awesome geojson

GeoJSON utilities that will make your life easier.

Sponsored by Placemark, a collaborative editor for maps with great support for GeoJSON

operations

• CoGran: Resample statistics from one set of GeoJSON polygons to another
• geo_assigner: Copy a property to all intersecting features
• geojson-coords: Extract coordinates from GeoJSON
• geojson-extent: compute the bounding box of geojson features
• geojson-flatten: flatten multi geometries into normal geometries
• geojson-multiply: merge normal geojson features into one multi geometry type feature
• geojson-js-utils: JavaScript helper functions for manipulating GeoJSON
• geojson-merge: Merge multiple GeoJSON files into one FeatureCollection.
• geojson-normalize: normalize any geojson object into a geojson featurecollection
• geojson-pick: remove all but specified properties from features in a geojson featurecollection
• geojson-random: generate random geojson points, lines, and polygons
• geojson-rewind: enforce ring winding order
• rfc7946-to-d3: Converts polygon winding order between rfc7946 and d3 compatible conventions.
• geojson-summary: get a plain-english summary of what's in a geojson file
• point-grouper: group geojson points into containing polygons
• geojson-join: join geojson against json, dbf, and csv files
• simplify-geojson: apply the ramer-douglas-peucker line simplification to geojson features or feature collections in JS or on the CLI
• turf: collection of functions for spatial operations and analysi
• turf_dart: a turf.js port for Dart and Flutter
• de9im: collection of fast functions for spatial javascript operations
• winnow: run sql queries against geojson with javascript
• geojson-id-streaming: Add a unique id to each Feature
• geojson-mesh: extract shared borders of Polygons in a GeoJSON
• geojson-polygon-labels: generate point labels from GeoJSON polygons
• geojsontools: Python tools for manipulating GeoJSON files
• geojson-indoor-tools: Python tools for editing indoor GeoJSON features: adding room heights, building walls and creating doors
• geojson-shave: a Python command-line tool for reducing the size of GeoJSON files.

editors & viewers

• play.placemark.io: web-based editor, supports many filetype imports & exports, operations
• geojson.io: web-based editor, supports many filetype imports & exports, operations, sharing via GitHub
• umap: web-based editor, supports sharing on-site
• geojson formatter: Validate & Analyze Geographic Data Online
• geojson.tools: web-based editor from HERE XYZ
• mapstarter: helps generate svg, images, and code from GeoJSON
• gjv: electron app enables viewing GeoJSON locally and hack on it with turf; works offline
• GeoJSON editor: a modified version of Google's simple geojson editor
• geojson2image: library for generating images from GeoJSON
• dropchop: browser-based GIS based on Turf.js
• Web GIS: tools to view, inspect, and manipulate geospatial data
• img2geojson: digitize images by overlaying on a web map and drawing
• point_ed: click on map to add points, download those as GeoJSON file
• geojson.io-for-vscode: create, edit, and preview GeoJSON data in VSCode, just like geojson.io
• Vector Tile Lab: An interactive sandbox to tune vector tiles

validation

• geojsonhint: find errors in your geojson files
• check-geojson: alternative to geojsonhint
• geojson-validation: many validation functions, plus simple gjv command line tool
• gjf: A tool to fix invalid GeoJSON objects
• Jest-GeoJSON: an extended set of matcher functions for the Jest Javascript unit testing framework tailored to evaluating GeoJSON data
• antimeridian: Fix GeoJSON polygons that cross the antimeridian (Python package)
• geojson-pydantic: Pydantic models for GeoJSON

services

• geojsonio-cli: send geojson features to geojson.io from your command line
• geojsonio-extension: chrome extension for editing github files in geojson.io
• geojsonlint: REST interface for GeoJSON validation
• mapshaper: Simple interface for simplification and conversion of GeoJSON and TopoJSON
• koop: Server with plugins that recast Esri, GitHub, Socrata and other services as GeoJSON endpoints
• featureserver: An open source Esri-Style Feature Server
• geojson minify: Minifier (compressor) to reduce file sizes

