This method adds a 'Duplicate' link to the admin list for posts and pages, allowing you to create an exact copy with a single click. It is designed for site administrators and content creators who regularly produce similar content and want to save time on repetitive setup.

• One-Click Duplication: Adds a 'Duplicate' action link next to each item in the posts and pages list view. Clicking it instantly creates a copy.
• Preserves All Data: The copy retains the original post's title, content, excerpt, categories, tags, custom fields, and other metadata, eliminating manual re-entry.
• Saves as Draft: By default, the duplicated item is created as a draft, giving you full control over when and how to publish the new version.
• Custom Post Type Support: The provided code can be adapted to work with custom post types, extending its utility beyond standard posts and pages.
• No External Plugin: Implement this functionality directly into your theme's functions.php file or as a simple custom plugin, reducing dependency on third-party add-ons.