diff --git a/rename_bw_manga.py b/rename_bw_manga.py
new file mode 100644
index 0000000..c96684b
--- /dev/null
+++ b/rename_bw_manga.py
@@ -0,0 +1,84 @@
+from argparse import ArgumentParser
+from json import loads
+from os import listdir
+from os.path import exists, isdir, join, splitext
+from shutil import move
+from typing import List
+from zipfile import ZipFile
+
+
+p = ArgumentParser()
+p.add_argument("-r", "--recursive", help="Recursively process input directory",
+               action='store_true', default=False)
+p.add_argument("-v", "--verbose", help="Enable verbose logging",
+               action='store_true', default=False)
+p.add_argument("input", help="Input file/directory.", default='.', nargs='?')
+
+
+def get_zip_files(dir: str, r: bool) -> List[str]:
+    if not isdir(dir):
+        if exists(dir) and dir.endswith('.zip'):
+            return [dir]
+        return []
+    files = listdir(dir)
+    re = []
+    for file in files:
+        file = join(dir, file)
+        if isdir(file):
+            if r:
+                re += get_zip_files(file, r)
+        elif file.endswith('.zip'):
+            re.append(file)
+    return re
+
+
+def rename_zip(file: str, json_path: str, verbose: bool):
+    tmp = splitext(file)
+    tmp_file = tmp[0] + '_tmp' + tmp[1]
+    with ZipFile(file, 'r') as inp:
+        files = inp.namelist()
+        json_data = inp.open("configuration_pack.json")
+        if not json_data:
+            raise ValueError('Can not find configuration_pack.json in zip.')
+        files.remove("configuration_pack.json")
+        json_data = json_data.read()
+        with open(json_path, 'wb') as json:
+            json.write(json_data)
+        if verbose:
+            print(f'{file}/configuration_pack.json -> {json_path}')
+        data = loads(json_data)
+        config = data['configuration']
+        with ZipFile(tmp_file, 'w') as out:
+            clen = len(str(len(config['contents'])))
+            for c in config['contents']:
+                f = c['file']
+                fc = data[f]
+                plen = len(str(len(fc['FileLinkInfo']['PageLinkInfoList'])))
+                for page in fc['FileLinkInfo']['PageLinkInfoList']:
+                    page_no = page['Page']['No']
+                    page_src = f"{f}/{page_no}.{c['type']}"
+                    page_dest = f"{str(c['index']).rjust(clen, '0')}_{f.replace('/', '_')}_{str(page_no).rjust(plen, '0')}.{c['type']}"  # noqa: E501
+                    page_data = inp.open(page_src)
+                    if not page_data:
+                        raise ValueError(f'Can not find {page_src}')
+                    files.remove(page_src)
+                    out.writestr(page_dest, page_data.read())
+                    if verbose:
+                        print(f'{file}/{page_src} -> {tmp_file}/{page_dest}')
+    files = [f for f in files if not f.endswith('/')]
+    if len(files) > 0:
+        print(files)
+        raise ValueError('Some file not used.')
+    move(tmp_file, file)
+    if verbose:
+        print(f'{tmp_file} -> {file}')
+
+
+arg = p.parse_intermixed_args()
+for file in get_zip_files(arg.input, arg.recursive):
+    json_path = splitext(file)[0] + '.json'
+    if exists(json_path):
+        if arg.verbose:
+            print(f'Skip file {file}.')
+        continue
+    rename_zip(file, json_path, arg.verbose)