Start a chat in WhatsApp
Log in to your account, or register here if you do not have one, and follow these steps:
1) Click Create QR
2) Select WhatsApp
3) Enter a phone number with its country code and a message to send
4) Click Save to apply changes or Save and download to download the QR Code
Done! Here is an example of what the content would look like. Scan the QR Code to see it on your smartphone.
If you want to know how to customize the QR Code or how to download it, check the following articles: