Vector Format Converter

Convert vector GIS files between Shapefile, GeoJSON, KML, GPX, GeoPackage, and CSV with optional CRS transform, precision, field filtering, and bounding box...

Convert between vector GIS formats using only Python standard library.

Supported Formats

Format	Extension	Read	Write
Shapefile	.shp	Yes	Yes
GeoJSON	.geojson/.json	Yes	Yes
KML	.kml	Yes	Yes
GPX	.gpx	Yes	Yes
GeoPackage	.gpkg	Yes	Yes
CSV	.csv	Yes	Yes

Installation

Zero external dependencies. Requires Python 3.8+.

Usage

Convert between formats

bash

python vector-convert.py input.shp --to geojson -o output.geojson
python vector-convert.py input.geojson --to shp -o output.shp
python vector-convert.py input.kml --to gpkg -o output.gpkg

Show file info

bash

python vector-convert.py input.shp --info

CRS transformation

bash

python vector-convert.py input.shp --to geojson --crs EPSG:3857

Coordinate precision

bash

python vector-convert.py input.geojson --to csv --precision 4

Filter fields

bash

python vector-convert.py input.geojson --to csv --fields name,type,population

Clip to bounding box

bash

python vector-convert.py input.shp --to geojson --bbox -180 -90 180 90

Features

• Auto-detect: Input format detected from file extension
• CRS transform: Convert between EPSG codes (4326, 3857, etc.)
• Precision control: Round coordinates to N decimal places
• Field filtering: Keep only specified property fields
• Bbox clipping: Filter features intersecting a bounding box
• Info mode: Display feature count, CRS, bounds, and field names
• Binary parsing: Reads SHP/DBF/SHX/PRJ files manually
• GeoPackage: Reads/writes SQLite-based GPKG format

Testing

bash

pytest tests/ -v

License

MIT-0 (No Attribution)