Update app.py

app.py

@@ -27,11 +27,11 @@ def generate_image():
 
     # Save the generated image to a BytesIO object
     img_byte_arr = io.BytesIO()
-    generated_image.save(img_byte_arr, format='JPEG')
+    generated_image.save(img_byte_arr, format='PNG')
     img_byte_arr.seek(0)  # Move the cursor to the beginning of the BytesIO object
 
     # Send the generated image back to the client
-    return send_file(img_byte_arr, mimetype='image/jpeg')
+    return send_file(img_byte_arr, mimetype='image/png')
 
 
 if __name__ == "__main__":