Update app.py

app.py

@@ -20,7 +20,9 @@ padding_color = st.color_picker("Select padding color", value="#FFFFFF")
 
 quality = st.slider("Select image quality (1-100)", min_value=1, max_value=100, value=80)
 
-if st.button("Resize Images"):
+resize_button = st.button("Resize Images", key="resize-button")
+
+if resize_button and uploaded_files:
     resized_images = []
     progress_bar = st.progress(0)