diff --git a/greenscale.py b/greenscale.py
new file mode 100644
index 0000000..5bd1b58
--- /dev/null
+++ b/greenscale.py
@@ -0,0 +1,16 @@
+import sys
+
+data = sys.stdin.read()
+mybytearray=bytearray(data)
+
+import struct
+
+#output = open('output.bin', 'wb')
+
+for row in range(48/2):  # because we to 2 rows at a time
+ for x in range(40):  
+    nibble1 = mybytearray[2*row*40 + x]
+    nibble2 = mybytearray[(2*row + 1)*40 + x] * 16
+    pixel = nibble1+nibble2
+    pixel = struct.pack("B", pixel)
+    sys.stdout.write(pixel)