Are you looking for a way to display the current post ID? While there’s probably a plugin for this, we have created a quick code snippet that you can use to get post ID in WordPress.
All you have to do is add this code to your theme’s single.php file or where you want to display the post ID or in a site-specific plugin:
<?php the_ID(); ?>
Note: If this is your first time adding code snippets in WordPress, then please refer to our guide on how to properly add code snippets in WordPress, so you don’t accidentally break your site.