diff --git a/_includes/header.html b/_includes/header.html
new file mode 100644
index 00000000..b2fb3644
--- /dev/null
+++ b/_includes/header.html
@@ -0,0 +1,9 @@
+<header class="site-header">
+
+  <div class="wrapper">
+    {%- assign default_paths = site.pages | map: "path" -%}
+    {%- assign page_paths = site.header_pages | default: default_paths -%}
+    {%- assign titles_size = site.pages | map: 'title' | join: '' | size -%}
+    <a class="site-title" rel="author" href="{{ "/" | relative_url }}">{{ site.title | escape }}</a>
+  </div>
+</header>
diff --git a/assets/social-media-preview.png b/assets/social-media-preview.png
new file mode 100644
index 00000000..d4e9f712
Binary files /dev/null and b/assets/social-media-preview.png differ
diff --git a/index.md b/index.md
index d71416b8..eb94c80f 100644
--- a/index.md
+++ b/index.md
@@ -1,5 +1,12 @@
 ---
 layout: signed
+
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: en_US
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_de.md b/index_de.md
index ba8c80bb..1ca9cd41 100644
--- a/index_de.md
+++ b/index_de.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: de_DE
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_es.md b/index_es.md
index b64fe877..00e8fa31 100644
--- a/index_es.md
+++ b/index_es.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: es_ES
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_fr.md b/index_fr.md
index b9451831..65b44668 100644
--- a/index_fr.md
+++ b/index_fr.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: fr_FR
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_pl.md b/index_pl.md
index c7597114..dd3e0bff 100644
--- a/index_pl.md
+++ b/index_pl.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: pl_PL
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_pt_br.md b/index_pt_br.md
index 5cdd53b9..9ad6e746 100644
--- a/index_pt_br.md
+++ b/index_pt_br.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: pt_BR
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_ro.md b/index_ro.md
index 875efb52..bcbd933c 100644
--- a/index_ro.md
+++ b/index_ro.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: ro_RO
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_tr.md b/index_tr.md
index 8522df65..01ba7d11 100644
--- a/index_tr.md
+++ b/index_tr.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: tr_TR
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23
diff --git a/index_zh_cn.md b/index_zh_cn.md
index 0e67c592..b74e5d2c 100644
--- a/index_zh_cn.md
+++ b/index_zh_cn.md
@@ -1,5 +1,11 @@
 ---
 layout: signed
+title: An open letter in support of Richard M. Stallman
+description: An open letter in support of Richard Matthew Stallman being reinstated by the Free Software Foundation
+image: /assets/social-media-preview.png
+locale: zh_CN
+twitter:
+  card: summary_large_image
 ---
 
 2021-03-23