diff --git a/security.py b/security.py
index f3012eb..5ab9d46 100644
--- a/security.py
+++ b/security.py
@@ -4,6 +4,8 @@ from __future__ import annotations
 
 import os
 
+from urllib.parse import urlparse
+
 from flask import Flask, request
 from flask_limiter import Limiter
 from flask_limiter.util import get_remote_address
@@ -34,6 +36,7 @@ def configure_app(flask_app: Flask) -> None:
             x_for=1,
             x_proto=1,
             x_host=1,
+            x_port=1,
         )
 
     limiter.init_app(flask_app)
@@ -56,7 +59,14 @@ def configure_app(flask_app: Flask) -> None:
 
 def external_base_url() -> str:
     """Build public base URL (respects reverse proxy and PREFERRED_URL_SCHEME)."""
-    preferred = os.environ.get("PREFERRED_URL_SCHEME", "").strip()
-    if preferred:
-        return f"{preferred}://{request.host}"
-    return request.host_url.rstrip("/")
+    host_url = request.host_url.rstrip("/")
+    preferred = os.environ.get("PREFERRED_URL_SCHEME", "").strip().lower()
+    if not preferred:
+        return host_url
+
+    # Use netloc from host_url (honours ProxyFix / X-Forwarded-Host), not request.host
+    # alone, which can still include the internal upstream port behind a reverse proxy.
+    netloc = urlparse(host_url).netloc
+    if not netloc:
+        netloc = request.host
+    return f"{preferred}://{netloc}"
diff --git a/static/style.css b/static/style.css
index 2d7ac90..cc840e5 100644
--- a/static/style.css
+++ b/static/style.css
@@ -601,6 +601,7 @@ tr:hover td { background: var(--bg-hover); }
 .landing-page {
   min-height: 100vh;
   display: flex;
+  flex-direction: column;
   align-items: center;
   justify-content: center;
   padding: 24px;
@@ -661,6 +662,35 @@ tr:hover td { background: var(--bg-hover); }
 
 .landing-lang { margin-top: 8px; }
 
+.site-footer {
+  text-align: center;
+  padding: 16px 24px 20px;
+  font-size: 0.78rem;
+  color: var(--text-muted);
+  border-top: 1px solid var(--border);
+}
+
+.site-footer p {
+  margin: 0;
+}
+
+.site-footer a {
+  color: var(--accent);
+  text-decoration: none;
+}
+
+.site-footer a:hover {
+  text-decoration: underline;
+}
+
+.landing-page .site-footer {
+  width: 100%;
+  max-width: 520px;
+  background: transparent;
+  border-top: none;
+  padding-top: 0;
+}
+
 /* Viewer link banner */
 .viewer-banner {
   display: flex;
diff --git a/templates/_footer.html b/templates/_footer.html
new file mode 100644
index 0000000..b9345d1
--- /dev/null
+++ b/templates/_footer.html
@@ -0,0 +1,3 @@
+<footer class="site-footer">
+  <p>© 2026 <a href="https://dashy.elpatron.me" target="_blank" rel="noopener noreferrer">KnorrLabs</a> – <a href="https://gitea.elpatron.me/elpatron/Idle-Fantasy-Save-Viewer" target="_blank" rel="noopener noreferrer">Source Code</a></p>
+</footer>
diff --git a/templates/index.html b/templates/index.html
index 41847be..7d3dc5d 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -73,5 +73,6 @@
       <section class="tab-panel" id="tab-history"></section>
     </main>
   </div>
+  {% include '_footer.html' %}
 </body>
 </html>
diff --git a/templates/landing.html b/templates/landing.html
index b984f95..a40c784 100644
--- a/templates/landing.html
+++ b/templates/landing.html
@@ -52,5 +52,6 @@
       </select>
     </label>
   </main>
+  {% include '_footer.html' %}
 </body>
 </html>