QR Code Generator

Turn text, a link or contact details into a downloadable QR code.

Overview

Generates high-resolution, downloadable QR codes for website URLs, plain text, WiFi logins, UPI payments, and vCards with instant PNG/SVG export.

Formula & Calculation Method

QR_Matrix = Encode_Reed_Solomon(Payload_Text, Error_Correction_Level_L_M_Q_H)

Encodes alphanumeric data into 2D barcode matrices with built-in Reed-Solomon error correction to withstand up to 30% physical damage.

Worked Example: Generating UPI Payment QR Code

Inputs: Type = UPI Payment | Payee VPA = 'calciverse@upi' | Payee Name = 'Calciverse' | Amount = ₹500

  • Format UPI URI string: 'upi://pay?pa=calciverse@upi&pn=Calciverse&am=500&cu=INR'
  • Encode data with Error Correction Level M (15% redundancy).
  • Render clean SVG/PNG QR barcode matrix with position detection markers.

Summary: QR Code Generated | Error Correction: Level M | Compatible with all Banking & Camera Apps

Common Use Cases

  • Restaurant Menus & Tables: Create instant touchless table QR codes linking to online digital food menus.
  • Retail UPI Payments: Generate print-ready counter payment QR codes for GPay, PhonePe, and Paytm.
  • WiFi Network Sharing: Allow guests to connect to office or home WiFi networks automatically without typing passwords.

Frequently Asked Questions

Do QR codes generated on Calciverse expire?

No. These are static QR codes; the encoded data is permanently baked into the barcode pattern and will work forever.

What is QR code Error Correction?

A mathematical algorithm (Reed-Solomon) that embeds redundant data packets, allowing damaged or partially covered QR codes to be read.

How do I format a WiFi QR code?

The format is: WIFI:T:WPA;S:MyNetworkName;P:MyPassword;; which smartphone cameras detect automatically.

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