UPI and Wi-Fi QR code generator

How a UPI QR code works

A UPI QR code is just a link in the form upi://pay followed by details. When a payment app scans it, the app opens a payment screen with those details filled in. The code holds no money and no bank login, only the payee's address and optional extras.

• pa: the payee address, your UPI ID such as name@bank. Required.
• pn: the payee name shown to the payer. Required in practice.
• am: the amount in rupees, with up to two decimals. Leave it out and the payer types the amount.
• cu: the currency, always INR.
• tn: a short note that appears with the payment.

Spaces and symbols in the name and note are percent-encoded, so Sample Store becomes Sample%20Store. The page shows the exact text next to the QR so you can check it.

How phones join Wi-Fi from a QR code

A Wi-Fi QR code holds text like WIFI:T:WPA;S:NetworkName;P:password;;. T is the security type, S the network name and P the password. H:true marks a hidden network.

On most recent iPhones, pointing the Camera app at the code offers to join the network. On many Android phones the camera or Google Lens does the same. Support depends on the phone and its version, so try it with a guest device first.

Private by design

The QR code is drawn inside this page from what you type. Nothing is uploaded, stored or logged, and the page cannot make network requests, so it keeps working offline once loaded. A Wi-Fi password or UPI ID never leaves your device.

Questions