diff --git a/prosopopee/prosopopee.py b/prosopopee/prosopopee.py
index f355480..7c3ef6a 100644
--- a/prosopopee/prosopopee.py
+++ b/prosopopee/prosopopee.py
@@ -363,7 +363,8 @@ def build_gallery(settings, gallery_settings, gallery_path, template):
         gallery=gallery_settings,
         Image=Image,
         Video=Video,
-        link=gallery_path
+        link=gallery_path,
+        name=gallery_path.split('/', 1)[-1]
     ).encode("Utf-8")
 
     open(Path("build").joinpath(gallery_path, "index.html"), "w").write(html)
diff --git a/prosopopee/themes/exposure/templates/opengraph.html b/prosopopee/themes/exposure/templates/opengraph.html
index fbcbb89..f2e75d1 100644
--- a/prosopopee/themes/exposure/templates/opengraph.html
+++ b/prosopopee/themes/exposure/templates/opengraph.html
@@ -1,5 +1,7 @@
+
+{% set absolute_url = settings.url + "/" + name %}
 <meta property="og:title" content="{{ gallery.title }}"/>
-<meta property="og:image" content="{{ gallery.cover }}"/>
+<meta property="og:image" content="{{ absolute_url }}{{ gallery.cover }}"/>
 <meta property="og:site_name" content="{{ settings.title }}"/>
 {% if gallery.description %}
 <meta property="og:description" content="{{ gallery.description }}"/>
diff --git a/prosopopee/themes/light/templates/opengraph.html b/prosopopee/themes/light/templates/opengraph.html
index fbcbb89..f2e75d1 100644
--- a/prosopopee/themes/light/templates/opengraph.html
+++ b/prosopopee/themes/light/templates/opengraph.html
@@ -1,5 +1,7 @@
+
+{% set absolute_url = settings.url + "/" + name %}
 <meta property="og:title" content="{{ gallery.title }}"/>
-<meta property="og:image" content="{{ gallery.cover }}"/>
+<meta property="og:image" content="{{ absolute_url }}{{ gallery.cover }}"/>
 <meta property="og:site_name" content="{{ settings.title }}"/>
 {% if gallery.description %}
 <meta property="og:description" content="{{ gallery.description }}"/>
diff --git a/prosopopee/themes/material/templates/opengraph.html b/prosopopee/themes/material/templates/opengraph.html
index fbcbb89..f2e75d1 100644
--- a/prosopopee/themes/material/templates/opengraph.html
+++ b/prosopopee/themes/material/templates/opengraph.html
@@ -1,5 +1,7 @@
+
+{% set absolute_url = settings.url + "/" + name %}
 <meta property="og:title" content="{{ gallery.title }}"/>
-<meta property="og:image" content="{{ gallery.cover }}"/>
+<meta property="og:image" content="{{ absolute_url }}{{ gallery.cover }}"/>
 <meta property="og:site_name" content="{{ settings.title }}"/>
 {% if gallery.description %}
 <meta property="og:description" content="{{ gallery.description }}"/>