Previewing Themes & Stores

If you decide to alter your design, you may want to preview the new theme to see what your store would look like. To do so, navigate to Admin > Configuration > Themes and click on the Preview button of the desired theme. 

The front end of your store will now be shown in preview mode. When you are in preview mode, there is a little symbol displayed on the left side of the browser window. By clicking on it, you can switch the themes and stores of your shop within preview mode.