[GlasPak]

Originally Posted by qualiteam

You can debug printable pages in this way:
https://stackoverflow.com/questions/9540990

As far as I see, here is the selector that replaces the font size in printable invoices:
.invoice-box .addresses .address-section li.address-field *

It is in skins/common/order/invoice/common.less

Thanks for the reply.

  .invoice-box .addresses .address .method-box,
  .invoice-box .addresses .address-section li.address-field * {
    font-size: 10px;
    line-height: initial;
  }

Well that explains a lot now.. Why would you set the print font size to 10px?!?

the suggestion for rendering as print doesn't work because x-cart generates the print invoice as a pdf and when i tried the render print option it just renders the admin.php page and doesn't generate the actual print document... So using ?target=order&order_number=5632&mode=invoice to find the css I need to edit and then editing, uploading, clearing cache and regenerating the print invoice to see the changes.