diff --git a/src/Service/UWService.php b/src/Service/UWService.php
index 4f2aa82de084cfd701f8b3e1fc960dbcdf751720..7e6a4bb38fce10e58eba634b281f9eb403a22ef5 100644
--- a/src/Service/UWService.php
+++ b/src/Service/UWService.php
@@ -594,4 +594,20 @@ class UWService implements UWServiceInterface {
     return $list;
   }
 
+  /**
+   * {@inheritDoc}
+   */
+  public function validExternalUrl(string $url): bool {
+
+    // Get the headers of the URL.
+    $headers = @get_headers($url);
+
+    // Use condition to check if there is no URL.
+    if ($headers && strpos($headers[0], '404')) {
+      return FALSE;
+    }
+
+    return TRUE;
+  }
+
 }
diff --git a/src/Service/UWServiceInterface.php b/src/Service/UWServiceInterface.php
index 1311d7f9ed1bd64d28db4df41ac923db1349f19d..b8eaee2752cf3342a0740c06586e7c97ddd63106 100644
--- a/src/Service/UWServiceInterface.php
+++ b/src/Service/UWServiceInterface.php
@@ -211,4 +211,15 @@ interface UWServiceInterface {
    */
   public function getContentTypeUsage(array $content_types, bool $show_null_content_types): array;
 
+  /**
+   * Function to check if an external url is valid.
+   *
+   * @param string $url
+   *   The URL to be checked.
+   *
+   * @return bool
+   *   Whether url is valid or not.
+   */
+  public function validExternalUrl(string $url): bool;
+
 }