How to Create and Download Garmin Custom Maps - HikingGuy.com
GitHub - NINAnor/GarminCustomMaps: The GarminCustomMap plugin exports the current map canvas to a .kmz-file, which is compatible with Garmin`s Custom Maps format for handheld GPS units. That way individual maps styled in
Custom GPS Map Development
How to import custom maps to Garmin GPS – MapTiler Support