Post/Page Preview Template

Question

Is there a way to have a custom template php file that is only used for previews instead of it using the single.php file? This way the user knows they are in preview mode?

Answer 1

You could use the conditional is_preview() to add a bit of extra content.

For instance, you could put this at the very top of your single.php right after the header is called - or you could put it in your header.php file if you want it shown at the very top of the page:

<?php 
if ( is_preview() ) { ?>
     <div>You're viewing a preview</div>
<?php } ?>

Hope this helps, best of luck!