diff --git a/fet2020/gallery/utils.py b/fet2020/gallery/utils.py
index 466163df..35de7487 100644
--- a/fet2020/gallery/utils.py
+++ b/fet2020/gallery/utils.py
@@ -5,9 +5,10 @@ from PIL import Image, ExifTags, ImageOps
 from django.conf import settings
 
 
-logger = logging.getLogger(__name__)
 gallery_path = settings.GALLERY["path"]
 gallery_thumb_path = settings.GALLERY["thumb_path"]
+logger = logging.getLogger(__name__)
+size = (320, 320)
 valid_images = [".jpg", ".png"]
 
 
@@ -88,6 +89,6 @@ def create_thumbs(folder_path):
                     elif exif[orientation] == 8:
                         image = image.rotate(90, expand=True)
 
-                thumb = ImageOps.fit(image, (200, 200), Image.ANTIALIAS)
+                thumb = ImageOps.fit(image, size, Image.ANTIALIAS)
                 thumb.save(thumb_file_path)
                 logger.info(f"Save thumb 'thumb_{f}'.")