Currently, QField appears unable to load GeoParquet layers packaged from QGIS projects. After syncing a project containing GeoParquet layers, those layers fail to load on the mobile app without diagnostic detail, even though they function correctly in QGIS Desktop.

Adding at least read-only support for GeoParquet would be highly valuable for mobile workflows focused on visualization and situational awareness (e.g. safety maps, transit analysis, environmental context), where editing is not required.

GeoParquet offers several advantages that are especially relevant on mobile devices:

• Efficient columnar storage and fast spatial reads

• Smaller file sizes compared to Shapefile / GeoPackage for large datasets

• Increasing adoption across the geospatial ecosystem (QGIS, GDAL, DuckDB, GeoPandas)

GeoParquet supports both WKB and GeoArrow geometry encodings. Supporting either would be useful, but GeoArrow in particular could enable significant performance and memory improvements on mobile due to zero-copy access patterns.