A simple method to help indoor mappers to convert DXF or DWG/AUTOCAD files to simple GeoJSON to display your indoor map. Floor plans are mostly in DWG files and are not geo-referenced. To achieve geo-referencing in AUTOCAD we have to use coordinate reference systems (CRS).
AutoCAD QGIS
In Mac
Preferences-> `` Import your DXF/DWG file, select or group.