Random Location Generator

Picking latitude and longitude as plain random numbers is a common mistake: equal steps of latitude near the poles cover much less ground than near the equator, so points crowd towards the poles. Wolfram MathWorld's 'Sphere Point Picking' gives the correct method: choose longitude uniformly and set latitude to the arcsine of a uniform number between -1 and 1. Every square kilometre is then equally likely. The same idea gives uniform points inside a latitude/longitude box and inside a circle (a spherical cap) around a centre.

The random numbers come from your browser's Web Crypto API rather than a simple pseudo-random function. With 'Skip open sea' on, candidate points are sent to the Open-Meteo Elevation API and any point where the Copernicus DEM records exactly 0 m is replaced with a new one; up to five names of nearby places are looked up with Photon (OpenStreetMap).

Limits: the sea filter is approximate — some coasts and lakes also read 0 m, and lakes above sea level are not skipped. A random point may land on private property, in a restricted area or somewhere dangerous; the page gives coordinates only, not permission or a safe route to get there.