WhatsApp Web QR Code: Scan, Fix and Stay Connected (2026)

Overview: The WhatsApp Web QR code is a one-time scan that links your phone to a browser session on your computer. It expires every 60 seconds, appears automatically when you open web.whatsapp.com, and takes under 30 seconds to scan. This guide covers the exact steps for Android and iPhone, how to scan the QR code for Companion Mode on a second phone, the passkey login alternative that skips the QR scan entirely, and how to fix the most common scanning failures.

For businesses running outbound WhatsApp campaigns from the browser, a WhatsApp bulk message sender free tool handles those sends after the QR scan connects your account.

The WhatsApp Web QR code is a unique, encrypted code generated automatically when you open web.whatsapp.com or WhatsApp Desktop. Scanning it with your phone's WhatsApp app creates a secure, authenticated session between your phone and the browser or desktop app.

The QR code is temporary and unique to each session. It refreshes every 60 seconds for security, if you do not scan in time, a new one generates automatically. Each scan links that specific browser session to your WhatsApp account. You can have up to 4 linked devices active at any time.

The session is end-to-end encrypted. All messages that appear in the browser are synced from your phone, the browser shows the same conversations, not a separate inbox.

Also Read: WhatsApp Business Auto Reply: 30 Ready-to-Use Message Samples (2026)

• On your computer, open web.whatsapp.com in any browser. A QR code appears on screen.
• On your Android phone, open WhatsApp.
• Tap the three-dot menu (top right corner).
• Tap Linked Devices.
• Tap Link a Device.
• WhatsApp may prompt you to authenticate with fingerprint or PIN, confirm it.
• Your phone camera opens. Point it at the QR code on your computer screen.
• Keep the phone steady and the QR code fully in the camera frame. The scan completes automatically in 1 to 2 seconds.
• WhatsApp Web loads with your chats. The session stays active until you log out or the device is idle for an extended period.

For session management - keeping sessions alive, seeing which devices are connected, and logging out remotely, the WhatsApp Web login guide covers the full login and session lifecycle.

• On your computer, open web.whatsapp.com. A QR code appears on screen.
• On your iPhone, open WhatsApp.
• Tap Settings in the bottom right corner.
• Tap Linked Devices.
• Tap Link a Device.
• WhatsApp prompts you to authenticate with Face ID or device passcode.
• Your camera opens. Point the iPhone camera at the QR code on the computer screen.
• The scan completes automatically. WhatsApp Web opens with your chats.

Also Read: How to Send Bulk Event Invitations on WhatsApp (2026)

WhatsApp Desktop is a standalone app for Windows and Mac that works the same way as WhatsApp Web. The QR code appears when you open the app on a new device or after logging out.

• Install WhatsApp Desktop from the Microsoft Store (Windows) or Mac App Store (Mac) and open it.
• A QR code appears on the welcome screen.
• On your phone, open WhatsApp > Linked Devices > Link a Device.
• Scan the QR code shown in the desktop app window.
• The desktop app connects and loads your chats.

WhatsApp Desktop works independently from WhatsApp Web, they are separate sessions and count as separate linked devices.

WhatsApp introduced Passkey login in 2024 as an alternative to QR code scanning. It allows you to log in to WhatsApp Web using your phone's biometric authentication (fingerprint or Face ID) without needing to scan a QR code at all.

How it works:

• Open web.whatsapp.com on your computer.
• Below the QR code, look for a "Log in with Passkey" or "Use Passkey" option.
• Click it. Your computer shows a prompt to authenticate using your phone.
• On your phone, WhatsApp sends a notification or your phone's biometric system activates.
• Authenticate with your fingerprint or Face ID.
• WhatsApp Web logs in automatically, no camera, no QR scanning.

Also Read: WhatsApp Message Not Delivered: Causes and Fixes (2026)

Companion Mode is a different use of QR scanning, it links a second phone to your existing WhatsApp account, so both phones run the same account simultaneously. This is not the same as WhatsApp Web.

