Just TinyMCE Custom Styles is a WordPress plugin designed to enhance the WYSIWYG editor by allowing users to add custom formatting options easily. This plugin provides a user-friendly interface to control the TinyMCE 'style_formats' parameter, enabling the addition of custom styles for various HTML elements. Key features include the ability to load settings from a database or a JSON file, enable or disable specific style formats for cleaner formatting, and apply custom CSS for each formatting rule individually.

The plugin also offers a convenient way to group styles for better organization and includes a Bootstrap preset, which provides predefined styles from one of the most popular CSS frameworks. Users can import these presets with a single click, making it easy to enhance the visual appeal of content created within the editor. This functionality is ideal for users looking to streamline their document management and improve productivity on their WordPress sites.