diff --git a/openseadragon.module b/openseadragon.module
index 161e42d..772e6bd 100644
--- a/openseadragon.module
+++ b/openseadragon.module
@@ -89,15 +89,44 @@ function template_preprocess_openseadragon_formatter(&$variables) {
     $variables['#attached']['library'] = [
       'openseadragon/init',
     ];
-    $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
-      'basePath' => Url::fromUri($iiif_address),
-      'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
-      'options' => [
-        'id' => $openseadragon_viewer_id,
-        'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
-        'tileSources' => $tile_sources,
-      ] + $viewer_settings,
-    ];
+    
+    // For dsu-utsc.
+    if (!empty(\Drupal::hasService('jwt.authentication.jwt'))) {
+      $jwtService = \Drupal::service('jwt.authentication.jwt');
+      $access_token = $jwtService->generateToken();
+      $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
+        'basePath' => Url::fromUri($iiif_address),
+        'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
+        'options' => [
+          'id' => $openseadragon_viewer_id,
+          'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
+          'tileSources' => $tile_sources,
+          
+          // For dsu-utsc.
+          'loadTilesWithAjax' => TRUE,
+          'ajaxWithCredentials' => TRUE,
+          'ajaxHeaders' => [
+            "Authorization" => "Bearer " . $access_token,
+            'token' => $access_token,
+          ],
+        ] + $viewer_settings,
+      ];
+      // Add cache metadata to limit the cache lifetime
+      $variables['#cache']['max-age'] = 3600; // 1 hour
+      $variables['#cache']['tags'][] = 'jwt_token'; // Add a cache tag to invalidate the cache when the token changes
+    }
+    else {
+      $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
+        'basePath' => Url::fromUri($iiif_address),
+        'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
+        'options' => [
+          'id' => $openseadragon_viewer_id,
+          'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
+          'tileSources' => $tile_sources,
+        ] + $viewer_settings,
+      ];
+    }
+    
 
     $variables['attributes']['class'] = $classes_array;
     $variables['attributes']['id'] = $openseadragon_viewer_id;
@@ -111,7 +140,7 @@ function template_preprocess_openseadragon_formatter(&$variables) {
  */
 function template_preprocess_openseadragon_iiif_manifest_block(&$variables) {
   $cache_meta = CacheableMetadata::createFromRenderArray($variables);
-
+  
   // Get the tile sources from the manifest.
   $parser = \Drupal::service('openseadragon.manifest_parser');
   $tile_sources = $parser->getTileSources($variables['iiif_manifest_url']);
@@ -141,15 +170,43 @@ function template_preprocess_openseadragon_iiif_manifest_block(&$variables) {
     $variables['#attached']['library'] = [
       'openseadragon/init',
     ];
-    $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
-      'basePath' => Url::fromUri($iiif_address),
-      'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
-      'options' => [
-        'id' => $openseadragon_viewer_id,
-        'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
-        'tileSources' => $tile_sources,
-      ] + $viewer_settings,
-    ];
+    if (!empty(\Drupal::hasService('jwt.authentication.jwt'))) {
+      $jwtService = \Drupal::service('jwt.authentication.jwt');
+      $access_token = $jwtService->generateToken();
+
+      $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
+        'basePath' => Url::fromUri($iiif_address),
+        'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
+        'options' => [
+          'id' => $openseadragon_viewer_id,
+          'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
+          'tileSources' => $tile_sources,
+          
+          // For dsu-utsc.
+          'loadTilesWithAjax' => TRUE,
+          'ajaxWithCredentials' => TRUE,
+          'ajaxHeaders' => [
+            "Authorization" => "Bearer " . $access_token,
+            'token' => $access_token,
+          ],
+        ] + $viewer_settings,
+      ];
+      // Add cache metadata to limit the cache lifetime
+      $variables['#cache']['max-age'] = 3600; // 1 hour
+      $variables['#cache']['tags'][] = 'jwt_token'; // Add a cache tag to invalidate the cache when the token changes
+    }
+    else {
+      $variables['#attached']['drupalSettings']['openseadragon'][$openseadragon_viewer_id] = [
+        'basePath' => Url::fromUri($iiif_address),
+        'fitToAspectRatio' => $viewer_settings['fit_to_aspect_ratio'],
+        'options' => [
+          'id' => $openseadragon_viewer_id,
+          'prefixUrl' => 'https://cdnjs.cloudflare.com/ajax/libs/openseadragon/2.4.2/images/',
+          'tileSources' => $tile_sources,
+        ] + $viewer_settings,
+      ];
+    }
+    
 
     $variables['attributes']['class'] = $classes_array;
     $variables['attributes']['id'] = $openseadragon_viewer_id;
diff --git a/src/IIIFManifestParser.php b/src/IIIFManifestParser.php
index fc98f6a..0765bdf 100644
--- a/src/IIIFManifestParser.php
+++ b/src/IIIFManifestParser.php
@@ -68,7 +68,7 @@ class IIIFManifestParser {
    * @return array
    *   The URLs of all the tile sources in a manifest.
    */
-  public function getTileSources($manifest_url) {
+  public function getTileSources($manifest_url, $access_token = NULL) {
 
     // Try to construct the URL out of a tokenized string
     // if the node is available.
@@ -85,7 +85,12 @@ class IIIFManifestParser {
 
     try {
       // Request the manifest.
-      $manifest_response = $this->httpClient->get($manifest_url);
+      #$manifest_response = $this->httpClient->get($manifest_url);
+      $manifest_response = $this->httpClient->request('GET', $manifest_url, [
+        'headers' => [
+          'Authorization' => 'Bearer ' . $access_token,
+        ],
+      ]);
 
       // Decode the manifest json.
       $manifest_string = (string) $manifest_response->getBody();