Good plugin

I’m using the plugin and am happy enough with it.

I recommend making the following changes though.

Firstly, it’s issuing some error messages:
“Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in /usr/share/nginx/html/wp-includes/functions.php on line 3495”

I was concerned that might trigger problems on the front-end, so I used if (is_admin() ) {} to require the main plugin file content. This also has the bonus of meaning that the majority of the plugin code is not loaded unless in the main page.

I also think you could make this plugin without an admin page at all. I think it would be best to process all links by default and have an extension plugin for those who may want to do something specific. There could be a simple link from another admin page or from the plugin page to allow people to do the bulk processing. That’s only a once off event, so having a dedicated button in the admin panel for it seems excessive to me.

If you fix some of those, let me know and I’ll bump my rating up to five stars.