The Improved Save Button plugin for WordPress enhances the post editing process by introducing a versatile 'Save' button on the Post Edit screen. This plugin allows users to perform multiple actions with a single click, including saving and creating new posts, duplicating existing posts, and navigating back to the post list. It is designed to save time, especially for those managing multiple posts, pages, or custom post types. Users can customize which actions are available and set a default action through the plugin’s settings page.

However, it's important to note that while the plugin is compatible with WordPress 5, it does not support the Gutenberg editor, which is the default for this version. Users will need to disable the Gutenberg editor to utilize this plugin effectively. The Improved Save Button plugin also integrates with the WordPress Translation Service, allowing for community translations.