GeoJSON viewer

Drop a GeoJSON file on the page, or paste it, and see it drawn on the map. Click a feature for its properties; export it as KML, GPX or CSV.

How to use it

  1. Drop the GeoJSON file on the panel, choose it, or paste its text and press Load pasted text.
  2. Click a feature on the map for its properties, or click a row in the table to go to it.
  3. Export as KML, GPX or CSV, or PNG for a picture.

5 practical uses

  1. Check a GeoJSON file from a download, an API or a GIS export.
  2. Read the properties of features without writing code.
  3. Convert GeoJSON to KML for Google Earth or GPX for a GPS.
  4. Check the bounds, the length and the area of the data.
  5. Share a picture of the data as a PNG.

The maths behind it

GeoJSON is parsed as JSON and normalised to a FeatureCollection. Lengths are the sum of haversine distances along each line; areas are geodesic areas on the ellipsoid; the bounds are the extreme coordinates. Conversion to KML and GPX rewrites the same coordinates as XML; CSV takes the centroid of lines and polygons.

About GeoJSON

GeoJSON (RFC 7946) is the plain-text format of web maps: a JSON object with a geometry in longitude-latitude order on WGS84 and any properties you like. It is what this site's other tools export. The converter turns it into KML or GPX and back.

More tools

Map makersPin map makerDrop pins with labels, colour them, and export the map as an image or a file. Map makersMap drawerDraw points, lines and shapes on the map, then save them as GeoJSON, KML or an image. Map makersLegend makerBuild a map legend with your own colours and labels, and download it as an image. Map makersRegion painterClick countries or US states to colour them, for a visited map or any other. Where am IWhat ZIP code am I in?Find the ZIP or postal code at your location, with the ZIP codes next to it. Measure and routeDrive time mapSee how far you can drive, cycle or walk from a point in 10, 15, 30 or 60 minutes. LookupsNearest national parkThe closest of the 63 US national parks to any point, and the ones after it. Sun, moon, elevation and timeSunrise and sunsetSunrise, sunset, dawn, dusk and day length for any place and date. Waymorphic MapAll 64 toolsWhere am I, measuring, coordinates, map makers, lookups, sun and moon, the lines of the globe.

Questions and answers

What is GeoJSON?

A plain-text format for map data: points, lines and polygons in longitude-latitude order with any properties. It is what web maps and most GIS tools read and write.

Why are my colours not shown?

The viewer reads color, stroke, fill and marker-color properties. Other styling conventions are ignored and features are drawn in blue.

Can it open TopoJSON?

Yes. A TopoJSON topology is converted to GeoJSON when loaded.

Embed this tool on your website

Paste this code where the tool should appear. It shows the tool alone, without this page's text, and links back here. It is free to use; the map data credit stays on the map.

<iframe src="https://waymorphic.com/tools/geojson-viewer?embed=1" width="100%" height="760" style="border:0;border-radius:12px;max-width:100%" loading="lazy" allow="geolocation; fullscreen; clipboard-write" title="GeoJSON viewer – Waymorphic Map"></iframe>

Change height to suit your page. To open the tool with a place already set, add the settings from this page's address bar (the part after #) to the end of the src. The embedded tool asks the visitor's browser for their location only when they press the button, and the allow attribute lets that work inside the frame.