all map tiles are downloaded from https://odditown.com/haven/map/;

every png-tile is converted to a bitmap using YAPD, because canvas gives different results for different browsers;

Locality Sensitive Hash TLSH is used for fuzzy matching tiles;

when user drag-n-drops a tile, it is converted to a bitmap and matched against generated hash database to show coordinates of this tile on a global map.

you spawned in the wild and wanna know your coordinates on a global map;

turn on "save to disk" tiles in your client and drag-n-drop a tile (or few) from current game-session to the "Drop files here" zone;

press Search button to download ~9Mb hashes (2.8Mb gzipped) and match your tile hash against them;

results with difference < 100 are saved and are filtered by slider value (10 by default).