# Reusable components

You can easily reuse Photo Sphere Viewer internal components from your custom navbar buttons, from plugins, or from wherever in your application.

The reusables components are:

  • panel: display HTML content on a sidebar on the left of the viewer
  • notification: display a small message above the navbar
  • overlay: display a message with an illustration on top of the viewer
  • tooltip: add custom tooltips over the viewer