--- a/tilerswift
+++ b/tilerswift
@@ -21,16 +21,6 @@
     return tiles
 
 
-def parse_tile(tile):
-    lowplane, hiplane = tile[0:8], tile[8:16]
-    rows = []
-    for lowbyte, hibyte in zip(lowplane, hiplane):
-        row = [
-            ((lowbyte >> idx) & 1) + 2*((hibyte >> idx) & 1)
-            for idx in range(7, -1, -1)
-        ]
-        rows.append(row)
-    return rows
 
 
 class Tile(object):
@@ -47,7 +37,7 @@
         super().__init__()
 
         self.raw_tile = tile
-        self.tile = parse_tile(self.raw_tile)
+        self.tile = self.parse_tile(self.raw_tile)
         self.img_data = bytes(sum(self.tile, []))
 
         self.set_palette(self.default_palette)
@@ -65,6 +55,19 @@
         image.setColorTable(self.palette_to_qt())
         self.pixmap = QtGui.QPixmap(image)
 
+    @classmethod
+    def parse_tile(cls, tile):
+        """Given a raw tile's bytes, convert it to an 8x8 array of integers."""
+        lowplane, hiplane = tile[0:8], tile[8:16]
+        rows = []
+        for lowbyte, hibyte in zip(lowplane, hiplane):
+            row = [
+                ((lowbyte >> idx) & 1) + 2*((hibyte >> idx) & 1)
+                for idx in range(7, -1, -1)
+            ]
+            rows.append(row)
+        return rows
+
 
 class GridHolder(object):
     def __init__(self, things, numrows, numcols, fillvalue=None):