Hide Admin Notices From Non-Administrators
Removes plugin and theme notices, update nags and promotions from the admin for everyone who is not an administrator.
Snippet Library
Disable Features snippets for WordPress
Snippets that switch off WordPress features you do not use: comments, the block editor, RSS feeds, automatic updates, attachment pages and more. One snippet per feature, so you turn off exactly what you want and nothing else.
Prevent Switching Themes
Stops anyone, administrators included, from activating a different theme, so a client cannot change the site design by accident.