diff --git a/ndlocr-lite-gui/main.py b/ndlocr-lite-gui/main.py
index 29ab8dc..6df2aae 100644
--- a/ndlocr-lite-gui/main.py
+++ b/ndlocr-lite-gui/main.py
@@ -1210,7 +1210,7 @@ def pick_directory_result(e: ft.FilePickerResultEvent):
                         ext = filename.split(".")[-1].lower()
 
                         # 対象の拡張子かチェック
-                        if ext in ["jpg", "png", "tiff", "jp2", "tif", "jpeg", "bmp"]:
+                        if ext in ["jpg", "png", "tiff", "jp2", "tif", "jpeg", "bmp","webp"]:
                             all_files_to_process.append((full_path, "image"))
                         elif ext == "pdf":
                             all_files_to_process.append((full_path, "pdf"))
diff --git a/src/ocr.py b/src/ocr.py
index f38a68b..3cb0d83 100644
--- a/src/ocr.py
+++ b/src/ocr.py
@@ -157,7 +157,7 @@ def process(args):
     
     for inputpath in rawinputpathlist:
         ext=inputpath.split(".")[-1]
-        if ext.lower() in ["jpg","png","tiff","jp2","tif","jpeg","bmp"]:
+        if ext.lower() in ["jpg","png","tiff","jp2","tif","jpeg","bmp","webp"]:
             inputpathlist.append(inputpath)
     if len(inputpathlist)==0:
         print("Images are not found.")