I want to remove some metaboxes, that was added to page edit.php by thridparty plugins. I insert this code into functions.php: function vpm_remove_meta_box() { remove_meta_box( ‘ortext-metabox’, ‘post’, ‘normal’ ); remove_meta_box( ‘ez-toc’, ‘post’, ‘normal’ ); } add_action( ‘add_meta_boxes’, ‘vpm_remove_meta_box’ ); But, it don’t working. I found that plugins register this metaboxes with function: add_meta_box(‘ortext-metabox’, OrTextBase::NAME_SERVIC_ORIGINAL_TEXT, array($Read more