awesome geojson

GeoJSON utilities that will make your life easier.

<a href='https://www.placemark.io/'><i><img src='.github/placemark.png' width='16' alt='Placemark' height='16' /> Sponsored by Placemark, a collaborative editor for maps with great support for GeoJSON</i></a>

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.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

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)

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

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.