Use the built-in print option
Create your QR, choose A4 or A5 under Print for shop, then use your browser’s Print or Save as PDF option. The sign includes the name, UPI ID, QR, and a simple scan instruction.
Choose a clear physical size
A QR needs a clean, uncut white area around it. Do not let a printer automatically crop it. Black-and-white printing is fine when the dark squares remain dark and the white area stays clean.
For a local print shop
Select Download SVG when you only need the QR itself. SVG stays sharp when a printer places it into a poster or menu. Give the printed result a real scan test before display.