Somewhere between the tenth enquiry of the morning and the evening rush, every Indian business owner discovers that a phone keyboard is the bottleneck. WhatsApp Web moves the same chats to a computer screen: full keyboard, copy-paste for catalogues and price lists, and the shop or office work happening beside the conversations instead of around them.
This guide covers how WhatsApp Web works with both WhatsApp and the WhatsApp Business app, logging in and staying logged in, what works in the browser and what stays on the phone, the team ceiling that growing operations hit, and the security habits that keep a business number safe.
How WhatsApp Web actually works
WhatsApp Web (web.whatsapp.com) is an official WhatsApp client that runs in the browser. It joins your account through linked devices: the phone remains the primary device, and the browser becomes a companion that sends and receives as your number.
Since multi-device arrived, the browser session keeps working even when the phone is offline or out of balance. One account supports up to four companion devices, in any mix of browsers and the Windows and macOS desktop apps.
The regular app and the WhatsApp Business app behave identically on the web. A Business number shows the same chats in the browser, plus part of the business toolkit.
Logging in (and staying logged in)
Tick "Keep me signed in" only on a machine you control. On the shared desktop at the counter or a cyber-cafe machine, leave it unticked and log out when done: anyone at that screen can message customers as your business.
- 1
Open web.whatsapp.com
On the computer, open web.whatsapp.com in any modern browser. A QR code appears.
- 2
Open Linked devices on the phone
In WhatsApp or WhatsApp Business: three-dot menu (Android) or Settings (iPhone), then Linked devices, then Link a device.
- 3
Scan the code
Point the phone camera at the QR on the screen. Chats load within seconds.
- 4
No camera? Use the number option
Choose "Link with phone number" on the web page, enter your number with the +91 country code, and type the one-time code WhatsApp shows into the phone.
Related: WhatsApp QR codes and linked devices
The Business app in the browser: works vs phone-only
For a shop that lives on quick replies and labels, the browser carries the daily load comfortably. The setup work stays a phone job.
- Works on the web: sending and receiving, quick replies (type / in the composer), labels on chats, viewing the catalogue and sharing items from it, media, voice notes, groups.
- Phone-only: editing the business profile, greeting and away messages, catalogue editing, creating broadcast lists, and account settings including two-step verification.
- Reports: the Business app keeps its basic message statistics on the phone; the browser adds none of its own.
The four-device ceiling, and what it does to a growing team
One person on WhatsApp Web is a productivity story. Three staff answering one number is where the cracks show, and Indian operations hit this early because the business number IS the storefront:
- No accountability: every linked session sees every chat, but nothing records which staff member replied or who owns which order.
- No assignment: an enquiry cannot be routed to the colleague handling that area or that product; coordination happens by shouting across the room.
- No automation from the browser: no auto-replies, no scheduled messages. Greeting and away messages are set on the phone and end there.
- Four companions maximum: the fifth staff member has no seat, and rotating devices logs people out mid-conversation.
- Fragile sessions: a companion left offline too long unlinks itself, and some office networks block web.whatsapp.com.
Security: sessions are keys to the business
With account-takeover scams rampant on Indian numbers, treat WhatsApp Web sessions with the same care as the cash drawer:
- Scan login QR codes only on web.whatsapp.com or the official desktop app, opened by you. Anyone who sends you a QR and asks you to scan it "for verification" or "to claim an offer" is attempting a takeover.
- Review Linked devices weekly and log out anything unfamiliar.
- Log out of shared computers, every time.
- Switch on two-step verification: with SIM-swap fraud in circulation, the PIN is what stops someone who briefly controls your SMS from re-registering your number.
When the counter outgrows WhatsApp Web
The pattern is the same in a D2C brand, a coaching institute or a property brokerage: WhatsApp Web works until the day several people must answer one number with order. Then the missing pieces are always these: who owns this chat, what was already promised, why did the 6pm enquiry go unanswered, and how do we reply at night without handing the business phone around.
That is the slot Spun fills. It connects to your existing number through the same linked-devices mechanism as WhatsApp Web, one QR scan, history and groups included. Every teammate then gets their own login to one shared inbox: assignment, labels, full history, AI-drafted replies and summaries, voice-note transcription, scheduled messages and after-hours auto-replies. Pricing is flat, from Rs 1,999 per month with unlimited team members, so adding staff costs nothing extra.