This simple module allows you to change the theme of a page with just a query string, using Theme Negotiator.

How to change the page theme:

  1. Install Theme Selector module using composer and enable it.
  2. Go to /admin/config/user-interface/theme-selector and add a Theme Selector.
  3. Select the Theme and the associated sufix.
  4. Using the query string ?theme-selector you'll be able to change the page theme.

Example:
https://example.com?theme-selector=bartik

Important note: Since this module uses a query parameter page cache is going to be disabled

Supporting organizations: 

Project information

Releases