QR Code Generator

A QR code is worth printing when it replaces typing. Reaching your shop on WhatsApp without saving a number, paying an exact amount without keying it in, saving your contact details in one tap — those save real effort. A code that simply repeats the phone number printed next to it does not.

This generator produces five kinds of code. A WhatsApp code opens a direct chat with your number, optionally with a message like "Hi" already filled in, so a customer reaches you without adding you to their contacts first. A UPI code can carry a fixed amount, which removes the most common payment error at a counter. A website code opens any link. A text code shows a plain message. A contact code saves your name, number and details straight into the customer's phone.

Output is a print-ready A4 poster as well as the plain code, so a shop or CSC centre can print and display it immediately rather than pasting a small image into a document and hoping the scale survives.

Making a working code takes about a minute — most of which should go into checking it.

Step 1: Pick the code type
WhatsApp, UPI, Website, Text or Contact. The type decides what happens when a customer scans, so choose based on the action you want, not the information you have.

Step 2: Fill in the details
For WhatsApp, enter your number with country code and optionally a prefilled message. For UPI, enter your UPI ID and, if you want, a fixed amount. For Website, paste the full link including https://. For Contact, fill the name and number fields you want saved.

Step 3: Generate and preview
The code appears immediately. For a UPI or WhatsApp code, check the number character by character — a wrong digit produces a perfectly valid code that reaches the wrong person.

Step 4: Download
Take the plain code for use inside a design, or the A4 poster for immediate printing and display.

Step 5: Test before printing in bulk
Print one copy at the size you actually intend to use, and scan it with two or three different phones, at the distance customers will stand, in the light the code will actually live in. Codes that scan perfectly on a desk sometimes fail on a wall.

Always generate larger than you need and scale down for print. Enlarging a small QR image blurs the module edges, and those edges are exactly what the scanner reads.

Respect the quiet zone. The white margin around the code is part of the code — designs that crop right to its edge break it.

Size it for the scanning distance. A rough rule is that the code needs to be about a tenth of the distance it will be scanned from: around 2 cm on a visiting card, considerably larger than most people expect on a shop board.

Keep contrast high. Dark code on a plain light background. Codes printed over photographs or in light colours are the most common failure after size.

Point it at something stable. A printed code cannot be edited — if the destination changes, you reprint everything. Use a number or link you will keep.

Always label it. "Scan for WhatsApp" or "Scan to pay" measurably increases how often a code is used, and many people will not scan an unlabelled code at all. Keep important information printed in plain text alongside the code, not only inside it.