GeoJSON Validator — Check Geospatial RFC 7946 Compliance and Geometry Errors
Validate GeoJSON feature collections and geometry objects against RFC 7946. Paste your GeoJSON to check geometry types, coordinate order, closed polygon rings, and required fields — with exact error paths and fix suggestions. 100% client-side and free.
How to Use GeoJSON Validator — Check Geospatial RFC 7946 Compliance and Geometry Errors
How to Use the GeoJSON Validator
Step 1: Paste Your GeoJSON
Paste a GeoJSON object into the input field. This can be a FeatureCollection, a single Feature, or a raw geometry object (Point, Polygon, etc.).
Step 2: Review the Validation Result
The tool checks your GeoJSON against RFC 7946 and reports:
- Structural errors — missing
type,geometry,properties, orcoordinatesfields - Geometry type errors — unrecognized geometry type names
- Coordinate errors — longitude out of
[-180, 180], latitude out of[-90, 90], or non-numeric values - Coordinate order — the most common GeoJSON mistake is swapping latitude and longitude. GeoJSON always uses
[longitude, latitude] - Unclosed rings —
PolygonandMultiPolygonrings must start and end with the same position - bbox validation — the optional
bboxfield must contain 4 or 6 numbers
Step 3: Fix Issues
Each issue shows:
- Path — the exact location in your JSON (e.g.
$.features[0].geometry.coordinates[0]) - Message — what is wrong
- Suggestion — how to fix it
Step 4: Copy the Report
Click Copy Report to copy a plain-text list of all issues for sharing with your team or pasting into an issue tracker.
Common Mistakes This Tool Catches
| Mistake | Example | Fix |
|---|---|---|
| Swapped coordinates | [37.77, -122.41] | Use [-122.41, 37.77] (lon, lat) |
| Unclosed polygon ring | Ring with 4 different points | First and last position must match |
| Missing geometry field | {"type": "Feature", "properties": {}} | Add "geometry": null or a valid geometry |
| Invalid geometry type | "type": "point" (lowercase) | Use exact casing: "Point" |
Frequently Asked Questions
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