Challenge & Fix
This is a lightweight URL scanner plugin for WordPress. There are dozens of use cases for a URL scanner like this. The issue I had and used this plugin to resolve was that after I finished building out a WordPress site, I found there were still some theme demo links embedded into various elements on a couple of pages that were kind of elusive in the way the theme demo URLs were inserted into the page. For example, a theme demo link could be inside a tiny chevron icon that you might easily overlook.
So, I needed an effective way to scan all the pages using the theme demo name URL as the query to search all the pages and give me a list of all the pages and the links embedded in them.