diff --git a/layouts/_partials/images/get-image.html b/layouts/_partials/images/get-image.html
index 4b4a00c..6cb94d9 100644
--- a/layouts/_partials/images/get-image.html
+++ b/layouts/_partials/images/get-image.html
@@ -37,6 +37,15 @@
   {{- end -}}
 {{- end -}}
 
+{{- if ( and $hint ( not $isResizable ) ) -}}
+  {{- warnidf "pointless-hint" "Hint '%s' provided for an image that is not convertible to .webm, ignoring… (%q)" $hint $img.File.Path }}
+{{- end -}}
+
+{{- $valid_hint_values := ( slice "drawing" "icon" "photo" "picture" "text" ) -}}
+{{- if ( and $hint ( not ( in $valid_hint_values $hint ) ) ) -}}
+  {{- errorf "Hint '%s' is not valid, use one of %q instead. (%q)" $hint $img.File.Path -}}
+{{- end -}}
+
 <!-- Rendering -->
 
 {{- if $isResizable -}}