diff --git a/app.py b/app.py
index a2b1ae5..c323e46 100644
--- a/app.py
+++ b/app.py
@@ -2,7 +2,7 @@ import os
 from datetime import datetime
 from flask import Flask, render_template, abort, jsonify, request
 from comics_data import (
-    COMICS, COMIC_NAME, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT, HEADER_IMAGE, FOOTER_IMAGE,
+    COMICS, COMIC_NAME, SITE_URL, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT, HEADER_IMAGE, FOOTER_IMAGE,
     COMPACT_FOOTER, ARCHIVE_FULL_WIDTH, USE_COMIC_NAV_ICONS, USE_HEADER_NAV_ICONS,
     USE_FOOTER_SOCIAL_ICONS, SOCIAL_INSTAGRAM, SOCIAL_YOUTUBE, SOCIAL_EMAIL,
     API_SPEC_LINK
@@ -20,6 +20,7 @@ def inject_global_settings():
     """Make global settings available to all templates"""
     return {
         'comic_name': COMIC_NAME,
+        'site_url': SITE_URL,
         'header_image': HEADER_IMAGE,
         'footer_image': FOOTER_IMAGE,
         'compact_footer': COMPACT_FOOTER,
diff --git a/comics_data.py b/comics_data.py
index 60a5da1..8ae4778 100644
--- a/comics_data.py
+++ b/comics_data.py
@@ -4,6 +4,10 @@
 # Global setting: The name of your comic/website
 COMIC_NAME = 'Sunday Comics'
 
+# Global setting: Your website's domain (used for RSS feed, Open Graph tags, etc.)
+# Update this to your production domain when deploying
+SITE_URL = 'http://localhost:3000'
+
 # Global setting: Set to True to make all comics full-width by default
 # Individual comics can override this with 'full_width': False
 FULL_WIDTH_DEFAULT = False
diff --git a/scripts/generate_rss.py b/scripts/generate_rss.py
index 22bf1d7..f5150c6 100755
--- a/scripts/generate_rss.py
+++ b/scripts/generate_rss.py
@@ -10,10 +10,9 @@ from xml.dom import minidom
 
 # Add parent directory to path so we can import comics_data
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-from comics_data import COMICS, COMIC_NAME
+from comics_data import COMICS, COMIC_NAME, SITE_URL
 
-# Configuration - update these for your site
-SITE_URL = "http://localhost:3000"  # Change to your actual domain
+# Configuration
 SITE_TITLE = COMIC_NAME
 SITE_DESCRIPTION = "A webcomic about life, the universe, and everything"
 SITE_LANGUAGE = "en-us"
diff --git a/templates/base.html b/templates/base.html
index 748d4cd..a68bbd7 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -10,10 +10,10 @@
 
     <!-- Open Graph / Facebook -->
     <meta property="og:type" content="website">
-    <meta property="og:url" content="{% block meta_url %}{{ request.url }}{% endblock %}">
+    <meta property="og:url" content="{% block meta_url %}{{ site_url }}{{ request.path }}{% endblock %}">
     <meta property="og:title" content="{% block og_title %}{{ self.title() }} - {{ comic_name }}{% endblock %}">
     <meta property="og:description" content="{% block og_description %}{{ self.meta_description() }}{% endblock %}">
-    <meta property="og:image" content="{% block og_image %}{{ request.url_root }}static/images/default-preview.png{% endblock %}">
+    <meta property="og:image" content="{% block og_image %}{{ site_url }}/static/images/default-preview.png{% endblock %}">
 
     <!-- Twitter -->
     <meta property="twitter:card" content="summary_large_image">
diff --git a/templates/comic.html b/templates/comic.html
index 00bb878..7fb89b9 100644
--- a/templates/comic.html
+++ b/templates/comic.html
@@ -2,7 +2,7 @@
 
 {% block meta_description %}{{ comic.alt_text }}{% if comic.author_note %} - {{ comic.author_note }}{% endif %}{% endblock %}
 
-{% block og_image %}{{ request.url_root }}static/images/thumbs/{{ comic.filename }}{% endblock %}
+{% block og_image %}{{ site_url }}/static/images/thumbs/{{ comic.filename }}{% endblock %}
 
 {% block content %}
 <div class="comic-container{% if comic.full_width %} comic-container-fullwidth{% endif %}{% if comic.plain %} comic-container-plain{% endif %}" data-comic-number="{{ comic.number }}" data-total-comics="{{ total_comics }}">
diff --git a/templates/index.html b/templates/index.html
index e3a0234..06337b0 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -3,7 +3,7 @@
 {% if comic %}
 {% block meta_description %}{{ comic.alt_text }}{% if comic.author_note %} - {{ comic.author_note }}{% endif %}{% endblock %}
 
-{% block og_image %}{{ request.url_root }}static/images/thumbs/{{ comic.filename }}{% endblock %}
+{% block og_image %}{{ site_url }}/static/images/thumbs/{{ comic.filename }}{% endblock %}
 {% endif %}
 
 {% block content %}