diff --git a/tools/make_map_tiles.py b/tools/make_map_tiles.py
new file mode 100644
index 0000000..012927a
--- /dev/null
+++ b/tools/make_map_tiles.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+
+# #!/usr/bin/env bash
+# ROMFSDIR='/path/to/totk-romfs'
+# MAPSRC="$ROMFSDIR/UI/Map"
+# TXTMPDIR="txtmp"
+
+# mkdir -p "$TXTMPDIR/sourcetiles"
+# mkdir -p "$TXTMPDIR/pngtiles"
+# ls "$MAPSRC/MainField/" | grep -E '._..-.._00(_T+)?(_A)*\.bntx(\.zs)?' | xargs -I {} cp "$MAPSRC"/MainField/{} "$TXTMPDIR"/sourcetiles
+# # A few dupes get through because grep can't be greedy about the set of emitted lines. We only keep final map states
+# rm -f "$TXTMPDIR"/sourcetiles/G_09-04_00_T.bntx*
+# rm -f "$TXTMPDIR"/sourcetiles/G_10-08_00_T.bntx*
+# rm -f "$TXTMPDIR"/sourcetiles/G_11-05_00_T.bntx*
+# rm -f "$TXTMPDIR"/sourcetiles/G_11-07_00_T.bntx*
+# rm -f "$TXTMPDIR"/sourcetiles/S_05-06_00_T_A.bntx*
+# rm -f "$TXTMPDIR"/sourcetiles/S_09-04_00_T_A.bntx*
+
+# # Expect manual extraction into $TXTMPDIR/pngtiles:
+# # - Use switch toolbox https://github.com/KillzXGaming/Switch-Toolbox
+# # - Tools -> Batch Export Textures (All Supported Formats)
+# # - Go to $TXTMPDIR/sourcetiles, select all bntx, open, select output dir $TXTMPDIR/pngtiles
+# # - Choose png format, uncheck Use Folders, confirm and wait for all 360 files, 142MB bntx.zs -> 1.2GB png
+
+# Drop all suffixes for predictable filenames
+# for f in "$TXTMPDIR"/pngtiles/*.png; do
+#   canon=$(echo "$f" | sed -Ee s/_T+// -e s/\(_A\)+// );
+#   mv -f "$f" "$canon" 2> /dev/null
+# done
+
+
+from PIL import Image
+import os
+Image.MAX_IMAGE_PIXELS = None  # else it screams if we do anything hard...? lol
+TXTMPDIR="txtmp"
+GAME_FILES="../public/game_files"
+
+def stitch_area(area):
+    output = Image.new('RGB', (12*3000,10*3000))
+
+    for x in range(12):
+        xx = str(x).zfill(2)
+        for z in range(10):
+            zz = str(z).zfill(2)
+            pngname = f"{area}_{xx}-{zz}_00.png"
+            pngname = os.path.join(TXTMPDIR, "pngtiles", pngname)
+            print(pngname)
+            with Image.open(pngname) as tile:
+                output.paste(tile, (x*3000, z*3000))
+
+    outfilename = os.path.join(TXTMPDIR, f"{area}_full_map.png")
+    print(f"exporting {outfilename}")
+    output.save(outfilename, "PNG")
+    output.close()
+
+# output ground 351MB, sky 262MB, underground 275MB, 36000px * 30000px each
+stitch_area("G")
+stitch_area("S")
+stitch_area("U")
+
+
+# zoom level max tiles:
+# min 2: https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/2/2/2.webp
+#        https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/3/5/4.webp
+#        https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/4/11/9.webp
+#        https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/5/23/19.webp
+#        https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/6/46/39.webp
+# max 7: https://objmap-totk.zeldamods.org/game_files/map//Sky/maptex/7/93/78.webp
+#
+# 256*xchunk*scalingfactor - xpadding*scalingfactor = 36000
+# 256*ychunk*scalingfactor - ypadding*scalingfactor = 30000
+#
+# px paddings, solve for scale:
+# zoom 2: 18, 143, scale=48
+# zoom 3: 36, 30, scale=24
+# zoom 4: 72, 169, scale=12
+# zoom 5: 144, 120, scale=6
+# zoom 6: 32, 240, scale=3
+# zoom 7: 64, 224, scale=1.5
+
+ZOOM_SCALES = (None, None, 48.0, 24.0, 12.0, 6.0, 3.0, 1.5)
+ZOOMS = (2, 3, 4, 5, 6, 7)
+
+
+AREAMAP = {
+    'G': "Ground",
+    'S': "Sky",
+    'U': "Depths",
+}
+
+for area in "GSU":
+    full_area_map = Image.open(os.path.join(TXTMPDIR, f"{area}_full_map.png"))
+    for zoom in ZOOMS:
+        zs = ZOOM_SCALES[zoom]
+        zoomed_area_map = full_area_map.resize((int(36000/zs), int(30000/zs)))
+        xpad = 256 - zoomed_area_map.size[0] % 256
+        ypad = 256 - zoomed_area_map.size[1] % 256
+        zoomed_output = Image.new('RGBA', (zoomed_area_map.size[0]+xpad, zoomed_area_map.size[1]+ypad))
+        zoomed_output.paste(zoomed_area_map)
+        xtiles, ytiles = int(zoomed_output.size[0]/256), int(zoomed_output.size[1]/256)
+
+        for x in range(xtiles):
+            for y in range(ytiles):
+                path = f"{GAME_FILES}/map/{AREAMAP[area]}/maptex/{zoom}/{x}/{y}.webp"
+                print(f"assembling {path}")
+                os.system(f"mkdir -p $(dirname {path})")
+                left = x*256
+                right = x*256 + 256
+                upper = y*256
+                lower = y*256 + 256
+                outimg = zoomed_output.crop((left, upper, right, lower))
+                outimg.save(path, "WEBP")