diff --git a/edtanous/rootfs_size.py b/edtanous/rootfs_size.py
new file mode 100644
index 0000000..3751fcf
--- /dev/null
+++ b/edtanous/rootfs_size.py
@@ -0,0 +1,64 @@
+import subprocess
+import tempfile
+import os
+from os.path import join, getsize
+
+# TODO
+# - Make build directory an input parameter
+# - Make squashfs file an input parameter
+# - Fix 80 char violations and run through pep8
+
+BUILD_DIR = "/home/ed/openbmc-openbmc"
+# files below this size wont be attempted
+FILE_SIZE_LIMIT = 0
+
+SQUASHFS = BUILD_DIR + \
+    "/build/tmp/deploy/images/wolfpass/intel-platforms-wolfpass.squashfs-xz"
+
+original_size = getsize(SQUASHFS)
+print("squashfs size: ".format(original_size))
+
+results = []
+
+with tempfile.TemporaryDirectory() as tempremovedfile:
+    with tempfile.TemporaryDirectory() as tempsquashfsdir:
+        print("writing to " + tempsquashfsdir)
+        command = ["unsquashfs", "-d",
+                   os.path.join(tempsquashfsdir, "squashfs-root"),  SQUASHFS]
+        print(" ".join(command))
+        subprocess.check_call(command)
+        squashfsdir = tempsquashfsdir + "/squashfs-root"
+
+        files_to_test = []
+        for root, dirs, files in os.walk(squashfsdir):
+            for name in files + dirs:
+                filepath = os.path.join(root, name)
+                if not os.path.islink(filepath):
+                    # ensure files/dirs can be renamed
+                    os.chmod(filepath,0o711)
+                    if getsize(filepath) > FILE_SIZE_LIMIT:
+                        files_to_test.append(filepath)
+
+        print("{} files to attempt removing".format(len(files_to_test)))
+
+        for filepath in files_to_test:
+            name = os.path.basename(filepath)
+            newname = os.path.join(tempremovedfile, name)
+            os.rename(filepath, newname)
+            with tempfile.TemporaryDirectory() as newsquashfsroot:
+                subprocess.check_output(
+                    ["mksquashfs", tempsquashfsdir, newsquashfsroot + "/test", "-comp", "xz"])
+
+                results.append((filepath.replace(squashfsdir, ""),
+                                original_size - getsize(newsquashfsroot + "/test")))
+            os.rename(newname, filepath)
+
+            print("{:>6} of {}".format(len(results), len(files_to_test)))
+
+results.sort(key=lambda x: x[1], reverse=True)
+
+with open("results.txt", 'w') as result_file:
+    for filepath, size in results:
+        result = "{:>10}: {}".format(size, filepath)
+        print(result)
+        result_file.write(result + "\n")