FAQ

Plot coordinates on an open map — quick answers about privacy, fairness, and limits.

Using the tool

Does every action leave my browser?

No. Manual coordinates, CSV plotting, distance math, CSV export, and share-link encoding are client-side. Only place search and optional reverse-geocoding call Nominatim (OpenStreetMap).

What CSV format works?

Headers like latitude/longitude or lat/lng/lon (comma or tab). Or headerless rows of lat,lng. Optional name/label column becomes the marker label.

Is distance driving distance?

No — it is straight-line (great-circle / haversine) distance between two plotted markers.

Are my coordinates stored on a server?

No. We do not store coordinates server-side. LocalStorage keeps your last marker set on this device; share links put data only in the URL hash.