You can override the icon of the tool. This icon is used in the overview, in details views, and hyperlinks. If you leave the icon empty, then the built-in default icon of the registered tool will be used.

Icons are specified using one of the existing Jenkins symbols. Additional icons are available in the ionicons and font-awesome plugins. If none of these icons fit your needs, you can also use a custom icon that can be deployed to the Jenkins userContent directory.