Once you have made a change to the website's theme, it is possible to see a preview of how your change affects the website's look and feel. Simply click the Preview button at the top of the Themes screen to see a real-time preview of how the website will look. The preview will open up in a separate browser window. You can interact with elements on the screen (including any widgets, images, hyperlinks etc.)
NOTE: You can do everything in the preview (including registering customers, searching products etc.) except to check out customers (completing the sale).
When you are finished previewing the site, click the web browser's close button.
For example, if you select an image file for the Logo, click the Preview button to see how the logo appears on your ecommerce website. If something needs to change (e.g. you selected the wrong logo image file), close the preview, select the proper image file and then click Preview again to see if the change is satisfactory.
If you are not satisfied with what you are seeing in the preview, you can close it, make the necessary changes and preview again before publishing. There is no limit to the amount of times you can preview and change a theme before publishing.
Managing Ecommerce Website Themes