A WhatsApp QR code opens a chat with your business number, optionally with a first message already written. Customers scan from a shop window, delivery box or table card and start a conversation without saving your number first. Enter the number in international format, add a starter message such as an order request, and download the PNG. The code is static and free, so you can print it on as many surfaces as you like.
No. This opens a chat with your number; it is not a device-linking code.
Country code plus number, with no leading zeros and no spaces needed, for example +447700900123.
The message is inside the code, so generate and print a new code to change it.