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HomeFormats.QGSID

What is a .QGS file?

QGS is a QGIS project file, holding a map’s layers and styling. Created by QGIS.

Did you know
  • QGIS is the leading free, open-source desktop GIS.
  • A QGS file is plain XML describing a map’s layers, symbology and settings rather than the geographic data itself, which stays in separate source files.
  • QGS was QGIS’s default project format until version 3.2, when the zipped QGZ variant took over as the standard.
What Analyser reads
Identify and read more GIS and mapping files: OpenStreetMap o5m/o5c binaries, Esri layer files (.lyrx ArcGIS Pro CIM JSON, .lyr ArcMap), QGIS projects (.qgs/.qgz - version, CRS, layer list), shapefile spatial indexes (.sbn/.sbx), GMT/GDAL colour palettes (.cpt) and ENVI band-interleaved rasters (.bil/.bip/.bsq).
Depth of analysis
.QGS 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 .QGS file
Drag a .QGS 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.
Related formats
.O5M · .O5C · .LYR · .LYRX · .QGZ · .SBN · .SBX · .CPT · .BIL · .BIP · .BSQ. See all supported file types.