Documentation
Technical product docs for humans and crawlers: capabilities, limits, privacy data flows, and task tools.
Docs home
Index of technical documentation
How it works
Local processing, convert, validate, repair
Formats & limits
Inputs, outputs, CRS, free vs Pro
Accuracy & edge cases
Repair rules and non-support
Privacy in practice
What stays local vs what is stored
Compare tools
When Mapshaper or desktop GIS is better
Privacy policy
Legal policy
Pricing
Free vs Pro
Task tools
Live converters with how-it-works copy. Each runs locally in the browser unless you open a remote URL or save a cloud project.
- KML to GeoJSON
Convert a KML file or pasted KML into GeoJSON privately in your browser.
- Shapefile to GeoJSON
Open a zipped Shapefile and convert its features to GeoJSON without uploading it.
- CSV to GeoJSON
Turn latitude and longitude columns in a CSV into GeoJSON Point features.
- WKT to GeoJSON
Convert Well-Known Text geometry into a GeoJSON FeatureCollection.
- GeoJSON validator
Check a GeoJSON FeatureCollection for invalid roots, coordinates, and polygon rings.
- GeoJSON fixer
Normalize Features and close unclosed Polygon rings, then download repaired GeoJSON.
- GeoJSON to KML
Convert GeoJSON features into a KML document for Google Earth and other KML tools.