SizeReporter gives you the size of any component in the browser
By default, component sizes in the browser are not reported back to the server. This extension allows you to get the actual component size in pixels for any component and to listen for size changes.
Install
Framework Support
Vaadin 7.0+
Vaadin 8.0+
Install with
Release notes - Version 0.1.4
Sizes were not reported for elements that were loaded, such as com.vaadin.ui.Image