Funny enough, I’m currently adding e-invoice support to my open-source invoice generator.

Github: https://github.com/VladSez/easy-invoice-pdf

App: https://easyinvoicepdf.com/?template=stripe

I’m planning to use this package to generate e-invoice: https://github.com/gflohr/e-invoice-eu

UPD: issue to follow the progress https://github.com/VladSez/easy-invoice-pdf/issues/121

If you have any feedback or suggestions please feel free to reach out to me :)

Thanks. I was about to write something of mine own, but if there is something already for e-invoicing, then maybe it is even easier to implement.