diff --git a/core/modules/rest/src/Plugin/views/display/RestExport.php b/core/modules/rest/src/Plugin/views/display/RestExport.php
index b251a440d1..4e79194ebb 100644
--- a/core/modules/rest/src/Plugin/views/display/RestExport.php
+++ b/core/modules/rest/src/Plugin/views/display/RestExport.php
@@ -141,6 +141,8 @@ public function initDisplay(ViewExecutable $view, array &$display, array &$optio
 
     $request_content_type = $this->view->getRequest()->getRequestFormat();
 
+    // This allows still falling back to the default for things like views
+    // preview.
     if ($request_content_type !== 'html') {
       $this->setContentType($request_content_type);
       $this->setMimeType($this->view->getRequest()->getMimeType($request_content_type));
@@ -321,10 +323,17 @@ public function collectRoutes(RouteCollection $collection) {
       // REST exports should only respond to GET methods.
       $route->setMethods(['GET']);
 
-      // Format as a string using pipes as a delimiter.
-      if ($formats = $style_plugin->getFormats()) {
-        $route->setRequirement('_format', implode('|', $formats));
+      $formats = $style_plugin->getFormats();
+
+      // If there are no configured formats, add all formats that the serializer
+      // style plugin supports.
+      if (!$formats) {
+        $formats = $style_plugin->getFormatOptions();
       }
+
+      // Format as a string using pipes as a delimiter.
+      $route->setRequirement('_format', implode('|', $formats));
+
       // Add authentication to the route if it was set. If no authentication was
       // set, the default authentication will be used, which is cookie based by
       // default.
diff --git a/core/modules/rest/src/Plugin/views/style/Serializer.php b/core/modules/rest/src/Plugin/views/style/Serializer.php
index 7e9b4331ef..c58ec32419 100644
--- a/core/modules/rest/src/Plugin/views/style/Serializer.php
+++ b/core/modules/rest/src/Plugin/views/style/Serializer.php
@@ -197,7 +197,7 @@ public function calculateDependencies() {
    * @return string[]
    *   An array of format options. Both key and value are the same.
    */
-  protected function getFormatOptions() {
+  public function getFormatOptions() {
     $formats = array_keys($this->formatProviders);
     return array_combine($formats, $formats);
   }