• On the companion (second) phone, download WhatsApp and open it.
• On the welcome screen (Android): tap the three-dot menu > Link to Existing Account. A QR code appears on the companion phone.
• On the welcome screen (iPhone): tap "Or link this device to an existing account." A QR code appears.
• On your primary phone: open WhatsApp > Linked Devices > Link a Device.
• Authenticate if prompted.
• Scan the QR code shown on the companion phone screen using your primary phone's camera.
• The companion phone syncs your chats and is ready to use.

The complete guide for using the same WhatsApp account on two phones, including what each phone can and cannot do, the 14-day inactivity rule, and how to remove a linked phone, is covered in how to use WhatsApp on two phones with the same number.

WhatsApp Web QR codes expire every 60 seconds. If you take too long to scan, the code goes stale and shows a circular reload icon.

Fix: Click the circular reload/refresh icon on the QR code screen. A new QR code generates immediately. Scan the new code. The process starts over from scratch, no other steps needed.

Why codes expire: The short expiry time is a security feature. A permanent QR code could be screenshot and used later to link an unauthorized device to your account. The 60-second window ensures the scan happens in real time, making unauthorized remote linking impossible.

Also Read: How to Enable Voice Typing in WhatsApp: Android and iPhone

Never scan the WhatsApp Web QR code on a public or shared computer without logging out when done. Anyone who sits at that computer after you can access your WhatsApp account if the session stays active.

Always check "Keep me signed in": When you scan the QR code, a "Keep me signed in" checkbox may appear. On a personal computer: tick it. On a shared or public computer: leave it unticked. The unticked option logs out the session automatically when the browser closes.

Log out remotely from your phone: If you forget to log out: open WhatsApp on your phone > Settings > Linked Devices. You can see all active sessions including the browser that is still logged in, and tap Log Out next to it from anywhere.

WhatsApp Web is end-to-end encrypted: The session between your phone and the browser is encrypted. However, once the browser is open and connected, anyone with physical access to the computer can read your messages. The encryption protects data in transit, not the browser session itself.

Camera not scanning: Grant WhatsApp camera permission (Settings > Apps > WhatsApp > Permissions > Camera). A dirty camera lens can also prevent scanning, wipe it with a clean cloth.

QR code appears but scanning fails: Increase the brightness on your computer screen. The camera needs sufficient contrast to read the code. Reduce ambient glare by tilting the screen or adjusting room lighting. Keep 20 to 30 cm distance from the screen.

WhatsApp Web loads but goes blank or disconnects: Your phone and computer must both have active internet connections. If your phone's mobile data is weak, the session will drop. Connect your phone to Wi-Fi for a more stable session.

The scan succeeds but chats are not loading: Refresh the WhatsApp Web page (Ctrl+R on Windows, Cmd+R on Mac). If it continues, log out from Linked Devices on your phone, close the browser, and scan again.

WhatsApp says "Maximum devices linked": WhatsApp allows a maximum of 4 companion devices at once. Go to WhatsApp > Linked Devices, remove a session you no longer use, and then scan the QR code again.

QR code not appearing at web.whatsapp.com: Try a different browser (Chrome, Edge, Firefox, Safari). Clear your browser cache and cookies. Disable any browser extensions that might block WhatsApp Web (VPNs and privacy extensions sometimes cause this).

WhatsApp app cannot find the Linked Devices option: Update WhatsApp to the latest version. On very old versions, the Linked Devices path was in a different menu. The current path is: three-dot menu > Linked Devices (Android) or Settings > Linked Devices (iPhone).

Scanning the WhatsApp Web QR code is a 30-second process: open web.whatsapp.com, go to Linked Devices on your phone, open the camera, and scan. Android users access this via the three-dot menu; iPhone users via Settings. If the QR code expires, click the reload icon for a new one. If you prefer to skip the camera scan entirely, Passkey login does the same job using your phone's biometric authentication.

For Companion Mode on a second phone, the process is different, the QR code appears on the companion phone and you scan it with your primary phone. For shared computers, always untick "Keep me signed in" and log out via Linked Devices on your phone when done.

For businesses running WhatsApp outbound campaigns after connecting via QR code, Roklo is a free bulk message sender that handles how to send bulk WhatsApp messages from your browser session, no API, no saved contacts, no per-message charge.

Also Read: WhatsApp Business for Restaurants: Complete Guide (2026)