Insights about project management, GIS, and how technology is transforming industries operating in the physical world.
Collect and edit in GeoPackage, publish to the web in GeoJSON, send a Shapefile only when the other side insists. The evidence: the IBGE 27-state mesh converted three ways and measured on eight criteria, from bytes loose and zipped to the .cpg encoding trap, the EPSG code and viewer load time.
You do not need QGIS to open a GeoJSON file. Drop it on a free browser viewer and it draws with its attribute table; nothing uploads. The steps quoted from the live tool, the four things that go wrong (including the silent wrong-place crs case), test files, and when you actually need QGIS.
What GeoJSON is, what RFC 7946 changed, why a file exported in UTM lands in the North Atlantic with no error, the ogr2ogr flags that matter, and the real size of the format measured on the 27 states of Brazil. Every number comes from a dated lab run, not from a spec.