I would like to export the layer group created in QGIS into the GIS file extensions as: .kml, .shp, etc.
So far, the "Export" option available for this layer group gives a chance to export as a "Layer Definition File" in .qlr extension only.
I would like to have more options for saving this groupped layer.
Best Answer
A "layer group" is not a single layer. It's multiple separate layers. They are grouped together in the Layer panel for your convenience. But you can't export a Layer Group as a single layer.
You can combine any layers that are the same type of vector data (eg, all polygons) using the tool,
Merge Vector Layers
. The line layer cannot be combined into a single shapefile with the polygon layers. That's a limitation of the shapefile format.The KML format supports multiple data types, however I don't think QGIS can create a KML file with different data types. To combine the three layers into a KML file, you will probably have to use different software (such as Google Earth).
Database-type formats can combine multiple separate layers in a single file. This includes formats such as Geopackage and Spatialite.
Package Layers
.