diff --git a/Caddyfile b/Caddyfile
index ea3017b..d2f4bee 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -53,11 +53,11 @@ http://static-mat-services.fly.dev {
 
 	# caching
 	@static {
-		path *.bmp *.jpg *.png *.svg *.gif *.pdf *.css *.js *.woff *.woff2
+		path *.bmp *.jpg *.png *.svg *.gif *.pdf *.css *.js *.woff *.woff2 /style/* /font/* /image/*
 	}
 	route {
-		header Cache-Control max-age=180
-		header /sitemap.xml Cache-Control max-age=0
 		header @static Cache-Control max-age=31536000, immutable
+		header *.xml Cache-Control max-age=0
+		header ?Cache-Control max-age=360
 	}
 }
diff --git a/content/posts/cellular-automata-toys/index.md b/content/posts/cellular-automata-toys/index.md
index b15e191..a0aa22f 100644
--- a/content/posts/cellular-automata-toys/index.md
+++ b/content/posts/cellular-automata-toys/index.md
@@ -3,6 +3,8 @@ title = "cellular automata toys in löve2d"
 date = "2022-09-15"
 [taxonomies]
 tags = ["cellular-automata", "lua", "löve2d"]
+[extra]
+hero = true
 +++
 
 <figure>
diff --git a/templates/partials/header.html b/templates/partials/header.html
index 36e3060..dc871c4 100644
--- a/templates/partials/header.html
+++ b/templates/partials/header.html
@@ -4,17 +4,7 @@
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
-  {# Site title #}
   {% set current_path = current_path | default(value="/") %}
-  {% if current_path == "/" %}
-  <title>
-    {{ config.title | default(value="Home") }}
-  </title>
-  {% else %}
-  <title>
-    {{ page.title | default(value=config.title) | default(value="Post") }}
-  </title>
-  {% endif %}
 
   {# Favicon #}
   {% if config.extra.favicon %}
@@ -48,5 +38,35 @@
   {% endfor %}
   {% endif %}
 
+  {% if current_path == "/" %}
+  {% set current_title = config.title | default(value="home") %}
+  {% set current_description = "the personal site of mat ess" %}
+  {% set hero = false %}
+  {% else %}
+  {% set current_title = page.title | default(value=config.title) | default(value="post") %}
+  {% set current_description = page.description | default(value="from the personal site of mat ess") %}
+  {% set hero = page.extra.hero | default(value=false) %}
+  {% endif %}
+
+  {# Meta links #}
+  <title>{{ current_title }}</title>
   <link rel="canonical" href="{{ get_url(path=current_path) }}" />
+  <meta name="title" content="{{ current_title }}">
+  <meta name="description" content="{{ current_description }}">
+
+  {# Open Graph / Facebook #}
+  <meta property="og:type" content="website">
+  <meta property="og:title" content="{{ current_title }}">
+  <meta property="og:description" content="{{ current_description }}">
+  {% if hero %}
+  <meta property="og:image" content="hero.png">
+  {% endif %}
+
+  {# Twitter #}
+  <meta property="twitter:card" content="summary_large_image">
+  <meta property="twitter:title" content="{{ current_title }}">
+  <meta property="twitter:description" content="{{ current_description }}">
+  {% if hero %}
+  <meta property="twitter:image" content="hero.png">
+  {% endif %}
 </head>
\ No newline at end of file