Operations
13 projects
CoGranA command-line tool for combining geospatial data across different spatial units using five statistical methods.
geojson-js-utilsJavaScript helper functions for manipulating and analyzing GeoJSON data, including spatial calculations and geometric operations.
geojson-mergeA Node.js utility to merge multiple GeoJSON files into a single FeatureCollection, supporting both in-memory and streaming modes.
geojson-randomA Node.js and browser library for generating random GeoJSON features like points, polygons, and linestrings.
geojson-rewindA JavaScript library to enforce correct polygon ring winding order in GeoJSON data for specification compliance.
simplify-geojsonApply Ramer-Douglas-Peucker line simplification to GeoJSON features or collections in JavaScript or via CLI.
Turf.jsA modular JavaScript and TypeScript library for geospatial analysis and GeoJSON manipulation.
turf_dartA pure Dart geospatial analysis library for working with GeoJSON data, inspired by Turf.js.
winnowApply SQL queries and spatial filters to GeoJSON data in memory, with support for streams and Esri format conversion.
geojson-polygon-labelsA CLI tool that generates point labels from GeoJSON polygons using various placement algorithms.
geojson-shaveA command-line tool that reduces GeoJSON file size by trimming coordinate precision, removing whitespace, and optionally stripping properties.
Editors & viewers
13 projects
gjvA command-line tool for viewing GeoJSON files with an interactive map interface.
Validation
6 projectsgeojsonhintA complete, fast, standards-based validation tool for GeoJSON data.
check-geojsonA parser and validator for GeoJSON strings that checks semantics and provides character-level warnings.
gjfA Python tool to fix invalid GeoJSON objects and files via CLI or library.
antimeridianA Python library that fixes GeoJSON geometries crossing the 180th meridian (antimeridian) by splitting them into valid shapes.
geojson-pydanticPydantic models for creating and validating GeoJSON data according to the RFC 7946 specification.
Services
6 projectsgeojsonio-cliA CLI tool to send GeoJSON files to geojson.io for instant visualization and editing.
featureserverAn open-source Node.js implementation of the ArcGIS GeoServices REST API specification for serving geographic data.
Conversion
19 projectscsv2geojsonConvert CSV and TSV files into GeoJSON format for mapping applications.
geojson-vtA JavaScript library for slicing GeoJSON data into vector tiles on the fly in the browser or Node.js.
togeojsonA dependency-free JavaScript library for converting KML, GPX, and TCX files to GeoJSON format.
tokmlConvert GeoJSON objects to KML (Keyhole Markup Language) strings for geographic data interchange.
topoJSONAn extension of GeoJSON that encodes topology for efficient, compact geographic data representation.
wellknownA lightweight JavaScript library for parsing Well-Known Text (WKT) into GeoJSON and stringifying GeoJSON back to WKT.
esri2openAn ESRI ArcGIS toolbox and Python script to export ESRI Feature Classes to open data formats like CSV, JSON, GeoJSON, and SQLite.
superclusterA very fast JavaScript library for geospatial point clustering for browsers and Node.js.
geojson2svgA JavaScript library that converts GeoJSON data to SVG strings for mapping, supporting both client-side and server-side usage.
svg-to-geojsonConvert SVG files to GeoJSON format through a web interface with drag-and-drop functionality.
osmtogeojsonA stable and fast converter that transforms OpenStreetMap (OSM) data into GeoJSON format with proper polygon detection.
osm2geojsonA Python library for converting OpenStreetMap and Overpass API XML/JSON data into GeoJSON format.
osm-and-geojsonA lightweight JavaScript library for converting between OpenStreetMap XML and GeoJSON formats.
query-overpassA Node.js CLI tool and library to query OpenStreetMap's Overpass API and output results as GeoJSON.
topojson for PythonA Python library for encoding spatial data into the TopoJSON format, reducing file sizes through topology computation and simplification.
geometA pure-Python library for converting between common geospatial data formats like GeoJSON, WKT/WKB, and GeoPackage Binary.