How can I change the font in the PDF?

You can change the font used for PDFs by adjusting the following TypoScript settings.Here, you need to specify the file names for the regular, italic, and bold font variants.

plugin.tx_shop.settings {
    pdf {
        font {
            normal = ubuntu_n.php
            italic = ubuntu_i.php
            bold = ubuntu_b.php
        }
    }
}

Please note that if you are using custom or converted fonts, you must also include their storage location in the font paths.