Change template without child theme

Hi @lencw:

You can achieve this with a code snippet, as described in the documentation: Custom PDF filenames.

For your specific case, you can use this code snippet:

/**
 * PDF Invoices & Packing Slips for WooCommerce:
 * Customize the invoice title
 */ 
add_filter( 'wpo_wcpdf_invoice_title', function( $title, $document ) {
    $title = 'Order confirmation';
    return $title;
}, 10, 2 );

If you haven’t worked with code snippets (actions/filters) or functions.php before, read this guide: How to use filters

Alternatively, with the Professional extension, you can do this right in the documents’ settings (it is available for all them):

Thanks for confirming that it is what you wanted, @lencw 🙂

If you don’t mind and have the time, do you think you could leave us a review?

Thanks in advance and all the best with your store!

Yes, there is! You can achieve it with this code snippet:

/**
 * PDF Invoices & Packing Slips for WooCommerce:
 * Customize the PDF invoice filename to 'order-confirmation-{$invoice_number}.pdf';
 */
add_filter( 'wpo_wcpdf_filename', function( $filename, $template_type, $order_ids, $context ) {
    $invoice_string = _n( 'invoice', 'invoices', count( $order_ids ), 'woocommerce-pdf-invoices-packing-slips' );
    $new_prefix = _n( 'order-confirmation', 'order-confirmations', count( $order_ids ), 'woocommerce-pdf-invoices-packing-slips' );
    $new_filename = str_replace( $invoice_string, $new_prefix, $filename );
 
    return $new_filename;
}, 10, 4 );