View GeoJSON Online — Free Map Preview
Upload any GeoJSON file and Maparz renders it on an interactive map in seconds. Inspect individual features, check geometries, and verify your data — all in the browser. No QGIS, no ArcGIS, no software installation needed.
GeoJSON viewer & converter
About the GeoJSON format
GeoJSON is an open standard geospatial data format based on JSON, defined in RFC 7946. It supports all geometry types (Point, LineString, Polygon, MultiPolygon, etc.) and arbitrary properties per feature. GeoJSON is the preferred format for web mapping because browsers can parse it natively and libraries like Leaflet, Mapbox GL, and D3 consume it directly. GitHub renders GeoJSON files on a map automatically. It uses WGS 84 (EPSG:4326) as its coordinate reference system.
Strengths
- +Native browser support (JSON)
- +Human-readable and editable
- +Single file — easy to share
- +First-class support in web mapping libraries
Limitations
- −Verbose for large datasets
- −Always WGS 84 CRS
- −No built-in topology
Frequently asked questions
Q.Does it support all GeoJSON geometry types?
Yes — Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and GeometryCollection are all rendered correctly on the map.
Q.Can I view large GeoJSON files?
The preview renders up to 500 features for browser performance. Files up to 50 MB are supported. The full dataset is used if you convert to another format.
Q.Do I need to create an account?
No. Upload, view, and convert — entirely free with no signup required. Your file is deleted from the server immediately after processing.
Q.Can I convert to another format after viewing?
Yes. After the map preview loads, select an output format (Shapefile, KML, GeoPackage, GPX, etc.) and click Convert to download the result.