Lock My Profile

How to lock WhatsApp Web with a password

Updated: November 10, 2026

Short answer: add web.whatsapp.com as a protected site in Lock My Profile. WhatsApp Web will ask for your password every time it opens, and lock again when you switch tabs, without logging you out.

Why lock WhatsApp Web?

WhatsApp Web stays logged in for weeks. On a shared or work computer, anyone who opens the tab can read your chats. Logging out every time works, but then you have to scan the QR code again and again.

WhatsApp Web also includes a basic screen lock in its own privacy settings. It only covers WhatsApp; the method below works the same for WhatsApp and any other site, and adds automatic re-locking, tab camouflage and a log of failed attempts.

Step by step

  1. Install Lock My Profile and create your password.
  2. Open its settings (the gear icon in the popup) and go to Protected sites.
  3. Type web.whatsapp.com and click Protect site.
  4. Under Ask again after, choose how long WhatsApp stays open once unlocked, from 5 minutes to 4 hours.
  5. Keep Lock when switching tabs on: as soon as you go to another tab, WhatsApp locks again.
A protected site asking for the password
A protected site asks for the password before showing anything.

Hide that WhatsApp is even open

Turn on Camouflage protected tabs and choose Other site (real address). When you leave the WhatsApp tab, it’s swapped for a harmless page such as Wikipedia, and the address bar shows that site’s real address. Your WhatsApp tab waits in a minimized window; a small password bar on the page, or Ctrl+Shift+U, brings it back.

A camouflaged tab with the password bar
The camouflaged tab shows another site, with the password bar at the bottom right.

Think someone already read your chats?

  • Open the Log in Lock My Profile to see failed password attempts with date and time.
  • On your phone, open WhatsApp › Linked devices and log out of any computer you don’t recognise.
Lock My ProfileFree browser extension: lock your profile and the sites you choose with one password.
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More guides

ChromeHow to password protect ChromeChrome has no password of its own. Here are the two ways to add one, and which to pick.WhatsApp WebHow to lock WhatsApp Web with a passwordKeep your chats private on a shared computer without logging out every time.ProfilesHow to lock a Chrome profilePut a password on one profile so the people you share the computer with can’t open it.