This plugin will show the page URL on Pages in WP Dashboard > All Pages
This will help you with SEO Keyword Page Mapping.
If you go to ‘Pages’ > ‘All Pages’, you will see a URL column showing the actual URL of
the page.
This helps with SEO. It can be done via a script in the functions.php file BUT every time you do a WP version update it overwrites the script.
Add this lightweight plugin and page mapping is a breeze.