                                 }
                             }