GeoJSON is a format for encoding a variety of geographic data structures.
GeoJSON supports the following geometry types:
objects with additional properties are
Feature objects. Sets of features are
See the full specification for more detail. See also https://datatracker.ietf.org/doc/draft-ietf-geojson/, an Internet-Draft updating and clarifying the original specification.
IETF Geographic JSON Working Group
The Internet Engineering Task Force, in conjunction with the original specification authors, has formed the Geographic JSON WG to standardize the format. Work continues on GitHub at https://github.com/geojson/draft-geojson.