GIS Blog
Practical, technically honest writing on GIS file formats, conversions, coordinate systems, and the open-source mapping stack. Every article is hand-written from working GIS practice.
How to Export PostGIS Data to GeoJSON: 4 Methods Compared
PostGIS is where serious spatial data lives; GeoJSON is where the web reads it. Four reliable bridges, with code examples and the trade-offs spelled out.
How to Convert KML to GeoJSON: QGIS, ogr2ogr, and Browser Tools
KML is everywhere Google Earth has been; GeoJSON is what every web map reads natively. Three reliable conversion paths, and the things that quietly drop on the way.
How to Export PostGIS Data to GeoJSON: 4 Methods Compared
PostGIS is where serious spatial data lives. GeoJSON is where the web reads it. Four reliable ways to bridge them, with the trade-offs spelled out.
How to Convert Shapefile to GeoJSON: Complete Guide
A working guide to Shapefile-to-GeoJSON conversion using QGIS, the GDAL command line, and a browser. Includes the encoding and CRS pitfalls that bite first-time users.
How to Convert KML to GeoJSON: QGIS, ogr2ogr, and Online Tools
KML is the Google Earth export everyone has and GeoJSON is the web map everyone uses. Three reliable ways to bridge them — and what gets quietly dropped on the way.