A Vaadin component which shows a SVG flag of given country. It uses the Flag Icon CSS project. The flags are self-hosted in the add-on jar file, so the flags are not downloaded from some third-party server. No widgetset compilation needed. The jar itself is 2mb in size.
Please specify the country code as a lower-case ISO 3166-1-alpha-2 code; you can browse the country codes here: https://www.iso.org/obp/ui/#search