diff --git a/kcms/lookandfeel/kcm.h b/kcms/lookandfeel/kcm.h
--- a/kcms/lookandfeel/kcm.h
+++ b/kcms/lookandfeel/kcm.h
@@ -51,6 +51,7 @@
     enum Roles {
         PluginNameRole = Qt::UserRole +1,
         ScreenhotRole,
+        FullScreenPreviewRole,
         HasSplashRole,
         HasLockScreenRole,
         HasRunCommandRole,
diff --git a/kcms/lookandfeel/kcm.cpp b/kcms/lookandfeel/kcm.cpp
--- a/kcms/lookandfeel/kcm.cpp
+++ b/kcms/lookandfeel/kcm.cpp
@@ -85,6 +85,7 @@
     QHash<int, QByteArray> roles = m_model->roleNames();
     roles[PluginNameRole] = "pluginName";
     roles[ScreenhotRole] = "screenshot";
+    roles[FullScreenPreviewRole] = "fullScreenPreview";
     roles[HasSplashRole] = "hasSplash";
     roles[HasLockScreenRole] = "hasLockScreen";
     roles[HasRunCommandRole] = "hasRunCommand";
@@ -186,7 +187,8 @@
         }
         QStandardItem* row = new QStandardItem(pkg.metadata().name());
         row->setData(pkg.metadata().pluginName(), PluginNameRole);
-        row->setData(pkg.filePath("previews", QStringLiteral("preview.png")), ScreenhotRole);
+        row->setData(pkg.filePath("preview"), ScreenhotRole);
+        row->setData(pkg.filePath("fullscreenpreview"), FullScreenPreviewRole);
 
         //What the package provides
         row->setData(!pkg.filePath("splashmainscript").isEmpty(), HasSplashRole);
diff --git a/kcms/lookandfeel/package/contents/ui/main.qml b/kcms/lookandfeel/package/contents/ui/main.qml
--- a/kcms/lookandfeel/package/contents/ui/main.qml
+++ b/kcms/lookandfeel/package/contents/ui/main.qml
@@ -18,6 +18,7 @@
 
 import QtQuick 2.1
 import QtQuick.Layouts 1.1
+import QtQuick.Window 2.2
 import QtQuick.Controls 1.0 as QtControls
 import org.kde.kquickcontrolsaddons 2.0
 import QtQuick.Controls.Private 1.0
@@ -141,6 +142,28 @@
                                     Tooltip.showText(parent, Qt.point(parent.mouseX, parent.mouseY), model.display);
                                 }
                             }
+                            PlasmaComponents.ToolButton {
+                                anchors {
+                                    top: parent.top
+                                    right: parent.right
+                                    margins: units.smallSpacing
+                                }
+                                visible: model.fullScreenPreview != ""
+                                iconSource: "media-playback-start"
+                                tooltip: i18n("Test Splashscreen")
+                                flat: false
+                                onClicked: {
+                                    previewWindow.url = model.fullScreenPreview;
+                                    previewWindow.showFullScreen();
+                                }
+                                opacity: parent.containsMouse ? 1 : 0
+                                Behavior on opacity {
+                                    PropertyAnimation {
+                                        duration: units.longDuration
+                                        easing.type: Easing.OutQuad
+                                    }
+                                }
+                            }
                         }
                     }
                 }
@@ -188,4 +211,29 @@
             }
         }
     }
+
+    Window {
+        id: previewWindow
+        property alias url: previewImage.source
+        color: Qt.rgba(0, 0, 0, 0.7)
+        MouseArea {
+            anchors.fill: parent
+            Image {
+                id: previewImage
+                anchors.centerIn: parent
+                fillMode: Image.PreserveAspectFit
+                width: Math.min(parent.width, sourceSize.width)
+                height: Math.min(parent.height, sourceSize.height)
+            }
+            onClicked: previewWindow.visible = false;
+            QtControls.ToolButton {
+                anchors {
+                    top: parent.top
+                    right: parent.right
+                }
+                iconName: "window-close"
+                onClicked: previewWindow.visible = false;
+            }
+        }
+    }
 }