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Runs locally in your browser
GeoJSON Validator
Check a GeoJSON FeatureCollection for invalid roots, coordinates, and polygon rings.
Check common RFC 7946 structural problems: root type, coordinates, and polygon ring closure. This is not a full GIS topology suite.
See also: formats & limits · accuracy · privacy
Input
Result
How it works
- Paste or choose a GeoJSON file.
- Review errors and warnings with their paths.
- Open valid data in the editor.
Current limitations
- This checks common RFC 7946 structural and coordinate problems.
- It does not replace topology validation in a full GIS.
Examples
Issue list
Each issue includes a JSON path, severity, and whether the companion fixer can address it.
Tips
- Warnings for out-of-range lon/lat do not auto-reproject.
- Use desktop topology tools for parcel fabric or coverage validation.
