diff --git a/plugins/Toolbox/resources/qml/components/ToolboxDownloadsGridTile.qml b/plugins/Toolbox/resources/qml/components/ToolboxDownloadsGridTile.qml
index 51afddb6f3..49c8c4573e 100644
--- a/plugins/Toolbox/resources/qml/components/ToolboxDownloadsGridTile.qml
+++ b/plugins/Toolbox/resources/qml/components/ToolboxDownloadsGridTile.qml
@@ -66,6 +66,8 @@ Item
             anchors.centerIn: parent
             width: UM.Theme.getSize("toolbox_thumbnail_small").width - UM.Theme.getSize("wide_margin").width
             height: UM.Theme.getSize("toolbox_thumbnail_small").height - UM.Theme.getSize("wide_margin").width
+            sourceSize.width: width
+            sourceSize.height: height
             fillMode: Image.PreserveAspectFit
             source: model.icon_url || "../../images/placeholder.svg"
             mipmap: true
diff --git a/plugins/Toolbox/resources/qml/components/ToolboxDownloadsShowcaseTile.qml b/plugins/Toolbox/resources/qml/components/ToolboxDownloadsShowcaseTile.qml
index 4dae6ac168..1ee38b02e5 100644
--- a/plugins/Toolbox/resources/qml/components/ToolboxDownloadsShowcaseTile.qml
+++ b/plugins/Toolbox/resources/qml/components/ToolboxDownloadsShowcaseTile.qml
@@ -22,6 +22,8 @@ Rectangle
         id: thumbnail
         height: UM.Theme.getSize("toolbox_thumbnail_large").height - 4 * UM.Theme.getSize("default_margin").height
         width: UM.Theme.getSize("toolbox_thumbnail_large").height - 4 * UM.Theme.getSize("default_margin").height
+        sourceSize.height: height
+        sourceSize.width: width
         fillMode: Image.PreserveAspectFit
         source: model.icon_url || "../../images/placeholder.svg"
         mipmap: true
diff --git a/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml b/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
index 35144d4630..b33036847b 100644
--- a/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
+++ b/plugins/Toolbox/resources/qml/dialogs/CompatibilityDialog.qml
@@ -71,6 +71,8 @@ UM.Dialog{
                                 source: model.icon_url || "../../images/placeholder.svg"
                                 height: lineHeight
                                 width: height
+                                sourceSize.height: height
+                                sourceSize.width: width
                                 mipmap: true
                                 fillMode: Image.PreserveAspectFit
                             }
@@ -114,6 +116,8 @@ UM.Dialog{
                                 source: model.icon_url || "../../images/placeholder.svg"
                                 height: lineHeight
                                 width: height
+                                sourceSize.height: height
+                                sourceSize.width: width
                                 mipmap: true
                                 fillMode: Image.PreserveAspectFit
                             }
diff --git a/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml b/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
index 17ece52292..6e6df2ee67 100644
--- a/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
+++ b/plugins/Toolbox/resources/qml/dialogs/ToolboxLicenseDialog.qml
@@ -53,6 +53,8 @@ UM.Dialog
                 id: icon
                 width: 30 * screenScaleFactor
                 height: width
+                sourceSize.width: width
+                sourceSize.height: height
                 fillMode: Image.PreserveAspectFit
                 source: licenseModel.iconUrl || "../../images/placeholder.svg"
                 mipmap: true
diff --git a/plugins/Toolbox/resources/qml/pages/ToolboxDetailPage.qml b/plugins/Toolbox/resources/qml/pages/ToolboxDetailPage.qml
index 3917aebb41..3c28763862 100644
--- a/plugins/Toolbox/resources/qml/pages/ToolboxDetailPage.qml
+++ b/plugins/Toolbox/resources/qml/pages/ToolboxDetailPage.qml
@@ -48,6 +48,10 @@ Item
                 fillMode: Image.PreserveAspectFit
                 source: details === null ? "" : (details.icon_url || "../../images/placeholder.svg")
                 mipmap: true
+                height: UM.Theme.getSize("toolbox_thumbnail_large").height - 4 * UM.Theme.getSize("default_margin").height
+                width: UM.Theme.getSize("toolbox_thumbnail_large").height - 4 * UM.Theme.getSize("default_margin").height
+                sourceSize.height: height
+                sourceSize.width: width
             }
         }