diff --git a/src/bitmap.c b/src/bitmap.c
index 46d339a..9c0c12d 100644
--- a/src/bitmap.c
+++ b/src/bitmap.c
@@ -89,3 +89,17 @@ bitmap_unpack(const unsigned char *map,
 
   return buf_size;
 }
+
+void
+bitmap_print(const unsigned char *map) {
+  char line[BITMAP_SIDE * 2 + 1];
+
+  line[BITMAP_SIDE * 2] = '\0';
+  for (size_t i = 0; i < BITMAP_SIDE; i++) {
+    for (size_t j = 0; j < BITMAP_SIDE; j++, map++) {
+      line[(j * 2) + 0] = (*map == 0x00) ? CHAR_NONE : CHAR_USED;
+      line[(j * 2) + 1] = (*map == 0x00) ? CHAR_NONE : CHAR_USED;
+    }
+    puts(line);
+  }
+}
diff --git a/src/bitmap.h b/src/bitmap.h
index 912c645..36995f9 100644
--- a/src/bitmap.h
+++ b/src/bitmap.h
@@ -22,4 +22,7 @@ bitmap_diffmap(unsigned char *diff,
 size_t
 bitmap_unpack(const unsigned char *map,
               unsigned char ** const buf);
+
+void
+bitmap_print(const unsigned char *map);
 #endif