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GeoJSON Viewer

Learn what GeoJSON is, what it is used for, and when to convert it into other GIS formats.

Upload or paste your GeoJSON content directly.
All processing runs locally in your browser.

GeoJSON

Upload or paste your GeoJSON content directly.

How to open GeoJSON online

Free online GeoJSON viewer. Visualize and edit GeoJSON files instantly. Upload or paste your GeoJSON content directly.

Privacy

Files are processed on your device in the browser. GeoDataViewer does not upload your datasets to a server for viewing.

Common issues

If a dataset uses multiple required sidecar files, make sure you provide the complete set together. For best results, keep all sidecars in one zip archive when applicable.

Related tools

Measure distances, areas, elevation, and radius circles using the tools menu, then come back to inspect your GeoJSON layer on the map.

What is GeoJSON?

GeoJSON is a JSON-based vector format used to move geographic features between APIs, web maps, scripts, and lightweight desktop workflows.

GeoJSON stores geometry and attributes together in one text document, which makes it easy to inspect, diff, and exchange without special database tooling.
It became the default interchange format for many browser mapping stacks because developers can read it directly and feed it into JavaScript, REST APIs, and data pipelines with very little ceremony.

What is GeoJSON used for?

  • Publishing vector features to web clients, map APIs, and modern frontend frameworks.
  • Moving small to medium sized datasets between ETL scripts, notebooks, and lightweight GIS tools.
  • Debugging geometry and attribute issues because the file is plain text and easy to inspect.

Common use cases

  • Download packages from open data portals and web services.
  • Custom overlays in MapLibre, Leaflet, OpenLayers, and other browser map libraries.
  • Quick QA workflows where analysts need to validate a few features before exporting again.

Strengths

  • Human-readable JSON structure makes review and debugging straightforward.
  • Broad support across web mapping tools, APIs, and programming languages.
  • Single-file distribution is simple compared with multi-file legacy formats.

Limitations

  • Text encoding makes large datasets heavier than binary or tiled alternatives.
  • Classic GeoJSON assumes WGS 84 style web mapping workflows, which is not ideal for every CRS-heavy pipeline.
  • It is not the best long-term storage choice for large transactional datasets or tiled delivery.

File extensions and sidecar files

.geojson
Common extension for a full GeoJSON feature collection or single geometry document.
.json
Generic JSON extension sometimes used for GeoJSON, but it can be ambiguous outside geospatial tooling.

Convert GeoJSON online

GeoJSON Viewer FAQ

When should I choose GeoJSON?

Choose GeoJSON when you need a web-friendly, text-based feature format that is easy to inspect, share, and integrate with browser tooling.

Is GeoJSON good for large production datasets?

It is convenient, but binary containers, databases, or tile archives are usually more efficient when the dataset gets large or needs frequent querying.

Why do teams still convert GeoJSON to other formats?

They usually need better compatibility with legacy GIS software, smaller delivery artifacts, or a storage model that supports multiple layers and richer metadata.