GeoJSON Viewer
Online GeoJSON viewer — upload, paste, or drop a .geojson file to view it on an interactive map
🔒 All processing happens locally in your browser. Your files never leave your device.
What is GeoJSON?
GeoJSON is an open standard format (RFC 7946) for encoding geographic features as JSON. A single GeoJSON file can hold points, lines, polygons, and any attribute data attached to them. Because it is plain UTF-8 text, GeoJSON is easy to inspect, edit, share, and consume directly in web browsers — which is why it has become the lingua franca of web mapping.
Coordinates in GeoJSON are stored as longitude, latitude pairs in WGS 84 (EPSG:4326). The format defines seven geometry types: Point, MultiPoint, LineString, MultiLineString, Polygon, MultiPolygon, and GeometryCollection. Features bundle a geometry with a free-form properties object, and a FeatureCollection wraps many Features together.
Common uses for an online GeoJSON viewer
Validating API output
Quickly check the GeoJSON your backend or third-party API is producing. Catch flipped lat/long, missing properties, or geometry errors at a glance.
Previewing downloaded datasets
When you receive a GeoJSON file from a client, agency, or open-data portal, drop it here to verify the coverage before importing it into QGIS or your own pipeline.
Debugging web maps
Strip a problematic layer out of your Leaflet, Mapbox, or MapLibre app and view it in isolation to find the feature that is rendering incorrectly.
Sharing maps without code
Send colleagues a GeoJSON file plus a link to this viewer — they can see the data without installing anything or knowing GIS.
How to view a GeoJSON file
- Drag your
.geojsonfile onto the viewer above, or click to browse for it. - The features render on an interactive Leaflet-style map. Pan and zoom to explore.
- Click any feature to inspect its properties — every attribute is listed.
- If your file is large, the viewer will only render features in the current viewport for speed.
All processing is client-side. Your file is never uploaded to a server — safe for confidential boundaries, internal datasets, or anything you would not paste into a third-party API.
Supported GeoJSON geometry types
Point
A single longitude/latitude position — rendered as a marker.
MultiPoint
An array of point coordinates rendered as multiple markers.
LineString
A sequence of two or more positions forming a connected line.
MultiLineString
An array of LineStrings — useful for multi-segment trails or pipelines.
Polygon
A closed ring (and optional inner holes) representing an area.
MultiPolygon
An array of polygons — used for countries with island territories.
GeometryCollection
A mix of geometry types in a single feature.
FeatureCollection
The top-level wrapper containing many features in one file.
Frequently Asked Questions
How do I view a GeoJSON file online?
Drag and drop your .geojson file onto the viewer above, or click to browse. The features render on an interactive map instantly — no software install, no signup, and no upload to a server.
What GeoJSON geometry types does this viewer support?
All RFC 7946 geometry types: Point, MultiPoint, LineString, MultiLineString, Polygon, MultiPolygon, GeometryCollection, Feature, and FeatureCollection. Coordinate reference system is assumed to be WGS 84 (EPSG:4326) per the GeoJSON spec.
Is my GeoJSON data uploaded to a server?
No. All parsing and rendering happens in your browser using client-side JavaScript. Your data never leaves your device — safe for sensitive or proprietary datasets.
Can I view large GeoJSON files?
Yes — files of tens of megabytes typically work, though performance depends on your browser and the number of features. If a file is very large, consider running it through our GeoJSON simplifier first to reduce vertex count without losing shape.
Can I view a GeoJSON URL or paste raw GeoJSON text?
Yes. You can paste GeoJSON text directly into the viewer, or load a file from your device. Once loaded you can inspect feature properties and zoom to individual features.
What is a GeoJSON FeatureCollection?
A FeatureCollection is the top-level GeoJSON object containing an array of Feature objects. Each Feature has a geometry and a properties object holding attribute data. This viewer reads FeatureCollections natively and lists every feature it finds.
How do I view GeoJSON without GIS software?
This online viewer replaces the need for QGIS, ArcGIS, or any installed software for quick previews. It is ideal for developers checking API output, analysts validating a download, or anyone receiving GeoJSON who just needs to see the data on a map.
GeoJSON is the native format for web mapping libraries such as Leaflet and Mapbox GL — viewing a GeoJSON file here is a quick way to verify geometry and attributes before using the data in a web map or API.