GeoJSON is a geospatial data interchange format based on JavaScript Object Notation (JSON). It was published at http://geojson.org in 2008. It has succeeded in streamlining geographic information system standards and making them accessible to practitioners of modern web development. GeoJSON today plays an important role in many spatial databases, web APIs, and open data platforms.

This WG will work on a GeoJSON Format RFC that specifies the format more precisely and serves as a better guide for implementers. The work will start from an Internet-Draft written by the original authors. This I-D, draft-butler-geojson-04, substantially improves the format specification. The remaining tasks of the WG are:

* Further clarification of the GeoJSON format specification.
* Addition of implementation advice based on lessons learned since 2008.
* geoAddition of more explicit extension advice to the specification.

The addition of new features to the GeoJSON format is not within the scope of this WG. One possible exception to this (depending on WG consensus) is the adoption of JSON Text Sequences as an alternative way of serializing sets of GeoJSON objects.