Allow customers to view, print and download as PDF, the receipt of their orders after payment.
The receipt addon has few settings and, thus, is easy to set up and get working.
As administrator of your website, you can always view and download the PDF receipt of any order from the admin order listing page.
My Account Page Integration
Your customers can view their order receipts from their My Account page, where they can print and download, as PDFs, their order receipts.