Many friends often leave messages on the MalaGIS website asking if there are free DEM data download resources. While other users have shared numerous posts on this topic—covering data sources like SRTM, ASTER GDEM, ALOS, and Copernicus DEM—these are relatively professional datasets typically manageable only by GIS practitioners. So, are there tools suitable for beginners or the general public? For instance, a tool that allows online viewing of a region's terrain with 3D rendering effects without the need to download professional GIS or 3D software? Recently, I discovered a small tool called WorldViewR and would like to share it with you.