What is a .PGW file?
PGW is a world file that georeferences a PNG image, placing it on the map.
- Did you know
- A world file pairs with an image to tell GIS software where on Earth it belongs.
- PGW follows ESRI’s world-file naming trick, taking a PNG’s first and last letters plus a “w”.
- The six numbers in a world file set scale, rotation and origin, but say nothing about which map projection applies.
- What Analyser reads
- Inspect geospatial and GIS files without a map: TopoJSON, OpenStreetMap XML, Esri Shapefile siblings (SHP/SHX/DBF/PRJ/CPG), world files, GML, NMEA GPS logs, IGC flight logs, MapInfo TAB/MIF, GDAL VRT, PMTiles, DTED terrain, Esri ASCII grids and SRTM .hgt - surfacing CRS/EPSG, feature/record counts, bounding boxes and elevation ranges. GRIB/NetCDF/GeoPackage/MBTiles/MrSID/ECW identified.
- Depth of analysis
- .PGW is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .PGW file
- Drag a .PGW file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.