Export a Map to GeoJSON
MapGridder exports everything on your map to a GeoJSON file, so waypoints, routes, measurements, shapes, symbols, radius rings, and grid lines all become standard features in one FeatureCollection. GeoJSON is an open standard that almost every mapping and GIS tool can read, and the whole export runs in your browser, so your data is never uploaded to a server. The trip works both ways: a GeoJSON file drops back onto the map, and anything MapGridder exported returns to the layer it came from.
What you can do
- Export waypoints, routes, and measurements as GeoJSON features
- Include shapes, symbols, radius rings, and grid lines
- Standard FeatureCollection that opens in common GIS tools
- Import GeoJSON back onto the map, exported or from another tool
- Runs in your browser, nothing uploaded to a server
Frequently asked questions
How do I export a map to GeoJSON?
Open the map, choose Export from the File menu, set the format to GeoJSON, pick which layers to include, and download the file.
What is GeoJSON?
GeoJSON is an open standard for encoding geographic data (points, lines, and polygons) as JSON. It is widely supported, so most mapping and GIS tools can open a GeoJSON file directly.
What gets included in the GeoJSON file?
Waypoints, routes, distance measurements, shapes, text labels, tactical and topographic symbols, radius rings, and the custom metric grid lines. Each feature keeps properties like name, color, and size.
Can I choose which layers to export?
Yes. The export dialog lets you toggle measurements, shapes, symbols, radius rings, and the grid before you download.
Are my files uploaded to a server?
No. The GeoJSON is built on your device, so your data never leaves your browser.
What can I open a GeoJSON file with?
Most mapping and GIS applications read GeoJSON, and you can also load it into many web maps and code libraries. It is a plain-text JSON file, so it is easy to inspect or process.
Can I import a GeoJSON file too?
Yes. Choose Import from the File menu and pick a .geojson or .json file, up to 5 MB. A file MapGridder exported returns to the layers it came from, and a file from another tool is placed by geometry: points become waypoints, lines become routes, and polygons become shapes. Coordinates must be WGS84 longitude and latitude, the only system the format allows.
Is the GeoJSON export free?
Yes. Export runs in your browser with nothing uploaded, and it does need a quick, free sign-in. Personal and non-commercial use is free; commercial use needs a paid license.
Related: GPX and KML guide · GPX editor online · KML viewer · What is GeoJSON? · Export a map to GeoJSON guide