GeoJSON inspector
Geo data
The GeoJSON is read on your device only. Neither map tiles nor URLs inside properties are fetched.
Choose a .geojson or .json file, or drop it here.
A FeatureCollection, a Feature or a bare geometry all work.
Comma separated zero-based integers. Leave empty to export every feature.
Result
Load GeoJSON to see the result here.
How to use
Load the GeoJSON
Pick a .geojson file or paste the text. A FeatureCollection, a Feature or a bare geometry all work.
Check the shapes and findings
Look at the outlines on the lon/lat grid, the computed bbox and the coordinate and structure findings. Out-of-range positions and unclosed rings are errors; antimeridian crossings and the legacy crs member are warnings.
Export only the features you need
List zero-based numbers separated by commas and save them as a FeatureCollection. Attributes are kept and the original file is untouched.
Scope of the result
Up to 16,777,216 UTF-16 code units, 250,000 nodes, depth 96, 20,000 features, 200,000 positions, GeometryCollection depth 32 and 1,000 findings. The preview draws at most 2,000 shapes. It does not reproject, measure distance or area, verify topology such as self-intersection or hole containment, or repair data. The legacy crs member is not interpreted.
Frequently asked questions
- Why is there no basemap?
- Because it would require fetching map tiles. The distribution and outline of the coordinates are shown on a longitude/latitude grid instead.
- Can it measure distance or area?
- No. The preview is a plain lon/lat plane, so on-screen lengths and areas are not real-world measurements.
- Does it fix swapped latitude and longitude?
- No. Out-of-range values are reported, but a swap where both values stay in range cannot be detected. Check the source specification.
- Does passing the checks mean the GeoJSON is valid?
- It means it passed the structure and coordinate checks implemented here. Conditions such as self-intersection and polygon holes are out of scope.
- Do feature numbers start at 1?
- They start at 0. Features are exported in the order given and repeated numbers are collapsed into one. Attributes are preserved.
- Are URLs inside properties fetched?
- No. A URL is only displayed as text; images, maps and link targets are never loaded.