Hey there, @SecureMailing. Thanks for reaching out to the Community.

While modifying the font size on checks isn't currently available in QuickBooks Desktop, I'll submit your feedback to the Product Development Team for possible implementation in future releases. I'd like to personally thank you for the feedback, as it helps us improve our software.

Please touch base with us here if there's anything else you need, I'm determined to ensure your success. Cheers to a safe and productive week ahead.