Manoj

For creating a copy of posts and pages while retaining all the styling, content, title, meta info and taxonomies.
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In Posts/Pages screen, you can click on ‘Copy As New Draft’ link below the post/page title: this will immediately create a copy and return to the page.
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In Posts/Pages screen, you can click on ‘Edit As New Draft’ link below the post/page title: this will create a copy and redirect to edit the page.
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In Edit Posts/Edit Pages screen, you can click on ‘Edit As New Draft’ link above ‘Publish’ button: this will create a copy and redirect to edit the page.
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Please Note: No any kind of settings needed.

AMS Post And Page Duplicator

Rahul Kumar Singh

This plugin allows you to clone/duplicate posts of any post type, or copy them to new drafts for further editing.
This plugin was created to make an exact duplicate/copy of a selected post. Custom post types are supported, along with custom taxonomies and custom fields.
This plugin is simply used to quickly and easily duplicate a post. Just hover over a post in the edit screen and click on ‘Duplicate’ to create a duplicate post.

Quick Post Duplicator

Duplicate/Copy any and all post types, including taxonomies & custom fields with a click!

AMS Post And Page Duplicator vs Quick Post Duplicator