EDD PDF Vouchers - Change PDF Font

edd-vou-pdf-generate-fonts.php

<?php

function edd_vou_pdf_modify_generate_fonts( $pdf_font ) {
  
  // by default the font type is "helvetica"
  //Remember : The font should be in tcpdf folder ( edd-pdf-vouchers/includes/tcpdf/fonts )
  $pdf_font = 'freeserif';
  
  return $pdf_font;
}
add_filter( 'edd_vou_pdf_generate_fonts', 'edd_vou_pdf_modify_generate_fonts' );