In this documentation, we can check how to add a new voucher theme in OpenCart.
1) Login to OpenCart admin panel.
2) Go to the tab ‘Sales’.
3) Go to Gift Vouchers >> Voucher Themes.
4) Click the button ‘Add New’.
5) Enter the voucher theme name and upload the image.
6) Click the button ‘Save’.
That is how we can add new voucher theme in OpenCart.
If you need any further help please contact our support department.