This plugin is the duplicate posts, pages and custom post types easily using single click. You can duplicate your pages, posts and custom post by just one click and It will be duplicated as a draft.
This screen shot description corresponds to screenshot-1.(png|jpg|jpeg|gif). Note that the screenshot is taken from
the /assets directory or the directory that contains the stable readme.txt (tags or trunk). Screenshots in the /assets
directory take precedence. For example,
/assets/screenshot-1.pngwould win over
(or jpg, jpeg, gif).