itch.io

Hey, I've been testing this out a bit, and maybe this will help you: If you're using Foundry VTT, make sure when you save your map, you change the hexes in the map creator from "Roll 20" to "Normal" in the dropdown near the top of the screen. This will change the size of the image, so make sure to get the new size in pixels, and then follow the directions Interpoint Station posted above. Worked a charm for me.

If you're still struggling, try leaving the background of the  Foundry scene blank and dropping in the map image as a tile. You can then drag and drop to resize it to the grid (hold Shift so it won't snap to the grid).