VN-Geojson Download GADM data https://gadm.org/download_country_v3.html KMZ to JSON Converter https://products.aspose.app/gis/conversion/kmz-to-json KMZ Viewer Online http://kmlviewer.nsspot.net JSON Formater https://jsonbeautifier.org/ GeoJSON Viewer Online https://geojson.tools/ GeoJSON Editor Online https://tomscholz.github.io/geojson-editor/ TopoJSON Viewer/Convert Online https://mapshaper.org/ Paracel Islands (Hoàng Sa): https://gist.githubusercontent.com/tandat2209/5eb797fc2bcc1c8b6d71271353a40ab4/raw/ca883f00b7843afeb7b6ad73ec4370ab514a8a90/gadm36_XPI_0.json Spratly Islands (Trường Sa): https://gist.githubusercontent.com/tandat2209/5eb797fc2bcc1c8b6d71271353a40ab4/raw/ca883f00b7843afeb7b6ad73ec4370ab514a8a90/gadm36_XSP_0.json