conversion

• CSV
  • csv2geojson: convert CSV to geojson
  • geojson2dsv: convert geojson to CSV and TSV
• geojson-mapnikify: Transform GeoJSON objects into Mapnik XML stylesheets with embedded GeoJSON data and simplestyle-spec-derived styles.
• geojson-vt: Slice GeoJSON into vector tiles on the fly in the browser
• vt-geojson: Extract GeoJSON from Mapbox vector tiles
• geojson2rtree: generate a static rtree (using terraformer) from a set of geojson features
• ogr2ogr: convert anything to anything
  • fiona: nice python interface on top of ogr
• shp2json: convert shapefile zip archives to streaming GeoJSON
• togeojson: convert GPX & KML to geojson
• tokml: convert GeoJSON to KML
• topojson: convert GeoJSON to & from TopoJSON, join data from CSV
• wellknown: convert WKT to GeoJSON
• betterknown: convert WKT to GeoJSON (successor to wellknown)
• esri2open converts proprietary Esri formats to GeoJSON
• gtfs2geojson: convert GTFS transit data to GeoJSON
• geoxform: convert any size stream of geojson into a streaming CSV, Shapefile or KML, etc.
• supercluster: A fast GeoJSON clustering library for browsers and Node.
• SVG
  • geojson2svg: Converts GeoJSON to SVG string given SVG view port size and maps extent.
  • geojson-svgify: Convert GeoJSON geometry paths to SVG polyline elements.
  • geojson-to-svg-cli: Command line tool to convert GeoJSON to SVG.
  • svg-to-geojson: Drag and drop SVG on the map and it returns GeoJSON back to you.
• geojson2ndjson: convert GeoJSON to/from newline-delimited GeoJSON
• geobuf: convert GeoJSON to/from GeoBuf
• OpenStreetMap
  • osmtogeojson: convert OpenStreetMap data to GeoJSON
  • osm2geojson: converts OSM XML to GeoJSON
  • osm2geojson: (Python) converts OSM XML and Overpass XML/JSON to GeoJSON
  • minjur: converts OpenStreetMap data to GeoJSON faster than anything else
  • geojsontoosm: convert GeoJSON to OSM XML
  • geojson2osm: convert GeoJSON to OSM XML
  • osm-and-geojson: convert GeoJSON to OSM XML and OSM XML to GeoJSON
  • geojson2osm-es6: convert GeoJSON to OSM XML
  • query-overpass CLI to make Overpass query and transform result to GeoJSON. Based on osmtogeojson
• topojson for Python: Topojson is a library that is capable of creating a topojson encoded format of merely any spatial object in Python.
• geomet: Pure Python conversion library for common geospatial data formats

data

• natural earth: country, province, and geographical data
• geojson.xyz: natural earth data in web-friendly sizes with hotlinking
• world-atlas: customizable simplified versions of natural earth data
• geo-maps: High Quality GeoJSON maps programmatically generated.
• openflights-geojson: openflights airports & airplane routes
• us-atlas: geojson & topojson for United States features
• metro-extracts: regional OpenStreetMap data as GeoJSON
• whereonearth-airport: outlines of every airport
• whereonearth-building: building outlines
• whereonearth repos: other features output from GeoPlanet by Aaron Straup Cope
• tgn-geojson: The Getty Thesaurus of Geographic Names (TGN) As GeoJSON.
• strava-to-geojsonio: export runs & rides from Strava to GeoJSON
• strava-geojson: export all strava data to geojson, in node & on the web
• gimme OSM: Fetch geojson file by openstreetmap id
• country-levels Full planet GeoJSON extracts, based on ISO and FIPS codes.
• historical-basemaps: Collection of georeferenced boundaries of world countries and cultural regions for use in mapping historical data on the world scale.
• 99boundaries: Generate any maritime & land boundary in GeoJSON and other file formats or download directly from the web
• france-geojson: Outlines of regions, departments, arrondissements, cantons and communes of France (mainland and overseas departments) in GeoJSON format
• zg3d: 3D models of existing buildings in the City of Zagreb, Croatia in GeoJSON (CSV and Excel also available).

serialization

• python-geojson: serialize geojson to/from python datatypes
• rgeo-geojson: serialize geojson to/from ruby RGeo datatypes
• rust-geojson: serialize geojson to/from rust datatypes
• geojson-jackson: serialize GeoJSON to and from Java datatypes (based on Jackson)
• mapbox-java: serialize GeoJSON to and from Java datatypes (based on Gson)
• geojson-serializer: serialize Java with annotations as GeoJSON

resources

• RFC 7946 – The GeoJSON Format: the current GeoJSON standard by IETF
• GeoJSON.org: the first specification, defining all the rules for GeoJSON structures
• More than you ever wanted to know about GeoJSON: a review of the concepts behind the specification in a more narrative format.
• geojson-invalid-geometry: List of GeoJSON invalid geometry issues with example files.

License

To the extent possible under law, Tom MacWright has waived all copyright and related or neighboring rights to this work.