better previews for documents

app/item/models.py

@@ -116,6 +116,8 @@ class Item(models.Model):
             if not key:
                 key = meta.attrib.get('property')
             value = meta.attrib.get('content')
+            if key == "thumbnail":
+                value = value.replace('/512p', '/1024p')
             if key and value:
                 if key in ('viewport', ):
                     continue

app/static/css/site.scss

@@ -116,6 +116,7 @@ header {
                 width: 100%;
                 aspect-ratio: 16/9;
                 object-fit: cover;
+                object-position: top;
             }
         }
         .content {