The 'Already Existing Tags' plugin for WordPress simplifies the process of managing tags in posts by automatically detecting and assigning existing tags during post creation or editing. This user-friendly tool allows for easy configuration, enabling users to choose whether to examine the title, content, or both for tag detection. Additionally, it offers flexibility in managing manually added tags, giving users the option to allow or block them as needed.

One of the standout features is the ability to activate a filter that specifies which categories the plugin will examine or ignore. This customization ensures that users can tailor the plugin's functionality to their specific needs. Furthermore, the clean uninstall option guarantees that no traces of the plugin remain after removal, making it a convenient choice for those looking to manage their WordPress tags efficiently.