Hi.
You can use image (or image and text) as a link.
Put into component folder your image
administrator/components/com_zhyandexmap/assets/lightbox/
administrator/components/com_zhgooglemap/assets/lightbox/
Create this folder while there is no new component version 😉
And call plugin with this image.
{zhgooglemap-lightbox:MMM;Title;Width;Height;Image}
Example
{zhgooglemap-lightbox:2;;800;500;ZhukLogo.png}
See documentation for details