diff --git a/index.php b/index.php
new file mode 100644
index 0000000..097c521
--- /dev/null
+++ b/index.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * WebGIS Connectivity Test
+ */
+
+echo "<h1>🌍 WebGIS Subdomain is Live!</h1>";
+echo "<p><strong>Current Server:</strong> " . $_SERVER['SERVER_NAME'] . "</p>";
+echo "<p><strong>PHP Version:</strong> " . phpversion() . "</p>";
+
+// Check for common GIS extensions (optional but helpful)
+$extensions = ['gd', 'intl', 'bcmath', 'pdo_pgsql'];
+echo "<h3>GIS Extension Check:</h3><ul>";
+foreach ($extensions as $ext) {
+    $status = extension_loaded($ext) ? "✅ Loaded" : "❌ Not Found";
+    echo "<li>$ext: $status</li>";
+}
+echo "</ul>";
+
+echo "<hr>";
+echo "<p>If you see this, your Nginx → PHP-FPM bridge is working perfectly over HTTPS.</p>";
+?>