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Geojson Validator

Validate bounded GeoJSON geometry structure and WGS84 coordinate positions locally.

GeoJSON structureValid · FeatureCollection
Features1
Geometries1
Coordinate positions1
Position orderLongitude, latitude

Structure and coordinate values were checked locally. Save a report for a compact record of this validation.

Core Geometry, Feature and FeatureCollection objects only; 500,000 character limit.
Processed on your device

How it works & useful details

How it works & limits

Checks the core GeoJSON geometry types, finite WGS84 longitude/latitude positions and polygon ring closure. Parsing is local and inert; no linked data, URLs, maps or extensions are loaded.

Limit: 500,000 characters, 1,000 features, 20,000 positions and 24 nested geometry levels. It is a structural checker, not full schema certification.

Private local calculation

Coordinates and pasted data stay in this browser tab. These tools use no map tiles, geocoding, routing, elevation data or network requests.