Is my phone number or message sent to a server?

No. The QR code is generated entirely in your browser using a client-side library. The number and message never leave your device.

What happens when someone scans the code?

Their phone camera detects the WhatsApp link and offers to open it in the WhatsApp app or web, with the chat open and any message already typed in. They still have to tap send.

Do I need to include the country code?

Yes, WhatsApp click-to-chat links require the full number in international format. Pick a country code from the dropdown, or type the full number starting with + if you already know it.

Does the recipient need to save my number first?

No. Click-to-chat links work even if the scanning person has never saved the number, as long as WhatsApp is installed or they use WhatsApp Web.

Is the prefilled message required?

No, it is optional. Leave it blank to open an empty chat, or add text so the visitor only has to tap send.

What error correction level should I pick?

Medium works for most prints. Choose High if the code will be small, printed on a rough surface, or might get partially covered by a logo.

WhatsApp QR Code Generator

Name: WhatsApp QR Code Generator
Availability: InStock
Author: Nham Vu

Enter a WhatsApp number and an optional message, then get a QR code that opens a chat when scanned.

WhatsApp Chat Details

Country code

WhatsApp number

If the number already starts with +, the country code above is ignored.

Prefilled message (optional)

Error correction

QR code size

Enter a WhatsApp number to generate the QR code

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Summary

Enter a WhatsApp number and an optional message, then get a QR code that opens a chat when scanned.

How it works

Choose a country code, or enter a number that already starts with +.
Type the WhatsApp number.
Optionally add a message to prefill in the chat.
Pick an error correction level and QR code size.
The QR code updates automatically as you type.
Scan it with a phone camera to open the chat, or download the PNG.

Use cases

Add a "chat with us" QR code to a business card or storefront window.
Let restaurant customers start an order chat by scanning a table tent.
Print a support QR code on a receipt or product insert.
Share a booking or inquiry link on a flyer without typing the number.
Put a scan-to-chat code on packaging for customer questions.
Embed a WhatsApp QR code in a slide deck or PDF for quick contact.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu