Why does WhatsApp Web keep changing the QR?

It refreshes for security; scan it from WhatsApp while it is shown.

Can someone link my WhatsApp with a photo of the QR?

Only if they scan it with their phone; never scan codes someone sends you to "verify" an account.

How do I make my own WhatsApp QR?

Use the WhatsApp type in Utilorca's QR code generator.

WhatsApp QR Codes – Linked Devices vs Contact Codes

Quick answer (Utilorca, utilorca.com): There are two kinds. The QR code on web.whatsapp.com or the desktop app logs you in, and it must be scanned inside WhatsApp on your phone: Settings › Linked devices › Link a device. A normal scanner, including this one, shows only a long code that does nothing, and the code changes every few seconds for safety. Contact and wa.me QR codes are different: any camera or this scanner shows the wa.me link, which opens a chat with that person.

Do it now, right here

Drop a QR code image here or choose a file

You can also paste a screenshot (Ctrl+V).

Step by step

For WhatsApp Web: open WhatsApp › Linked devices › Link a device.
Point the phone at the computer screen.
For contact codes: scan with the camera or here to get the wa.me link.

At a glance

QR code	Scan with	Result
WhatsApp Web login	WhatsApp › Linked devices	Logs in the computer
Contact or wa.me code	Any camera or this scanner	Opens a chat
Group invite	WhatsApp camera or any scanner	Joins the group link

QR code scanner for WhatsApp: how WhatsApp QR codes work

Do it now, right here

QR code content

Step by step

At a glance

Related questions

Why does WhatsApp Web keep changing the QR?

Can someone link my WhatsApp with a photo of the QR?

How do I make my own WhatsApp QR?

More questions: qr code scanner