System File Type – prj

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System File Type

prj

Geospatial
Windows Explorer icon for the prj file type in OneDrive folders

Overview

A coordinate-system definition companion file, commonly used with a shapefile.

Characteristics

Plain text, typically Well-Known Text, identifying the spatial reference used to interpret coordinates.

Common Uses

Ensuring GIS layers align correctly, documenting projection, and supporting coordinate transformations.

Compatible Programs

  • ArcGIS Pro
  • QGIS
  • GDAL

Sources

prj Available by Year Taken/Created

prj — Live from Microsoft

Secure, read-only view focused directly on the prj file-type folder.