“Quantity” to “Qty”

Hi @midshorediesel,

Yes, you can do it by filtering the headers using the following filter hook: wpo_wcpdf_simple_template_default_table_headers

Actually, I already wrote the code for you:

/**
 * PDF Invoices & Packing Slip for WooCommerce:
 * Customize the "Quantity" header on the PDF documents
 *
 * Note: You can also customize 'product' & 'price' the same way ;-)
 */
add_filter( 'wpo_wcpdf_simple_template_default_table_headers', function( $headers, $document ) {
	$headers['quantity'] = 'Qty';
	return $headers;
}, 10, 2 );

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

We also have a blog post here that you may find helpful about adding custom code to your site.