Convert GML to KML - Online GIS Converter
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A file with .gml file extension is a Geography Markup Language file . GML is an XML grammar written in XML Schema for the modelling, transport, and storage of geographic information; it provides a variety of kinds of objects for describing geography including features, coordinate reference systems, geometry.
A file with the .KML file extension is a Keyhole Markup Language file. KML files use XML to express geographic annotation and visualization by storing locations, image overlays, video links and modeling information like lines, shapes, 3D images and points