The 'admin_head-{$hook_suffix}' action in WordPress allows developers to customize the head section of admin pages with CSS or JavaScript.

The 'admin_head-media-upload-popup' PHP action is a WordPress hook triggered during media upload popup display.

The 'admin_notices' action in WordPress is a powerful tool for displaying messages to users on the admin dashboard.

The 'admin_post_thumbnail_html' PHP filter allows developers to customize the HTML output of the post thumbnail box in the WordPress admin panel.

The 'admin_print_footer_scripts-{$hook_suffix}' action in WordPress adds code to the admin panel footer.

Adding stylesheets to WordPress admin pages with 'admin_print_styles-{$hook_suffix}' action.

The 'admin_print_styles-media-upload-popup' PHP action in WordPress allows developers to add custom styles to the media upload popup window.

​The article provides instructions on how to use the `add_tag_form_pre` WordPress action to add custom code before the "Add Tag" form is displayed, including examples of using it to display…

The 'activate_wp_head' PHP action in WordPress allows developers to add custom code to the head section of a website. This can be useful for adding meta tags, custom CSS, or…