diff --git a/tools/kcg_doc.py b/tools/kcg_doc.py
new file mode 100644
index 0000000..226e851
--- /dev/null
+++ b/tools/kcg_doc.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+# 作用：
+
+本脚本用于实现自动替换KeepChatGPT说明文档（README.md）里的图片链接
+
+"""
+
+import os, re
+
+def save(data, outfile):
+    if not os.path.exists('test'):
+        os.mkdir('test')
+    open(outfile, 'wb').write(data.encode())
+
+def main():
+    rm = open('README.md', 'r').read()
+    kcg_code = open('KeepChatGPT.user.js', 'r').read()
+
+    cdn_pre = 'https://raw.gitmirror.com/xcanwin/KeepChatGPT/main'
+    version = re.findall(r'// @version\s+(\S*?)\n', kcg_code)[0]
+    # version = '1.0'
+
+    rm_new = re.sub(r'src="(.*?)"', r'src="{}\1?v={}"'.format(cdn_pre, version), rm)
+    print(rm_new)
+    save(rm_new, 'test/README_CDN.md')
+
+main()
diff --git a/tools/kcg_i18n.py b/tools/kcg_i18n.py
index 0d1b0cd..2b405bf 100644
--- a/tools/kcg_i18n.py
+++ b/tools/kcg_i18n.py
@@ -71,10 +71,10 @@ def format_json(lang):
     langStr += '}'
     return langStr
 
-def save(langStr):
+def save(data, outfile):
     if not os.path.exists('test'):
         os.mkdir('test')
-    open('test/lang.txt', 'wb').write(langStr.encode())
+    open(outfile, 'wb').write(data.encode())
 
 def main():
     lang = '''
@@ -174,6 +174,6 @@ def main():
 
     langStr = format_json(lang)
     print(langStr)
-    save(langStr)
+    save(langStr, 'test/lang.txt')
 
 main()