diff --git a/layouts/partials/assets/helpers/GetDimension.html b/layouts/partials/assets/helpers/GetDimension.html
index 0c3644b1..24529913 100644
--- a/layouts/partials/assets/helpers/GetDimension.html
+++ b/layouts/partials/assets/helpers/GetDimension.html
@@ -3,11 +3,23 @@
 -->
 
 {{ $ratio := .ratio }}
-
 {{ $dim := "" }}
-{{ $matches := first 1 (where site.Data.dimensions "ratio" $ratio) }}
-{{ if eq ($matches | len) 1 }}
-    {{ $dim = (index $matches 0).dimensions }}
+{{ $default := dict "4x3" "1400x1050" "3x2" "1400x933" "1x1" "1400x1400" "16x9" "1400x788" "21x9" "1400x600" "auto" "1400" }}
+
+<!-- Initialize dimensions data - stripping unsupported file extension -->
+{{ $config := "dimensions" }}
+{{ with index site.Params "dam" }}{{ with index . "dimensions" }}{{ $config = . }}{{ end }}{{ end }}
+{{ $config = path.Join (path.Dir $config) (path.BaseName $config) }}
+
+{{ with index site.Data $config }}
+    {{ $matches := first 1 (where . "ratio" $ratio) }}
+    {{ if eq ($matches | len) 1 }}
+        {{ $dim = (index $matches 0).dimensions }}
+    {{ end }}
+{{ end }}
+
+{{ if not $dim }}
+    {{ $dim = slice (index $default $ratio)  }}
 {{ end }}
 
 {{ return $dim }}