This plugin adds a menu to the admin toolbar that allows individual users to preview different themes. It is designed for administrators and developers who need to test themes without changing the site's appearance for all visitors.

Individual Theme Switching: Each user's selected theme is saved in cookies, allowing personal previews that do not alter the site's active theme for others.

Multisite Compatibility: The menu only lists themes permitted for the current site within a multisite network, and selections are saved per site.

Capability Control: Access to the menu is managed by the switch_themes capability, typically for administrators, with filters available to customize permissions.

Theme List Filtering: Administrators can filter the list of available themes displayed in the menu using the tts_allowed_themes hook to exclude specific themes.

Cache Optimization: For sites with many themes, persistent caching of theme data can be enabled to improve performance during the menu generation process.