diff --git a/mkespfs.py b/mkespfs.py
new file mode 100755
index 0000000..5c9d4a2
--- /dev/null
+++ b/mkespfs.py
@@ -0,0 +1,43 @@
+#! /usr/bin/python3
+
+from sys import argv, exit, stderr, stdout
+from pathlib import Path
+import re, gzip, struct
+
+MAGIC = 0x73665345
+FL_GZIP = 2 # gzipped file flag
+FL_LAST = 1 # last entry file flag
+
+if len(argv) != 2 or not Path(argv[1]).is_dir():
+    print("Usage: {} directory".format(argv[0]), file=stderr)
+    exit(1)
+dir = argv[1]
+
+f_html = list(Path(dir).rglob('*.html'))
+f_css = list(Path(dir).rglob('*.css'))
+f_js = list(Path(dir).rglob('*.js'))
+f_img = list(Path(dir).rglob('*.ico')) + list(Path(dir).rglob('*.png'))
+f_all = f_html + f_css + f_js + f_img
+
+for fn in f_all:
+    if not fn.is_file(): continue
+    out_path = fn.relative_to(dir).as_posix().encode('ascii')
+    info = fn.stat()
+    data_un = fn.read_bytes()
+    data_comp = gzip.compress(data_un)
+
+    print("Processing {} -> {}[{}], {}->{} bytes".format(fn, out_path, len(out_path), info.st_size,
+        len(data_comp)), file=stderr)
+
+    header = struct.pack('<IBBHII', MAGIC, FL_GZIP, 0, len(out_path), len(data_comp), info.st_size)
+    stdout.buffer.write(header)
+    stdout.buffer.write(out_path)
+    if len(out_path)%4 != 0:
+        stdout.buffer.write(bytes(4)[:4-len(out_path)%4])
+    stdout.buffer.write(data_comp)
+    if len(data_comp)%4 != 0:
+        stdout.buffer.write(bytes(4)[:4-len(data_comp)%4])
+
+trailer = struct.pack('<IBBHII', MAGIC, FL_LAST, 0, 0, 0, 0)
+
+print("DONE", file=stderr)