diff --git a/index.php b/index.php
index 1e51db4..106aad1 100644
--- a/index.php
+++ b/index.php
@@ -40,6 +40,8 @@ $routes = [
     '/post/([a-zA-Z0-9]{7})' => 'post.php', // matches only twtHash of exactly 7 alphanumeric characters
     '/upload' => 'upload_img.php',
     '/webmention' => 'webmention_endpoint.php',
+
+    '/admin/config-checker' => 'admin/config_checker.php',
     //'/thumb' => 'thumb.php',
     //'/profile/([a-zA-Z0-9_-]+)' => 'profile.php',
 
diff --git a/views/admin/config_checker.php b/views/admin/config_checker.php
new file mode 100644
index 0000000..533fd5b
--- /dev/null
+++ b/views/admin/config_checker.php
@@ -0,0 +1,42 @@
+<?php
+
+function validateConfig($configFile, $templateFile) {
+    $config = parse_ini_file($configFile);
+    $template = parse_ini_file($templateFile);
+
+    $configKeys = array_keys($config);
+    $templateKeys = array_keys($template);
+
+    $missingKeys = array_diff($templateKeys, $configKeys);
+    $extraKeys = array_diff($configKeys, $templateKeys);
+
+    $configIsCorrect = true;
+    if (!empty($missingKeys)) {
+        echo "Missing keys: " . implode(', ', $missingKeys) . "\n";
+        $configIsCorrect = false;
+    }
+
+    if (!empty($extraKeys)) {
+        echo "Extra keys: " . implode(', ', $extraKeys) . "\n";
+        $configIsCorrect = false;
+    }
+    
+    if ($configIsCorrect) {
+        echo "Config file $configFile looks OK.\n";
+    }
+}
+
+$configFile = 'private/config.ini';
+$templateFile = 'private/config_template.ini';
+
+if (!file_exists($configFile)) {
+    echo "Config file $configFile not found.\n";
+    exit;
+}
+
+if (!file_exists($templateFile)) {
+    echo "Template file $templateFile not found.\n";
+    exit;
+}
+
+validateConfig($configFile, $templateFile);
\ No newline at end of file