diff --git a/it4i_theme/header.html b/it4i_theme/header.html
index 564d0b8fbab2082a6e0bb399e2eff42d4ed9c51f..1fdddb6896706d1f164d4b3dd5ea45a35cb6d8e7 100644
--- a/it4i_theme/header.html
+++ b/it4i_theme/header.html
@@ -22,6 +22,9 @@
         {{ page_title | default(site_name, true) }}
       </div>
     </div>
+      <div class="button button-twitter" role="button" aria-label="Twitter">
+        <a href="all.pdf" title="DOWNLOAD PDF VERSION" target="_blank" class="toggle-button icon icon-twitter"></a>
+      </div>
       <div class="button button-github" role="button" aria-label="GitHub">
         <a href="https://gitlab.it4i.cz/kru0052/docs.it4i" title="on GitLab" target="_blank" ><img src="/img/git.png" width="30" height="30"></a>
       </div>