Instead of choosing one of the four layouts, my idea (or the idea of other invoicing programs) would be to save a PDF document as letterhead. This could be easily designed in Word or similar software with a logo, header, and footer, and then saved as a PDF. It would look something like this:
Then you can leave the static form fields blank and have your own design.
The text printed by SubTotal would then be the date, number, items/prices, individual customer data, address, and the title “INVOICE.”
As far as I know, most PDF libraries can easily implement this “Layer 0” function as a background. Wouldn't that be an idea? 💡
I would offer the letterhead PDF for upload under “My Company,” similar to the logo, and provide two form fields for the necessary spacing of the header and footer.
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