diff --git a/__init__.py b/__init__.py
index c4aef05..0706783 100644
--- a/__init__.py
+++ b/__init__.py
@@ -385,7 +385,11 @@ async def get_model_preview(request):
                 crop_box = (0, y0, w0, y0 + int(crop_height_fp))
             image = image.crop(crop_box)
 
-            image.thumbnail((w, h))
+            if w < w0 and h < h0:
+                resampling_method = Image.Resampling.BOX
+            else:
+                resampling_method = Image.Resampling.BICUBIC
+            image.thumbnail((w, h), resample=resampling_method)
 
             if not image_format_is_equal(image_format, response_image_format) and (response_image_format == 'JPEG' or response_image_format == 'JPG'):
                 image = image.convert('RGB')
diff --git a/web/model-manager.css b/web/model-manager.css
index 420d5d7..f2afa0b 100644
--- a/web/model-manager.css
+++ b/web/model-manager.css
@@ -322,8 +322,8 @@
 /* preview image */
 .model-manager .item {
     position: relative;
-    width: 230px;
-    height: 345px;
+    width: 240px;
+    height: 360px;
     text-align: center;
     overflow: hidden;
 	border-radius: 8px;