diff --git a/config/_default/params.toml b/config/_default/params.toml
index eb74615..efee285 100644
--- a/config/_default/params.toml
+++ b/config/_default/params.toml
@@ -14,3 +14,6 @@ email = "valknar@pivoine.art"
 [visualizer]
   particleCount = 5000
   fftSize = 512
+
+[images]
+  default = "/images/og-default.png"
diff --git a/layouts/partials/head/opengraph.html b/layouts/partials/head/opengraph.html
index 7dec406..81479a5 100755
--- a/layouts/partials/head/opengraph.html
+++ b/layouts/partials/head/opengraph.html
@@ -1,7 +1,19 @@
 {{- $title := .Title | default .Site.Title -}}
 {{- $desc := .Description | default .Summary | default .Site.Params.description | plainify | truncate 200 -}}
-{{- $image := .Params.image | default "/images/og-default.png" -}}
-{{- if not (strings.HasPrefix $image "http") -}}
+
+{{/* Resolve image: page resource cover.* > .Params.image > site default */}}
+{{- $image := "" -}}
+{{- with .Resources.GetMatch "cover.*" -}}
+  {{- $img := .Resize "1200x webp q90" -}}
+  {{- $image = $img.Permalink -}}
+{{- else -}}
+  {{- with $.Params.image -}}
+    {{- $image = . -}}
+  {{- else -}}
+    {{- $image = $.Site.Params.images.default | default "/images/og-default.png" -}}
+  {{- end -}}
+{{- end -}}
+{{- if and $image (not (strings.HasPrefix $image "http")) -}}
   {{- $image = $image | absURL -}}
 {{- end -}}
 
diff --git a/layouts/partials/head/twitter.html b/layouts/partials/head/twitter.html
index b89f1be..c4e2f50 100755
--- a/layouts/partials/head/twitter.html
+++ b/layouts/partials/head/twitter.html
@@ -1,11 +1,23 @@
 {{- $title := .Title | default .Site.Title -}}
 {{- $desc := .Description | default .Summary | default .Site.Params.description | plainify | truncate 200 -}}
-{{- $image := .Params.image | default "/images/og-default.png" -}}
-{{- if not (strings.HasPrefix $image "http") -}}
+
+{{/* Resolve image: page resource cover.* > .Params.image > site default */}}
+{{- $image := "" -}}
+{{- with .Resources.GetMatch "cover.*" -}}
+  {{- $img := .Resize "1200x webp q90" -}}
+  {{- $image = $img.Permalink -}}
+{{- else -}}
+  {{- with $.Params.image -}}
+    {{- $image = . -}}
+  {{- else -}}
+    {{- $image = $.Site.Params.images.default | default "/images/og-default.png" -}}
+  {{- end -}}
+{{- end -}}
+{{- if and $image (not (strings.HasPrefix $image "http")) -}}
   {{- $image = $image | absURL -}}
 {{- end -}}
 
-{{/* Determine card type */}}
+{{/* Determine card type - use large image when we have one */}}
 {{- $cardType := "summary" -}}
 {{- if $image -}}
   {{- $cardType = "summary_large_image" -}}
diff --git a/static/images/og-default.png b/static/images/og-default.png
new file mode 100644
index 0000000..8ad5d5e
Binary files /dev/null and b/static/images/og-default.png differ