GeoJSON Viewer Tool
Why professionals choose this GeoJSON viewer
Private, browser-based parsing
Process GeoJSON locally in your browser so sensitive spatial data never leaves your device.
Instant geographic insights
Visualize FeatureCollection, Feature, and Geometry objects with styling optimized for clarity and quick QA.
Developer-friendly workflow
Validate coordinates and properties before shipping to production maps or spatial databases.
What is GeoJSON?
GeoJSON is a lightweight format for encoding geographic features using JSON. It is ideal for web mapping because it is both human readable and easy for applications to parse.
Because GeoJSON follows common web standards, it integrates smoothly with libraries like Leaflet, Mapbox GL JS, deck.gl, and kepler.gl.
FeatureCollection
A container for multiple features, often used to represent a layer or dataset.
Feature
Pairs a geometry with descriptive properties, such as names, IDs, or metadata.
Geometry types
Points, LineStrings, Polygons, and their multi-part versions capture coordinates for locations, routes, and areas.
How to use the GeoJSON viewer
- 1
Load GeoJSON data
Drag and drop a .geojson or .json file, or click the upload area to select one from your computer.
- 2
Inspect the map and attributes
Pan and zoom to explore features. Click on a feature to review its properties and ensure attributes render correctly.
- 3
Validate and export
Confirm geometry accuracy, then download the file or copy the JSON for your mapping workflow.
Make the most of your GeoJSON files
Prepare clean coordinates
Ensure your longitude and latitude values are in the correct order and use the WGS84 reference system for web maps.
Simplify complex shapes
Large polygons can slow down client-side rendering. Simplify geometries before sharing interactive maps.
Document feature properties
Consistent property names and metadata improve collaboration between GIS specialists, analysts, and developers.
GeoJSON viewer FAQs
What files does the viewer support?
You can open standard GeoJSON FeatureCollection, single Feature files, and Geometry objects saved as .geojson or .json.
Is my data sent to a server?
No. All parsing and rendering happen locally in your browser, so your spatial data stays private.
Can I use the viewer for validation?
Yes. The map instantly surfaces geometry issues, invalid coordinates, or missing properties so you can fix them before deployment.
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