GeoJSON
GeoJSON is a standard format for representing geographic data structures like points, lines, and polygons using JSON.
GeoJSON is a way to describe geographic information, like locations, routes, or boundaries, in a text format that computers can easily read and share. It's built on JSON, a common language for data exchange on the web.
Think of it like a digital map description. Instead of a picture, GeoJSON uses text to define specific points (like a city), lines (like a road or a running path), or areas (like a park). This makes it easy for software to understand and use this location data.
GeoJSON is a geospatial data interchange format based on the JavaScript Object Notation (JSON) standard. It encodes geographic features such as points, lines, and polygons, along with their properties, into a structured JSON format. The specification defines a common set of data types and structures for representing geographic information, facilitating interoperability between different systems and applications dealing with spatial data.
Its widespread adoption makes it a de facto standard for web-based mapping and GIS applications. The format is human-readable and easily parsed by machines, making it suitable for data exchange between web services, databases, and client-side applications.
GeoJSON is appearing because AI models are increasingly used to process and generate geographic data. This allows for applications like creating custom maps and routes directly from natural language prompts, integrating AI with geospatial tools.
- Generating running routes with GPT-6 Astra and ChatGPT WorkOpenAI · Simon Willison ·
- OpenAI ChatGPT
- OpenAI's ChatGPT can generate custom running routes, likely using GeoJSON to represent the map data and route information.
- GPX
- GPX (GPS Exchange Format) is another XML-based file format for GPS data, of
- KML
- KML (Keyhole Markup Language) is an XML-based format for geographic data, p
- Shapefile
- Shapefiles are a popular geospatial vector data format, but they are
GeoJSON was developed by the community and formalized through an Internet-Draft, with its initial specification published in 2008. It has since been updated and is maintained as an open standard. Source ↗
Use an online GeoJSON viewer or editor. You can find many by searching for 'online GeoJSON viewer'. Paste a simple GeoJSON snippet representing a point or a line, and the tool will display it on a map, showing how the text translates to a visual representation.
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Questions people ask
- What kind of geographic data can GeoJSON represent?
- GeoJSON can represent various geographic features, including points (like a single location), lines (like a road or river), polygons (like a country or park), and collections of these features, along with associated properties.
- Is GeoJSON easy to read?
- Yes, GeoJSON is based on JSON, which is a human-readable text format. This makes it relatively easy for people to understand and for computers to parse.
First seen on Subvolts Sep 12, 2026. Updated Sep 19, 2026. Written by an AI model from the items above and reviewed against them weekly; report an error.