admin_print_scripts-media-upload-popup WordPress Action Hook
The admin_print_scripts-media-upload-popup hook is used to print scripts and styles for the media upload popup. This hook is used to add custom scripts and styles to the media upload popup.
do_action( 'admin_print_scripts-media-upload-popup' ) #
Fires when admin scripts enqueued for the legacy (pre-3.5.0) media upload popup are printed.