Hook name: install_plugins_upload Hook type: action Plugin ref: WordPress Sourcefile: File ref: wp-admin/plugin-install.php Description: Fires before each tab on the Install Plugins screen is loaded. The dynamic portion of the action hook, `$tab`, allows for targeting individual tabs, for instance ‘install_plugins_pre_plugin-information’. Parameters: Deprecated?: No API Letters: I,P,U Invokers 1 to 1 of 1 wp-admin/plugin-install.php Implementers