diff --git a/layouts/shortcodes/figure.html b/layouts/shortcodes/figure.html
index d1649e1..97bde9c 100644
--- a/layouts/shortcodes/figure.html
+++ b/layouts/shortcodes/figure.html
@@ -9,7 +9,7 @@ Documentation and licence at https://github.com/liwenyip/hugo-easy-gallery/
 <!-- use either src or link-thumb for thumbnail image -->
 {{- $thumb := .Get "src" | default (printf "%s." (.Get "thumb") | replace (.Get "link") ".") }}
 {{- $thumbResource := $.Page.Resources.GetMatch $thumb }}
-{{- $fitSize := .Get "size" | default "400" }}
+{{- $fitSize := .Get "size" | default "500" }}
 {{- if $thumbResource }}
   {{- $thumbResource = $thumbResource.Fit (printf "%[1]sx%[1]s webp q85" $fitSize) -}}
 {{- end }}