GeoJSON Viewer Online

Open, inspect, and validate GeoJSON features in seconds. Upload a file to explore points, lines, and polygons on an interactive map.

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. 1

    Load GeoJSON data

    Drag and drop a .geojson or .json file, or click the upload area to select one from your computer.

  2. 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. 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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