WhatsApp QR code generator

What a WhatsApp QR code is

It is a QR code containing a WhatsApp link. Scanning it opens the WhatsApp app — or WhatsApp Web, on a computer — on a conversation with one specific phone number. The visitor does not have to type the number, and, more importantly, does not have to save it as a contact first.

That last point is the reason this type exists. Messaging someone new normally means: read the number, save a contact, open WhatsApp, find the contact, start a chat. Each step loses people, and the saving step loses the most, because it feels like a commitment. A QR code collapses all five steps into pointing a camera.

It is not a WhatsApp feature that has to be switched on, and it does not need a business account. It is just a link, encoded in a picture, that WhatsApp recognises and opens.

What the link actually contains

A WhatsApp QR code is not a special payload like a Wi-Fi code. It contains an ordinary web address on WhatsApp's wa.me domain, with the phone number in the path:

https://wa.me/15550109999

Add a pre-filled message and it becomes a query parameter:

https://wa.me/15550109999?text=Hi%2C%20I%27d%20like%20a%20quote

Because it is a normal https link, anything that can open a URL can handle it: the phone's camera app, Google Lens, a scanner app, a desktop browser. That is a deliberate choice over the alternative, WhatsApp's own whatsapp:// scheme, which looks more direct but fails silently on any device without the app installed — a desktop, a tablet, a phone where WhatsApp was never installed. The https form always resolves to something.

The number format is the whole game

Almost every WhatsApp code that fails is a number-formatting mistake, and it is worth understanding exactly why. The wa.me link takes the number as a run of digits in full international form, with:

• No plus sign. +1 555 010 9999 becomes 15550109999. The plus is how you write an international number on paper; the link does not want it.
• No spaces, dashes or brackets. The punctuation people naturally type is not part of the number.
• The country code included. A number written for local dialling cannot work, because WhatsApp has no idea which country the scanner is in.

So this:

+1 (555) 010-9999

becomes this:

https://wa.me/15550109999

You do not have to strip the punctuation yourself. The generator accepts a number the way a human writes it — spaces, dashes, brackets, a plus sign at the start — and normalises it. It is strict about one thing on purpose: a plus sign anywhere other than the start is treated as a typo rather than quietly removed, because 1555+0109999 is a mistake and stripping it would encode a link that reaches nobody.

The number is also length-checked: at least seven digits and no more than fifteen, which is the E.164 maximum. A number shorter than that is usually a local number missing its country code — the single most common error with this type.

One warning worth taking seriously: a wrong digit usually does not fail. If it happens to be a number that exists on WhatsApp, the link opens a chat with a stranger. Scan your own finished code and check the conversation that opens before you print a thousand of them.

Pre-filling a message

The optional message is written into the code as the text parameter, URL-encoded. That encoding is not cosmetic. A message is free text, and free text contains characters that mean something in a URL:

The practical benefit is that your message can be more than one line. A multi-line draft — a greeting, a request, a signature — arrives intact because the line breaks are encoded rather than stripped. The generator does the encoding for you, so the only thing to decide is what to say.

Keep it short and specific. The message is a head start, not a form. "Hi, I'd like to book a table for Friday" gets sent; a paragraph of terms and conditions gets deleted.

It opens a draft, it does not send

This is the most common misunderstanding about WhatsApp codes, and it is worth stating plainly: the pre-filled message is a draft in the message box. The sender still has to press send.

That is a limitation of the platform rather than of the code, and it is the right behaviour. A QR code should not be able to send a message from someone's phone without them agreeing to it — that is the pattern phishing relies on. So a WhatsApp code can put the words in their mouth, but not press the button.

In practice this changes nothing for a genuine enquiry, and it is worth knowing before you promise a client that "one scan sends you a message". It does not.

What a desktop visitor sees

If someone scans a WhatsApp code with a phone, the app opens and they land in the conversation. If they open the link on a computer — from an email, a document, or a web page — the browser goes to a WhatsApp page that offers to continue in WhatsApp Web or the desktop app, and to download the app if it is not installed.

This is exactly why the link uses https://wa.me rather than whatsapp://. Both work on a phone with WhatsApp installed, but only the https form does anything sensible anywhere else. A custom-scheme link on a desktop is usually a dead end with no explanation.

Groups and channels are a different link

This type opens a conversation with a person. If what you actually want is a group join link or a channel, that is a different address entirely — chat.whatsapp.com, with its own invite code — and it is not a phone number, so this form cannot produce it. Make that code with the website link type instead, pasting the invite URL directly.

Worth knowing because group invite links can be revoked and regenerated from inside WhatsApp, while a printed WhatsApp number cannot be changed without reprinting. If the destination is likely to change, a dynamic code pointing at a page you control gives you the same one-code-many-destinations flexibility.

Printing and placing it

A WhatsApp code is usually scanned from close range, by someone who is already looking at the thing it is printed on — a price tag, a menu, a delivery van, a receipt, a shop window. That means it can be small, and that its placement matters more than its size.

Put it where the decision happens. On a product, next to the price. On the van door, where someone stuck in traffic behind you can read it. At the bottom of an invoice, where the customer is already holding the paper. A code on a wall that nobody stops in front of will not be scanned, however well it is printed.

Label it. "WhatsApp us" above the code does more for scan rates than any amount of size, because the visitor needs to know the code opens a chat before they point a camera at it. And give it a reason: "Order on WhatsApp" outperforms a bare code every time, because it answers the question the visitor is actually asking.

The usual print rules still apply — dark modules on a light background, the clear margin left intact, matte rather than glossy material so a reflection cannot blind the camera — and the size calculator will work out a minimum size for the distance you expect. For a code read at arm's length, most of these are easy to satisfy.

When not to print one

There is one real caution with WhatsApp codes, and it is about the number rather than the code.

A published WhatsApp number can be messaged by anyone who scans it, and it cannot be unpublished. A code on a poster in a public place is an open invitation, and the number behind it will collect messages from people who are not customers. A personal mobile number on a shop window is the wrong choice; a separate business number is the right one. If you do not have a second number, many businesses use a second SIM or a WhatsApp Business number for exactly this reason.

The other cases are mostly mismatches of intent:

• When you want them to visit a page instead. A WhatsApp code opens a chat, not a website. If the goal is a menu, a booking form or a catalogue, use a URL code — and note that a WhatsApp chat gives you no analytics at all, because nothing is requested when the code is scanned.
• When you need a written record. WhatsApp is fine for enquiries, but an order, a booking or a complaint that must be traceable belongs in a system with a reference number.
• When the visitor may not use WhatsApp. In some markets it is universal; in others, a phone number or an email address reaches more people. If you are unsure, print the number as text alongside the code so the code is an accelerator rather than the only route.

For the case it is built for — a customer who wants to ask a question right now — nothing is faster, because it removes the step where they would have given up.

Make one in the generator

The generator has a WhatsApp type with a live preview: enter the number, optionally add a message, and it builds the wa.me link, strips the punctuation from the number, and encodes the message. Download it as PNG or SVG. Codes are free, carry no watermark and never expire.

Open the WhatsApp QR code generator

Tip: before printing, scan your own code with a phone that does not have your number saved, and check that the conversation which opens is the one you expect. A number with one wrong digit usually reaches a real person rather than failing.

Frequently asked questions