WhatsApp QR code generator
https://wa.me/?text=
Builds a `wa.me` link and encodes it. Scanning opens WhatsApp with a chat to your number and an optional message already typed but not sent.
How to make a whatsapp qr code
The number format is the thing that goes wrong: wa.me wants the full international number with no plus sign, no spaces, no dashes and no leading zero. A Dutch mobile written 06 12 34 56 78 becomes 31612345678. Get that wrong and the link opens WhatsApp with an error rather than a chat. Worth knowing that the message is pre-filled and not sent; the person still taps send, which is what makes this useful for support and ordering flows rather than intrusive. This works for any WhatsApp account; it does not require a Business account.
Questions
Country code and number, digits only. No plus, no spaces, no leading zero; 31612345678, not 06 12 34 56 78.
No. It is pre-filled in the chat box and the person taps send themselves.
No, this works with any account.
No. The data is encoded in the pattern itself, so there is no redirect to go down and no account to lapse. A printed code works for as long as the paper lasts.
Only if that number is registered with WhatsApp.