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I once found a great but simple webpage that has a drop down with several text-based GIS formats such as GeoJSON and WKT, and a text box to copy/paste your data. The feature is then drawn on a world map. You can continue to add shapes on the same map.

I've lost this page, and I can't find it. It was super-useful, but I forgot to bookmark it.

So, does anyone know the page, or any page where I can paste WKT and GeoJSON to see them displayed on a map?

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10 Answers 10

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Look at Are there any online WKT editors?

GeoJSON and WKT

GeoJSON

WKT

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  • That first link for OpenLayers is the exact page I was looking for!! Thanks so much - I'm not sure why I couldn't find it.
    – JPhi
    Oct 2, 2014 at 3:07
  • 1
    Love the OSM Playground!
    – Campa
    Jan 7, 2019 at 14:51
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I created this little utility for a co-worker to plot multiple WKT or GeoJSON geometries on a Leaflet map. You can fork it and tailor it to your needs.

http://jsfiddle.net/asnyder14/9dxbcr4f/embedded/result/

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  • 1
    Fantastic tool, thanks! (if'd be great it could accept more than WKT object at once... ;))
    – jjmontes
    Oct 1, 2015 at 22:52
  • Exist a way for know when a point is inside Polygon
    – jose920405
    Mar 10, 2017 at 14:41
  • 1
    @jjmontes Easy enough: jsfiddle.net/eyal0/z4px7g30/12
    – Eyal
    Feb 4, 2021 at 17:14
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WKT visualizer on 3D Earth

https://asapelkin.github.io/wkt_3d_viewer

(repo with examples and readme https://github.com/asapelkin/wkt_3d_viewer)

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In case anyone comes across this question and needs to convert to/from Esri (ArcGIS) json, geoJson, or WKT, I created a small application called geometry-inspector. It is much like the listed applications in the accepted answer, but with the improvement that it supports Esri's json format.

Hope it helps someone!

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Created a WKT <-> GeoJSON converter based on Wicket http://jhnotes.com/wkt/

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GeoJSON Viewer (from URL) gives a simple, quick map from a GeoJSON URL.

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mapshaper worked well for huge GeoJson file but unfortunately it plots on white background instead of map.

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For bash, I use my own script: https://gist.github.com/rajanski/4d2595c1fd4e35c19b4e1a02b4ed579f Pro: Geojson data doesnt leave local machine, good for confidential stuff.

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Github/Gists can handle GeoJSON: https://help.github.com/en/articles/mapping-geojson-files-on-github

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