diff --git a/simple_sitemap.routing.yml b/simple_sitemap.routing.yml
index 7c1da48..c42c31a 100644
--- a/simple_sitemap.routing.yml
+++ b/simple_sitemap.routing.yml
@@ -26,6 +26,14 @@ simple_sitemap.chunk:
   requirements:
     _access: 'TRUE'
 
+simple_sitemap.sitemap_xsl:
+  path: '/sitemap.xsl'
+  defaults:
+    _controller: '\Drupal\simple_sitemap\Controller\SimplesitemapController::renderSitemapXsl'
+    _title: 'Sitemap XSL'
+  requirements:
+    _access: 'TRUE'
+
 simple_sitemap.settings:
   path: '/admin/config/search/simplesitemap'
   defaults:
diff --git a/src/Controller/SimplesitemapController.php b/src/Controller/SimplesitemapController.php
index 0e6d371..b6fa22a 100644
--- a/src/Controller/SimplesitemapController.php
+++ b/src/Controller/SimplesitemapController.php
@@ -78,4 +78,39 @@ class SimplesitemapController extends ControllerBase {
 
     return $response;
   }
+
+  /**
+   * Provides the sitemap in XSL format.
+   *
+   * @return \Symfony\Component\HttpFoundation\Response
+   *   Response object in XSL format.
+   */
+  public function renderSitemapXsl() {
+    // Read the XSL content from the file.
+    $module_path = drupal_get_path('module', 'simple_sitemap');
+    $xsl_content = file_get_contents($module_path . '/xsl/simple_sitemap.xsl');
+
+    // Make sure the strings in the XSL content are translated properly.
+    $replacements = [
+      'Sitemap file' => t('Sitemap file'),
+      'Generated by the <a href="http://drupal.org/project/simple_sitemap">Drupal Simple XML sitemap module</a>.' => t('Generated by the <a href="@link-simple_sitemap">Drupal Simple XML sitemap module</a>.', array('@link-simple_sitemap' => 'http://drupal.org/project/simple_sitemap')),
+      'Number of sitemaps in this index' => t('Number of sitemaps in this index'),
+      'Click on the table headers to change sorting.' => t('Click on the table headers to change sorting.'),
+      'Sitemap URL' => t('Sitemap URL'),
+      'Last modification date' => t('Last modification date'),
+      'Number of URLs in this sitemap' => t('Number of URLs in this sitemap'),
+      'URL location' => t('URL location'),
+      'Translation set' => t('Translation set'),
+      'Priority' => t('Priority'),
+      '[xsl-css]' => base_path() . $module_path . '/xsl/simple_sitemap.xsl.css',
+    ];
+    $xsl_content = strtr($xsl_content, $replacements);
+
+    // Output the XSL content.
+    $response = new Response($xsl_content);
+    $response->headers->set('Content-type', 'application/xml; charset=utf-8');
+    $response->headers->set('X-Robots-Tag', 'noindex, follow');
+    return $response;
+  }
+
 }
diff --git a/src/SitemapGenerator.php b/src/SitemapGenerator.php
index aac9cb9..ddc412d 100644
--- a/src/SitemapGenerator.php
+++ b/src/SitemapGenerator.php
@@ -65,7 +65,7 @@ class SitemapGenerator {
    * @var array
    */
   protected static $attributes = [
-    'xmlns' => self::XMLNS,
+    'xmlns:sitemap' => self::XMLNS,
     'xmlns:xhtml' => self::XMLNS_XHTML,
     'xmlns:image' => self::XMLNS_IMAGE,
   ];
@@ -156,6 +156,7 @@ class SitemapGenerator {
     $this->writer->openMemory();
     $this->writer->setIndent(TRUE);
     $this->writer->startDocument(self::XML_VERSION, self::ENCODING);
+    $this->writer->writePI('xml-stylesheet', 'type="text/xsl" href="' . $GLOBALS['base_url'] . '/sitemap.xsl"');
     $this->writer->writeComment(self::GENERATED_BY);
     $this->writer->startElement('sitemapindex');
 
@@ -200,6 +201,7 @@ class SitemapGenerator {
     $this->writer->openMemory();
     $this->writer->setIndent(TRUE);
     $this->writer->startDocument(self::XML_VERSION, self::ENCODING);
+    $this->writer->writePI('xml-stylesheet', 'type="text/xsl" href="' . $GLOBALS['base_url'] . '/sitemap.xsl"');
     $this->writer->writeComment(self::GENERATED_BY);
     $this->writer->startElement('urlset');