Map attribution

Maps use GSI tiles by the Geospatial Information Authority of Japan (国土地理院).

• Standard / pale maps and seamless photos: source 国土地理院
• Place search: GSI address search API
• Display addresses: GSI reverse geocoder

Tiles are used under the GSI terms of use. The offline tile cache keeps at most 500 tiles for 7 days on your device and evicts the oldest first.

Libraries: Leaflet (BSD-2-Clause), Supercluster (ISC), Leaflet.heat (BSD-2-Clause). Icons: Material Symbols (Apache-2.0).