IDK if this is going to help you, but here is BrowserTest. It opens the given URL in a as-simple-as-possible WebView. Created using QtSDK with QtQuick app wizard. Basically it's nothing more than QML viewer with a simple QML. After installation you can find that QML in /opt/BrowserTest/qml/BrowserTest/MainPage.qml, where you can edit it at will to fiddle with the webview.