Get the route name of the current page The route name of the current page is available in page.html.twig?
The page is generated by the default feedback form.
To get the current route name, use:

$route_name = \Drupal::routeMatch()-&gt;getRouteName();


You can add the current page's route name as a variable in your theme's ".theme" file.  Add a _preprocess_page function like this, and clear the drupal cache.

/**
 * Implements hook_preprocess_page().
 *
 */
function mytheme_preprocess_page(&amp;$variables) {
  $variables['route_name'] = \Drupal::routeMatch()-&gt;getRouteName();
}


Then you can access in page.html.twig like this:

{{ route_name }}


Note: \Drupal::routeMatch()-&gt;getRouteName() will sometimes return null. 

If you are inside a class, to do things properly, you'll want to inject the route match service in the constructor and then call it this way:

$this-&gt;currentRouteMatch-&gt;getRouteName()


The constructor (and variable) will be like this:

  /**
   * The current route match.
   *
   * @var \Drupal\Core\Routing\RouteMatchInterface
   */
  protected $currentRouteMatch;

  /**
   * Constructs a new ThemeTestSubscriber.
   *
   * @param \Drupal\Core\Routing\RouteMatchInterface $current_route_match
   */
  public function __construct(RouteMatchInterface $current_route_match) {
    $this-&gt;currentRouteMatch = $current_route_match;
  }


If it's a service class, you'd then pass it into the service in the yaml file in your custom module:

services:
  mymodule.service:
    class: Drupal\mymodule\MyCustomService
    arguments: ['@current_route_match']