Home Forums Backend Issues (wp-admin) Resrict valid formats in WYSIWYG editor Reply To: Resrict valid formats in WYSIWYG editor

  • Dear all,

    After sleeping some nights over this issue, I looked again at the acf JS code and suddenly found the wysiwyg_tinymce_settings filter. This helped me to modify the input fo the tinymce.init() call. My solution is:

    function my_acf_input_admin_footer() {
        <script type="text/javascript">
            acf.add_filter('wysiwyg_tinymce_settings', function( mceInit, id, $field ){
                mceInit.valid_elements = 'p,strong,em,del,span[style="text-decoration: underline;"]';
                return mceInit;
    add_action('acf/input/admin_footer', 'my_acf_input_admin_footer');

    This restricts the editor to only use b, i, del and underlining.

    Now I’m happy again 🙂