diff --git a/smart_service/apis/master_api.py b/smart_service/apis/master_api.py
index 9f1b5be..100e326 100644
--- a/smart_service/apis/master_api.py
+++ b/smart_service/apis/master_api.py
@@ -8,8 +8,14 @@ import json
 from frappe.utils import cstr
 import datetime
 from smart_service.apis.app_user_login import input_validation
+import os
 current_db_name = frappe.conf.get("db_name")
 
+site_name = cstr(frappe.local.site)
+
+base_url = os.path.expanduser(
+    "~") + "/frappe-bench/sites/" + site_name + "/public/files"
+
 
 @frappe.whitelist(allow_guest=True)
 def masters1():
@@ -285,3 +291,23 @@ def masters(args=None, LSD=None):
         api = {"status": 0, "error": e}
 
     return api
+
+
+def change_file_type():
+    folder_path = base_url
+    count = 0
+    for root, dirs, files in os.walk(folder_path):
+        for file in files:
+            if file.split('.')[-1] == 'PNG':
+                count += 1
+                f1 = os.path.join(root, file)
+                f2 = f1[:-3] + 'png'
+                os.rename(f1, f2)
+
+            if file.split('.')[-1] == 'JPG':
+                count += 1
+                f1 = os.path.join(root, file)
+                f2 = f1[:-3] + 'jpg'
+                os.rename(f1, f2)
+
+    return count