When you colour a region/country or add a marker, you can set a tooltip to display when you hover it. The tooltip can contain HTML code to format the text or even display images.
In the settings of the plugin you can enable a ‘rich text editor’ for the tooltip field to help you format the tooltip content.
Try the Pro version of the plugin for 7 days.
You’re not sure this is the right plugin for you? Try it out first!