Aska Atlas reads the game's own save files and draws the coastline and terrain, every fir, birch, berry bush, mushroom, flax plant, stone pile and jotun-blood rock by name, the Wulfar dens, Draugar fields, Stone Jotun arena and wight spire, your buildings and villagers, and the other islands of the archipelago, using the icons the game itself puts on its map. Nothing is uploaded; parsing happens in this browser tab.
Saves live in %USERPROFILE%\AppData\LocalLow\Sand Sailor Studio\Aska\data (a copy of that data folder works just as well). Pick the data folder to browse every save, or one savegame_… folder.
H settlement, F island, W world, G grid, +/− zoom, arrows pan.