diff --git a/iphone-photo-format.sh b/iphone-photo-format.sh
index 2ab440a..fd6d962 100644
--- a/iphone-photo-format.sh
+++ b/iphone-photo-format.sh
@@ -24,7 +24,7 @@ for file in *.{HEIC,heic,PNG,png,JPG}; do
   new_filename=${new_filename/.PNG/.jpg}
   new_filename=${new_filename/.JPG/.jpg}
 
-  if [[ "${filename##*.}" == "png" || "${filename##*.}" == "PNG" || "${filename##*.}" == "jpg" || "${filename##*.}" == "JPG" ]]; then
+  if [[ "${filename##*.}" == "png" || "${filename##*.}" == "PNG" ]]; then
     # 使用 ImageMagick 直接处理 PNG 图片
     magick "$file" -gravity center -quality 80 output/$new_filename
   else