diff --git a/README.md b/README.md
index f9d6394..f97a9a1 100644
--- a/README.md
+++ b/README.md
@@ -194,6 +194,9 @@ file 'file 4.mkv'
 ## Get Interface MAC Easy
 `getmac /v`
 
+## Batch rename extensions
+`ren *.* *.jpg`
+
 ## List usernames on machine
 `net user`