diff --git a/post.hbs b/post.hbs
index 39e28370..5e8f3299 100644
--- a/post.hbs
+++ b/post.hbs
@@ -18,9 +18,9 @@
                     {{img_url feature_image size="m"}} 600w,
                     {{img_url feature_image size="l"}} 1000w,
                     {{img_url feature_image size="xl"}} 2000w"
-            sizes="(max-width: 1000px) 400px, 700px"
+            sizes="(max-width: 1000px) 1000px, 2000px"
             loading="lazy"
-            src="{{img_url feature_image size="m"}}"
+            src="{{img_url feature_image size="xl"}}"
             alt="{{title}}"
         />
         {{/if}}