Reply To: How to edit the ACF WYSIWYG block format options?

• janousek.mi

• December 20, 2021 at 8:14 am

You can use JS for this.

Here is how you can add JS:
https://www.advancedcustomfields.com/resources/adding-custom-javascript-fields/

And there is a JS filter for changing settings of tinymce (wysiwyg editor) before it’s initialized.
https://www.advancedcustomfields.com/resources/javascript-api/#filters-wysiwyg_tinymce_settings

And here is the final code. Just change ‘field_abcd123456’ to whatever is the key of your field.

add_action('acf/input/admin_footer', function(){
    ?>
    <script>

        acf.addFilter('wysiwyg_tinymce_settings', function( mceInit, id, field ){
            if(field.get('key') !== 'field_abcd123456'){
                return mceInit;
            }
            mceInit.block_formats = 'Paragraph=p;Heading 4=h4';
            return mceInit;
        });

    </script>
    <?php
});