AV-G07
GeoJSON Editor
Edit GeoJSON as text or on a map, with two-way sync and RFC 7946 validation.
● Runs on your device; nothing is uploadedHow to use it
- Paste GeoJSON into the text box, drop a .geojson file, or click Sample.
- Draw or edit shapes with the map toolbar; the text updates to match.
- Read the Validation panel for errors and warnings with their paths.
- Click Fix rings & winding or Format to tidy the data if needed.
- Click Download .geojson to save the result.
Limits
- Text or file size
- 10 MB
- Editable on the map
- 3,000 features (read-only preview above that)
- Issues listed
- First 200
- JSON nesting depth
- 512 levels
Features
- Two-way sync between the text editor and the map
- RFC 7946 checks: closed rings, winding order, coordinate ranges, crs member
- One-click fix that closes rings and rewinds polygons
- Summary of features, vertices, size, bbox and geometry types
- Drawn polygons are rewound to RFC 7946 order automatically
For AI agents: avtools_geojson_editor
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