What Is a QR Code?
A QR code (Quick Response code) is a two-dimensional matrix barcode that stores data — URLs, text, contact details, WiFi configuration, or payment information — in a pattern of black squares on a white background. Unlike traditional barcodes that encode data in one direction, QR codes store it in a grid and can be scanned from any angle, making them far more versatile.
How to Use This QR Code Generator
Type or paste your content into the text field — a website URL, a line of text, or any data you want to encode. Choose the size and error correction level, then click Generate. Your QR code appears instantly, and you can download it as a PNG image to use on menus, business cards, product packaging, or anywhere else.
Error Correction Levels Explained
QR codes include built-in error correction that allows them to be read even when partially damaged or obscured. The four levels — Low (7%), Medium (15%), Quartile (25%), and High (30%) — let you balance between data capacity and resilience. For most purposes, Medium (M) is the best choice: it provides enough redundancy to withstand scratches or logos without wasting too much capacity.
Common Uses for QR Codes
- Website links — direct customers to your site without typing a URL
- Restaurant menus — contactless menu access at the table
- WiFi sharing — encode SSID and password so guests scan to connect
- Business cards — encode vCard data for instant contact saving
- Payment links — UPI or payment page QR codes for quick checkout
- Event tickets — encode ticket IDs for verification at entry
Tips for Reliable Scanning
Keep good contrast — dark code on a light background, never the reverse. Leave a clear margin (quiet zone) around the code equal to at least 10% of its width. Avoid distorting or stretching the code. Test-print and scan before mass-producing anything.