What is a QR code?
A QR (Quick Response) code is a square pattern of black and white modules that stores a link or text. A phone camera reads it in about a second and opens the link — no typing, no app needed. The three big squares in the corners tell the camera where the code starts, and built-in error correction means the code still scans even if part of it is scratched or dirty.
How to create a QR code
- Decide what the code should open — a website, a WhatsApp number, a payment link or plain text.
- Enter it in our free QR Code Generator and click Generate.
- Download the PNG and test it: scan it with two different phones before you print it.
- Print it at a good size and with high contrast (black on white scans best).
QR codes for payments in Pakistan
QR payments are growing fast in Pakistan. JazzCash and Easypaisa both let shopkeepers print a QR code that customers scan to pay — the customer never needs to type an account number. If you run a shop, ask your JazzCash or Easypaisa agent for your merchant QR code, print it clearly at the counter, and test it with a small payment first. For personal use, you can also make a QR code of your own payment link or phone number.
Printing tips
- Size: at least 2 × 2 cm on a visiting card, 3 × 3 cm or larger on a poster. The further away people scan from, the bigger it must be.
- Contrast: black on white is best. Avoid light colours, busy photos behind the code, or inverted (white on black) codes.
- Quiet zone: leave a white border of at least four modules around the code.
- Material: matt paper scans better than glossy paper in bright light.
QR codes for business
Small businesses use QR codes for menus (scan to see the menu), visiting cards (scan to save the number), product packaging (scan for a video or manual), Wi-Fi (scan to join without typing the password) and feedback (scan to open a Google review form). One printed code can replace a long web address that nobody would ever type.
Static vs dynamic QR codes
There are two kinds of QR codes, and the difference matters. A static QR code stores the link or text directly inside the pattern — it is free, it never expires, and nobody can change where it points. Our generator makes static codes. A dynamic QR code stores a short redirect link instead, so the destination can be changed later and scans can be counted — but dynamic codes are a paid service, and if you stop paying, the code stops working. For a visiting card, a shop counter or a printed menu, a static code is the right choice: it costs nothing and it works forever. Choose a dynamic code only when you need to change the destination often, for example a poster campaign where the offer changes every month. Whichever kind you use, always test-scan the printed code with two different phones before you print a hundred copies — a code that does not scan is worse than no code at all.
Common mistakes
- Printing without test-scanning first.
- Making the code too small or too low-contrast to scan.
- Putting a very long link in the code, which makes it dense and hard to scan.
- Linking to a page that later changes — the old code keeps pointing at the old address.
- Using a QR code from an untrusted source — never scan a code that promises free money or asks you to log in to your bank.